List of canals in Oregon
From Wikipedia, the free encyclopedia
List of canals in Oregon contains all canals identified by the USGS in the U.S. state of Oregon. The USGS defines a canal as a manmade waterway used by watercraft or for drainage, irrigation, mining, or water power (ditch, lateral).[1]
There are 661 listed as of December 4, 2008.
| name | county | elevation | coordinate | USGS Map | GNIS ID |
|---|---|---|---|---|---|
| A Canal | Klamath | 4,127 ft (1,258 m) | 42°10′31″N 121°42′01″W | Altamont | 1116746 |
| A Canal | Klamath | 4,150 ft (1,260 m) | 42°38′49″N 122°00′34″W | Mares Egg Spring | 1155306 |
| A Drain | Malheur | 2,155 ft (657 m) | 44°02′05″N 117°00′39″W | Malheur Butte | 1131829 |
| A Line Canal | Umatilla | 561 ft (171 m) | 45°49′34″N 119°16′43″W | Hermiston | 1116747 |
| Ady Canal | Klamath | 4,098 ft (1,249 m) | 42°01′59″N 121°50′37″W | Worden | 1161246 |
| Albany Santiam Canal | Linn | 259 ft (79 m) | 44°36′04″N 123°01′34″W | Tangent | 1116798 |
| Alder Slope Ditch | Wallowa | 4,354 ft (1,327 m) | 45°23′29″N 117°19′22″W | Enterprise | 1137094 |
| Allen Canyon Ditch | Wallowa | 5,604 ft (1,708 m) | 45°26′35″N 117°28′08″W | Lostine | 1137700 |
| Allen Ditch | Malheur | 2,959 ft (902 m) | 43°43′58″N 118°04′37″W | Juntura | 1116878 |
| Allen Ditch | Lake | 5,279 ft (1,609 m) | 42°25′40″N 120°05′49″W | Drake Peak NE | 1131109 |
| Allen Drain | Malheur | 2,211 ft (674 m) | 43°41′30″N 117°01′51″W | Adrian | 1116879 |
| Altnow Ditch | Harney | 3,658 ft (1,115 m) | 43°52′55″N 118°18′04″W | Cottonwood Reservoir | 1154208 |
| Amazon Creek Diversion Channel | Lane | 381 ft (116 m) | 44°04′32″N 123°13′45″W | Eugene West | 1116907 |
| Anawalt Drain | Malheur | 4,295 ft (1,309 m) | 43°01′58″N 117°19′36″W | Cow Lakes | 1116922 |
| Anderson Ditch | Malheur | 3,799 ft (1,158 m) | 42°42′45″N 117°48′49″W | Anderson Reservoir | 1130447 |
| Annex Canal | Malheur | 2,106 ft (642 m) | 44°13′46″N 116°58′44″W | Weiser South | 1116961 |
| Antelope Feeder Canal | Malheur | 4,370 ft (1,330 m) | 42°58′26″N 117°09′30″W | Antelope Reservoir | 1116974 |
| Arnold Canal | Deschutes | 3,917 ft (1,194 m) | 43°59′29″N 121°21′24″W | Lava Butte | 1137298 |
| Arritola Ditch | Malheur | 4,747 ft (1,447 m) | 42°43′14″N 117°05′54″W | Juniper Point | 1130441 |
| Ashcraft Flume | Lake | 4,892 ft (1,491 m) | 42°05′56″N 120°33′10″W | Fitzwater Point | 1137317 |
| Ashland Lateral | Jackson | 3,816 ft (1,163 m) | 42°09′43″N 122°30′40″W | Emigrant Lake | 1137320 |
| Ausmus Canal | Harney | 4,104 ft (1,251 m) | 43°24′25″N 118°51′06″W | Lawen | 1117095 |
| B Canal | Klamath | 4,127 ft (1,258 m) | 42°10′35″N 121°39′45″W | Altamont | 1117115 |
| B Canal | Klamath | 4,144 ft (1,263 m) | 42°37′14″N 121°59′59″W | Agency Lake | 1154981 |
| Bagley Ditch | Lake | 4,344 ft (1,324 m) | 42°38′25″N 120°30′59″W | Paisley | 1137404 |
| Baker Municipal Aqueduct | Baker | 4,485 ft (1,367 m) | 44°46′03″N 117°53′43″W | Wingville | 1164072 |
| Baldock Ditch | Baker | 3,422 ft (1,043 m) | 44°47′16″N 117°48′43″W | Baker City | 1164074 |
| Baldwin Ditch | Crook | 2,949 ft (899 m) | 44°14′46″N 120°52′24″W | Stearns Butte | 1153708 |
| Baldwin Ditch | Lake | 4,859 ft (1,481 m) | 42°11′35″N 120°28′29″W | Lakeview Airport | 1153747 |
| Baltimore Ditch | Josephine | 1,496 ft (456 m) | 42°13′29″N 123°15′33″W | Williams | 1137493 |
| Banks Ditch | Baker | 2,638 ft (804 m) | 44°34′18″N 117°27′43″W | Durkee | 1117223 |
| Basche Ditch | Baker | 2,762 ft (842 m) | 44°52′52″N 117°38′32″W | Keating NW | 1117286 |
| Beers Ditch | Malheur | 3,281 ft (1,000 m) | 44°21′05″N 117°38′49″W | Cow Valley East | 1131896 |
| Bend Feed Canal | Deschutes | 3,491 ft (1,064 m) | 44°05′31″N 121°19′39″W | Bend | 1153111 |
| Big Bend Ditch | Wallowa | 4,150 ft (1,260 m) | 45°21′57″N 117°11′43″W | Joseph | 1137974 |
| Big Creek Ditch | Union | 3,635 ft (1,108 m) | 44°57′46″N 117°36′44″W | Sawtooth Ridge | 1117608 |
| Big Flat Ditch | Baker | 3,944 ft (1,202 m) | 44°32′18″N 118°10′30″W | Unity Reservoir | 1138029 |
| Big Red S Canal | Harney | 4,117 ft (1,255 m) | 43°26′50″N 118°58′14″W | Redess | 1132013 |
| Biggs Ditch | Malheur | 2,339 ft (713 m) | 43°56′25″N 117°24′59″W | Vines Hill | 1129747 |
| Birch Creek Ditch | Malheur | 3,770 ft (1,150 m) | 44°23′45″N 117°41′49″W | Bridgeport | 1131888 |
| Bishop Ditch | Malheur | 2,507 ft (764 m) | 43°33′00″N 117°05′49″W | Graveyard Point | 1130425 |
| Black Willow Siphon | Malheur | 2,520 ft (770 m) | 43°41′45″N 117°10′49″W | Owyhee Dam | 1131226 |
| Blanton Drain | Malheur | 2,182 ft (665 m) | 44°00′30″N 117°02′44″W | Malheur Butte | 1131831 |
| Blodgett Ditch | Josephine | 1,680 ft (510 m) | 42°15′24″N 123°17′04″W | Murphy | 1155194 |
| Blue Mountain Ditch | Grant | 2,802 ft (854 m) | 44°24′23″N 119°12′10″W | Wolfinger Butte | 1152793 |
| Blue Springs Ditch | Klamath | 4,176 ft (1,273 m) | 42°41′24″N 122°02′52″W | Mares Egg Spring | 1134812 |
| Blume Zilkey Ditch | Baker | 3,583 ft (1,092 m) | 44°57′49″N 118°02′03″W | Rock Creek | 1117875 |
| Boston Drain | Malheur | 2,303 ft (702 m) | 43°55′55″N 117°19′14″W | Vale West | 1129748 |
| Bowlus Ditch | Umatilla | 1,470 ft (450 m) | 45°53′49″N 118°17′54″W | Bowlus Hill | 1638731 |
| Bridge Creek Canal | Harney | 4,173 ft (1,272 m) | 42°51′50″N 118°52′19″W | Page Springs | 1118071 |
| Bridgepoint Ditch | Jackson | 1,201 ft (366 m) | 42°16′39″N 123°13′18″W | Applegate | 1135262 |
| Brogan Ditch | Malheur | 2,562 ft (781 m) | 44°13′03″N 117°28′06″W | Jamieson | 1118097 |
| Brooks Ditch | Baker | 4,856 ft (1,480 m) | 44°56′26″N 117°14′07″W | Jimtown | 1138656 |
| Brosman Ditch | Malheur | 2,162 ft (659 m) | 44°02′21″N 117°01′43″W | Malheur Butte | 1118114 |
| Brown Loennig Ditch | Baker | 3,586 ft (1,093 m) | 44°54′20″N 118°01′23″W | Rock Creek | 1118129 |
| Brownell Ditch | Umatilla | 331 ft (101 m) | 45°55′14″N 119°18′42″W | Umatilla | 1118131 |
| Browns Feed Canal | Harney | 4,134 ft (1,260 m) | 43°10′14″N 118°16′44″W | South Fork Reservoir | 1132020 |
| Brownsville Ditch | Linn | 371 ft (113 m) | 44°23′26″N 122°57′01″W | Brownsville | 1118141 |
| Buchanan Ditch | Baker | 6,581 ft (2,006 m) | 45°02′16″N 117°04′06″W | Deadman Point | 1133858 |
| Buena Vista Canal | Harney | 4,131 ft (1,259 m) | 43°06′13″N 118°53′58″W | Jackass Butte | 1118258 |
| Bulger Ditch | Baker | 3,953 ft (1,205 m) | 44°57′53″N 118°03′02″W | Rock Creek | 1118265 |
| Bull Ditch | Harney | 4,108 ft (1,252 m) | 43°15′15″N 118°51′34″W | Malheur Lake West | 1132011 |
| Bullock Drain | Malheur | 2,251 ft (686 m) | 43°41′58″N 117°04′29″W | Adrian | 1118299 |
| Bully Creek Siphon | Malheur | 2,415 ft (736 m) | 43°59′42″N 117°21′57″W | Vale West | 1118302 |
| Busse Canal | Harney | 4,121 ft (1,256 m) | 43°11′55″N 118°50′55″W | Jackass Butte NE | 1118373 |
| Butte Ditch | Harney | 4,108 ft (1,252 m) | 43°15′15″N 118°53′24″W | The Narrows | 1132028 |
| Butte Drain | Malheur | 2,195 ft (669 m) | 44°00′45″N 117°06′14″W | Malheur Butte | 1131832 |
| Byron Ditch | Grant | 4,760 ft (1,450 m) | 44°09′25″N 118°51′34″W | Big Canyon | 1129509 |
| C Canal | Klamath | 4,091 ft (1,247 m) | 42°07′20″N 121°42′47″W | Lost River | 1118430 |
| C Canal | Klamath | 4,144 ft (1,263 m) | 42°37′09″N 121°59′34″W | Agency Lake | 1154982 |
| C-G Cutoff | Klamath | 4,091 ft (1,247 m) | 42°08′50″N 121°41′20″W | Altamont | 1118432 |
| Cables Ditch | Harney | 3,438 ft (1,048 m) | 43°26′30″N 118°14′04″W | McEwen Butte | 1131824 |
| Caledonia Canal | Klamath | 4,147 ft (1,264 m) | 42°17′11″N 121°55′37″W | Howard Bay | 1161299 |
| Camp Creek Ditch | Baker | 3,750 ft (1,140 m) | 44°29′10″N 118°05′09″W | Hereford | 1131458 |
| Carnes Ditch | Union | 3,825 ft (1,166 m) | 45°01′35″N 118°01′55″W | Tucker Flat | 1139382 |
| Cascade Canal | Klamath | 5,732 ft (1,747 m) | 42°25′04″N 122°14′07″W | Lake of the Woods North | 1139413 |
| Catherine Creek Highline Canal | Union | 2,779 ft (847 m) | 45°14′59″N 117°51′06″W | Union | 1130901 |
| Cavin Ditch | Baker | 4,265 ft (1,300 m) | 44°25′27″N 118°15′04″W | Rail Gulch | 1153973 |
| Center Canal | Harney | 4,144 ft (1,263 m) | 43°02′30″N 118°50′37″W | Diamond Swamp | 1118778 |
| Center Canal | Klamath | 4,098 ft (1,249 m) | 42°03′18″N 121°48′27″W | Worden | 1161308 |
| Central Alkali Drain | Canyon (ID) | 2,205 ft (672 m) | 43°44′13″N 117°01′57″W | Adrian | 371956 |
| Central Alkali Drain | Malheur | 2,205 ft (672 m) | 43°44′15″N 117°02′10″W | Adrian | 1118779 |
| Central Canal | Klamath | 4,147 ft (1,264 m) | 42°38′14″N 122°01′06″W | Mares Egg Spring | 1135755 |
| Central Lateral | Hood River | 1,545 ft (471 m) | 45°35′54″N 121°32′17″W | Parkdale | 1139544 |
| Central Oregon Canal | Deschutes | 3,366 ft (1,026 m) | 44°04′04″N 121°02′02″W | Alfalfa | 1139545 |
| Chambeam Ditch | Baker | 2,717 ft (828 m) | 44°34′54″N 117°30′32″W | Lost Basin | 1116727 |
| Chamberlin Ditch | Wallowa | 2,976 ft (907 m) | 45°34′12″N 117°34′06″W | Wallowa | 1116572 |
| Chance Lateral | Malheur | 2,382 ft (726 m) | 43°42′32″N 117°01′38″W | Adrian | 1118812 |
| China Creek Ditch | Baker | 4,101 ft (1,250 m) | 44°33′16″N 118°10′34″W | Unity Reservoir | 1139671 |
| China Ditch | Gilliam | 292 ft (89 m) | 45°43′11″N 120°12′09″W | Arlington | 1118906 |
| China Ditch | Jackson | 1,850 ft (560 m) | 42°10′50″N 123°01′10″W | Ruch | 1139674 |
| Clarks Creek Ditch | Baker | 3,635 ft (1,108 m) | 44°29′15″N 117°48′56″W | Wendt Butte | 1118977 |
| Clear Creek Ditch | Wasco | 3,228 ft (984 m) | 45°08′17″N 121°35′49″W | Post Point | 1139795 |
| Clear Water Ditch | Wallowa | 3,094 ft (943 m) | 45°32′44″N 117°31′13″W | Wallowa | 1139809 |
| Clearwater Canal Number 2 | Douglas | 3,225 ft (983 m) | 43°14′54″N 122°22′29″W | Garwood Butte | 1134857 |
| Cleary Ditch | Baker | 3,566 ft (1,087 m) | 44°30′03″N 117°57′18″W | Brannan Gulch | 1119008 |
| Cleary Ditch | Baker | 5,289 ft (1,612 m) | 44°36′41″N 118°00′04″W | Hereford | 1131457 |
| Clement Ditch | Baker | 3,556 ft (1,084 m) | 44°29′53″N 117°51′05″W | Wendt Butte | 1119012 |
| Cleveland Ditch | Harney | 4,108 ft (1,252 m) | 43°59′40″N 118°41′30″W | Van | 1160907 |
| Cloverdale Ditch | Deschutes | 3,104 ft (946 m) | 44°18′00″N 121°27′55″W | Henkle Butte | 1139857 |
| Coates Drain | Malheur | 2,402 ft (732 m) | 43°37′11″N 117°02′05″W | Graveyard Point | 1119061 |
| Coker Butte Lateral | Jackson | 1,283 ft (391 m) | 42°23′54″N 122°52′50″W | Sams Valley | 1134760 |
| Cole Ditch | Malheur | 2,730 ft (830 m) | 44°15′43″N 117°32′43″W | Becker Creek | 1119130 |
| Colt Ware Ditch | Baker | 3,691 ft (1,125 m) | 44°29′36″N 118°07′41″W | Unity | 1153975 |
| Columbia Southern Canal | Deschutes | 3,481 ft (1,061 m) | 44°08′19″N 121°23′21″W | Tumalo Dam | 1140015 |
| Conn Ditch | Lake | 4,482 ft (1,366 m) | 42°41′50″N 120°34′14″W | Paisley | 1153796 |
| Consolidated Ditch | Wallowa | 4,485 ft (1,367 m) | 45°20′32″N 117°16′58″W | Chief Joseph Mountain | 1140048 |
| Cook Ditch | Baker | 3,697 ft (1,127 m) | 44°30′00″N 118°07′20″W | Beaverdam Creek | 1153974 |
| Corbell Ditch | Klamath | 4,265 ft (1,300 m) | 42°34′34″N 121°41′34″W | S'Ocholis Canyon | 1154826 |
| Cornstock Ditch | Jackson | 1,568 ft (478 m) | 42°09′34″N 123°02′59″W | Ruch | 1155053 |
| Corral Ditch | Baker | 3,405 ft (1,038 m) | 44°47′46″N 117°48′24″W | Baker City | 1164082 |
| Correll Ditch | Baker | 3,465 ft (1,056 m) | 44°46′30″N 117°51′22″W | Baker City | 1164083 |
| Cory Ditch | Harney | 4,101 ft (1,250 m) | 43°25′00″N 118°30′39″W | Crane | 1132056 |
| Coughanour Ditch | Union | 3,632 ft (1,107 m) | 45°01′39″N 118°00′46″W | Tucker Flat | 1140251 |
| Courtney Ditch | Umatilla | 574 ft (175 m) | 45°46′36″N 119°15′50″W | Hermiston | 1119401 |
| Coye Ditch | Wallowa | 4,272 ft (1,302 m) | 45°20′34″N 117°14′17″W | Joseph | 1140304 |
| Coyote Drain | Malheur | 2,146 ft (654 m) | 44°09′50″N 116°55′44″W | Weiser South | 1129769 |
| Coyote Gulch Siphon | Malheur | 2,461 ft (750 m) | 43°38′00″N 117°05′24″W | Adrian | 1131223 |
| Cram Ditch | Jefferson | 1,844 ft (562 m) | 44°47′58″N 120°55′53″W | Willowdale | 1119504 |
| Cranston Ditch | Baker | 2,700 ft (820 m) | 44°51′59″N 117°35′00″W | Keating | 1158185 |
| Crater Canal | Jackson | 1,348 ft (411 m) | 42°28′59″N 122°47′49″W | Eagle Point | 1135368 |
| Crater Creek Ditch | Deschutes | 6,850 ft (2,090 m) | 44°02′50″N 121°40′25″W | Broken Top | 1140395 |
| Cross Country Ditch | Wallowa | 3,323 ft (1,013 m) | 45°29′39″N 117°25′09″W | Lostine | 1140478 |
| Crump Ditch | Lake | 4,590 ft (1,400 m) | 42°11′00″N 119°53′29″W | Adel | 1131216 |
| Crutcher Ditch | Malheur | 3,796 ft (1,157 m) | 42°43′00″N 117°48′56″W | Anderson Reservoir | 1130446 |
| Cummings Ditch | Grant | 2,477 ft (755 m) | 44°26′55″N 119°32′04″W | Dayville | 1153770 |
| Curop Ditch | Baker | 3,970 ft (1,210 m) | 44°28′35″N 118°12′19″W | Unity | 1153981 |
| Curtis Ditch | Lake | 4,308 ft (1,313 m) | 42°30′45″N 120°18′24″W | Coglan Buttes SE | 1131004 |
| D Canal | Klamath | 4,075 ft (1,242 m) | 42°02′00″N 121°26′51″W | Malin | 1119652 |
| Danforth Ditch | Harney | 4,462 ft (1,360 m) | 43°39′35″N 118°54′19″W | Devine Ridge South | 1154187 |
| Danley Creek Canal | Jackson | 4,701 ft (1,433 m) | 42°17′54″N 122°21′24″W | Brown Mountain | 1116642 |
| Day Drainage Ditch | Lincoln | 23 ft (7.0 m) | 44°26′59″N 124°02′12″W | Waldport | 1135272 |
| Dead Ox Canal | Malheur | 2,123 ft (647 m) | 44°07′19″N 116°55′45″W | Payette | 1119746 |
| Dee Flat Ditch | Hood River | 1,322 ft (403 m) | 45°33′37″N 121°40′08″W | Dee | 1140781 |
| Diamond Canal | Harney | 4,153 ft (1,266 m) | 43°02′14″N 118°44′25″W | Diamond | 1119921 |
| Diamond Drain | Harney | 4,144 ft (1,263 m) | 43°03′58″N 118°47′54″W | Diamond Swamp | 1119923 |
| Dillon Ditch | Umatilla | 561 ft (171 m) | 45°47′16″N 119°16′15″W | Hermiston | 1119941 |
| Dobbin Ditch | Union | 2,785 ft (849 m) | 45°21′29″N 118°04′08″W | La Grande | 1164089 |
| Domby Ditch | Malheur | 2,110 ft (640 m) | 44°16′00″N 117°06′19″W | Porters Flat | 1158635 |
| Dork Canal | Malheur | 2,172 ft (662 m) | 44°01′00″N 117°02′17″W | Malheur Butte | 1158213 |
| Dorothy Ditch | Umatilla | 1,371 ft (418 m) | 45°53′44″N 118°18′24″W | Bowlus Hill | 1638732 |
| Drescher Ditch | Marion | 151 ft (46 m) | 45°07′04″N 122°45′29″W | Silverton | 1130466 |
| Drewsey Reclamation Company Ditch | Harney | 3,576 ft (1,090 m) | 43°49′29″N 118°26′07″W | Drewsey | 1120082 |
| Dry Gulch Ditch | Baker | 2,779 ft (847 m) | 44°48′49″N 117°12′41″W | Richland | 1141337 |
| Dufur Ditch | Wasco | 1,398 ft (426 m) | 45°26′32″N 121°09′05″W | Dufur West | 1130114 |
| Duncan Ditch | Baker | 2,762 ft (842 m) | 44°53′48″N 117°39′44″W | Keating NW | 1120209 |
| Duncan Ditch | Malheur | 3,819 ft (1,164 m) | 44°18′50″N 117°57′14″W | Ironside | 1131939 |
| E Canal | Klamath | 4,121 ft (1,256 m) | 42°11′44″N 121°35′58″W | Dairy | 1120252 |
| Eagle Point Irrigation Canal | Jackson | 2,274 ft (693 m) | 42°33′42″N 122°39′28″W | Obenchain Mountain | 1141486 |
| East Canal | Klamath | 4,163 ft (1,269 m) | 42°12′00″N 121°19′39″W | Lorella | 1133076 |
| East Canal | Lake | 4,797 ft (1,462 m) | 42°06′40″N 120°31′32″W | Fitzwater Point | 1141513 |
| East Fork Main Canal | Hood River | 1,657 ft (505 m) | 45°33′32″N 121°33′07″W | Parkdale | 1141581 |
| East Grain Camp Canal | Harney | 4,147 ft (1,264 m) | 43°01′51″N 118°49′40″W | Diamond Swamp | 1120334 |
| East Lateral | Jackson | 2,051 ft (625 m) | 42°15′18″N 122°44′33″W | Rio Canyon | 1141625 |
| East Lateral | Klamath | 4,183 ft (1,275 m) | 42°06′25″N 121°12′31″W | Langell Valley | 1158222 |
| East Malone Lateral | Klamath | 4,160 ft (1,270 m) | 42°01′07″N 121°13′08″W | Langell Valley | 1120342 |
| East Side Canal | Harney | 4,209 ft (1,283 m) | 42°49′29″N 118°51′43″W | Page Springs | 1116729 |
| East Side Ditch | Malheur | 2,621 ft (799 m) | 44°15′12″N 117°30′23″W | Becker Creek | 1133928 |
| Easterday Ditch | Malheur | 4,462 ft (1,360 m) | 43°30′45″N 118°00′19″W | Mosquito Mountain | 1129744 |
| Echave Ditch | Malheur | 4,895 ft (1,492 m) | 42°13′35″N 117°53′54″W | Oregon Canyon Ranch | 1134242 |
| Eddington Ditch | Grant | 2,690 ft (820 m) | 44°25′40″N 119°15′19″W | Shop Gulch | 1153717 |
| Elder Ditch | Klamath | 4,344 ft (1,324 m) | 42°27′10″N 121°06′44″W | Bly | 1155311 |
| Eldorado Ditch | Baker | 5,082 ft (1,549 m) | 44°23′03″N 118°20′55″W | Rail Gulch | 1141723 |
| Elliot Ditch | Baker | 3,422 ft (1,043 m) | 44°29′44″N 117°47′00″W | Wendt Butte | 1120483 |
| Ellis Ditch | Union | 3,392 ft (1,034 m) | 44°59′59″N 117°59′40″W | Haines | 1120486 |
| Elmer Ditch | Union | 3,583 ft (1,092 m) | 45°13′17″N 117°45′44″W | Union | 1158682 |
| Elms Ditch | Baker | 4,124 ft (1,257 m) | 44°25′53″N 118°13′42″W | Unity | 1141841 |
| Emele Ditch | Baker | 2,789 ft (850 m) | 44°54′37″N 117°39′05″W | Keating NW | 1120491 |
| Enterprise Ditch | Grant | 2,894 ft (882 m) | 44°24′52″N 119°04′13″W | Mount Vernon | 1152796 |
| Erickson Ditch | Wheeler | 4,314 ft (1,315 m) | 44°27′00″N 119°47′19″W | Antone | 1158618 |
| Erwin Ditch | Baker | 2,756 ft (840 m) | 44°54′14″N 117°39′04″W | Keating NW | 1158225 |
| Estes Ditch | Baker | 3,363 ft (1,025 m) | 44°50′13″N 117°51′37″W | Baker City | 1164091 |
| Eugene Water & Electric Board Canal | Lane | 735 ft (224 m) | 44°06′45″N 122°39′16″W | Leaburg | 1120531 |
| Evans Creek Lateral | Jackson | 1,132 ft (345 m) | 42°25′46″N 123°11′34″W | Rogue River | 1135238 |
| Ewing Ditch | Morrow | 584 ft (178 m) | 45°38′44″N 119°57′19″W | Dalreed Butte | 1129824 |
| F Canal | Klamath | 4,114 ft (1,254 m) | 42°07′50″N 121°31′16″W | Dairy | 1120549 |
| F-1 Lateral | Klamath | 4,859 ft (1,481 m) | 42°09′00″N 121°34′49″W | Dairy | 1132677 |
| Farmers Ditch | Baker | 4,111 ft (1,253 m) | 44°41′05″N 118°06′19″W | Phillips Lake | 1120635 |
| Farmers Ditch | Malheur | 2,342 ft (714 m) | 43°56′50″N 117°21′15″W | Vale West | 1120636 |
| Farmers Ditch | Hood River | 850 ft (260 m) | 45°39′18″N 121°34′18″W | Hood River | 1142024 |
| Farmers Ditch | Wallowa | 4,213 ft (1,284 m) | 45°21′32″N 117°10′04″W | Joseph | 1142025 |
| Feed Canal | Umatilla | 636 ft (194 m) | 45°49′30″N 119°16′12″W | Hermiston | 1120657 |
| Feed Canal | Harney | 4,199 ft (1,280 m) | 43°08′00″N 118°37′59″W | Barton Lake | 1129720 |
| Fish Creek Canal | Douglas | 3,035 ft (925 m) | 43°14′29″N 122°27′01″W | Fish Creek Desert | 1134856 |
| Fister Ditch | Harney | 3,848 ft (1,173 m) | 43°20′45″N 118°25′39″W | Circle Bar | 1131825 |
| Fitzgerald Ditches | Lake | 5,321 ft (1,622 m) | 42°29′10″N 120°04′29″W | Drake Peak NE | 1131107 |
| Five and Seventenths Canal | Owyhee (ID) | 2,477 ft (755 m) | 43°38′19″N 117°02′34″W | Adrian | 372712 |
| Five and Seventenths Canal | Malheur | 2,526 ft (770 m) | 43°37′19″N 117°04′03″W | Graveyard Point | 1120798 |
| Foothill Ditch | Baker | 2,858 ft (871 m) | 44°53′10″N 117°08′54″W | Jimtown | 1153068 |
| Ford Ingram Ditch | Baker | 5,403 ft (1,647 m) | 44°53′40″N 118°05′47″W | Rock Creek | 1120877 |
| Fort Creek Ditch | Klamath | 4,147 ft (1,264 m) | 42°38′39″N 121°57′14″W | Fort Klamath | 1154978 |
| Fourmile Canal | Klamath | 4,147 ft (1,264 m) | 42°36′29″N 122°03′18″W | Crystal Spring | 1167675 |
| Frazier Creek Ditch | Benton | 213 ft (65 m) | 44°37′16″N 123°13′11″W | Riverside | 1120962 |
| Frederick Lateral | Jackson | 2,146 ft (654 m) | 42°13′22″N 122°46′57″W | Talent | 1142435 |
| Frog Creek Ditch | Wasco | 3,422 ft (1,043 m) | 45°10′06″N 121°38′29″W | Wapinitia Pass | 1121006 |
| Furnish Ditch | Umatilla | 682 ft (208 m) | 45°46′37″N 119°10′54″W | Stanfield | 1158253 |
| G Canal | Klamath | 4,091 ft (1,247 m) | 42°05′54″N 121°40′05″W | Lost River | 1121027 |
| G-Three Canal | Klamath | 4,085 ft (1,245 m) | 42°02′20″N 121°33′26″W | Merrill | 1121029 |
| Gardner Mill Race Ditch | Baker | 3,573 ft (1,089 m) | 44°59′39″N 118°03′04″W | Rock Creek | 1121061 |
| Gekeler Ditch | Union | 2,717 ft (828 m) | 45°19′13″N 118°01′33″W | La Grande | 1164094 |
| Gellerman Canal | Malheur | 2,277 ft (694 m) | 44°00′57″N 117°15′23″W | Willowcreek | 1166655 |
| Gerwick Ditch | Klamath | 4,518 ft (1,377 m) | 42°45′49″N 121°48′14″W | Fuego | 1154990 |
| Gibson Drain | Malheur | 2,244 ft (684 m) | 43°41′23″N 117°04′53″W | Adrian | 1121122 |
| Gill Ditch | Crook | 4,554 ft (1,388 m) | 44°22′04″N 120°11′26″W | Williams Prairie | 1157544 |
| Glacier Ditch | Hood River | 2,674 ft (815 m) | 45°27′59″N 121°35′36″W | Dog River | 1153202 |
| Gold Hill Irrigation District Canal | Jackson | 1,066 ft (325 m) | 42°25′34″N 123°06′19″W | Gold Hill | 1135237 |
| Golden Gate Canal | Malheur | 2,329 ft (710 m) | 43°42′51″N 117°01′52″W | Adrian | 1121220 |
| Goulden Canal | Harney | 4,108 ft (1,252 m) | 43°15′33″N 119°14′54″W | Northwest Harney Lake | 1133761 |
| Grande Ronde Ditch | Union | 2,717 ft (828 m) | 45°18′14″N 118°01′40″W | La Grande | 1164096 |
| Granger Ditch | Wallowa | 3,963 ft (1,208 m) | 45°23′13″N 117°14′11″W | Joseph NW | 1142910 |
| Gray Lateral | Lake | 4,770 ft (1,450 m) | 42°10′42″N 120°26′04″W | Lakeview Airport | 1153749 |
| Greener Ditch | Baker | 6,345 ft (1,934 m) | 45°02′17″N 117°03′40″W | Deadman Point | 1133854 |
| Grout Ditch | Union | 3,461 ft (1,055 m) | 45°08′27″N 117°58′46″W | Craig Mountain | 1130906 |
| H V I Company Ditch | Harney | 4,144 ft (1,263 m) | 43°37′40″N 118°44′56″W | Buchanan | 1154186 |
| Hall Ditch | Wheeler | 3,428 ft (1,045 m) | 44°32′19″N 120°08′39″W | Mitchell | 1157460 |
| Halliday Drain | Malheur | 2,182 ft (665 m) | 44°00′55″N 117°01′14″W | Malheur Butte | 1131830 |
| Hammel Lateral | Jackson | 1,614 ft (492 m) | 42°32′59″N 122°46′23″W | Shady Cove | 1121541 |
| Hanley North Canal | Jackson | 2,116 ft (645 m) | 42°25′26″N 122°33′27″W | Lakecreek | 1116588 |
| Hanley South Canal | Jackson | 2,090 ft (640 m) | 42°24′31″N 122°34′11″W | Lakecreek | 1116589 |
| Happy Valley Ditch | Malheur | 3,383 ft (1,031 m) | 42°50′32″N 117°37′54″W | Rome | 1143295 |
| Harper Southside Canal | Malheur | 2,507 ft (764 m) | 43°51′35″N 117°35′44″W | Harper | 1131817 |
| Hawley Ditch | Baker | 4,245 ft (1,294 m) | 44°43′01″N 118°09′00″W | Sumpter | 1143386 |
| Hendrix Siphon | Malheur | 2,444 ft (745 m) | 44°00′48″N 117°23′49″W | Hope Butte | 1121756 |
| Hereford Ditch | Baker | 3,665 ft (1,117 m) | 44°30′12″N 118°03′34″W | Beaverdam Creek | 1131456 |
| Hermiston Ditch | Umatilla | 443 ft (135 m) | 45°51′01″N 119°16′35″W | Hermiston | 1121772 |
| High Line Canal | Klamath | 4,117 ft (1,255 m) | 42°02′14″N 121°23′47″W | Malin | 1121804 |
| High Line Canal | Umatilla | 620 ft (190 m) | 45°46′33″N 119°22′20″W | Hermiston | 1121805 |
| High Line Ditch | Klamath | 4,219 ft (1,286 m) | 42°07′49″N 121°19′55″W | Lorella | 1121806 |
| High Line Ditch | Malheur | 2,861 ft (872 m) | 44°13′27″N 117°32′01″W | Brogan | 1121807 |
| High Line Ditch | Lake | 4,833 ft (1,473 m) | 42°25′40″N 120°15′19″W | Valley Falls | 1131007 |
| High Line Ditch | Baker | 3,747 ft (1,142 m) | 44°30′00″N 118°08′22″W | Unity Reservoir | 1153983 |
| Highberger Ditch | Marion | 364 ft (111 m) | 44°50′24″N 122°51′59″W | Stayton | 1130397 |
| Highland Ditch | Wasco | 2,028 ft (618 m) | 45°15′11″N 121°19′13″W | Friend | 1143587 |
| Highline Canal | Josephine | 1,030 ft (310 m) | 42°25′27″N 123°16′58″W | Grants Pass | 1143590 |
| Highline Ditch | Wasco | 1,161 ft (354 m) | 45°15′17″N 121°08′46″W | Postage Stamp Butte | 1121825 |
| Highline Ditch | Harney | 4,213 ft (1,284 m) | 43°07′20″N 118°40′39″W | Diamond | 1129719 |
| Highline Lateral | Hood River | 1,093 ft (333 m) | 45°37′06″N 121°33′45″W | Parkdale | 1136971 |
| Hobbs Ditch | Klamath | 4,511 ft (1,375 m) | 42°45′44″N 121°49′44″W | Fuego | 1154989 |
| Hoffman Ditch | Crook | 2,976 ft (907 m) | 44°10′29″N 120°50′44″W | Stearns Butte | 1130935 |
| Holloway Ditch | Harney | 4,770 ft (1,450 m) | 42°05′55″N 118°26′57″W | Windy Point | 1157740 |
| Holly Drain | Malheur | 2,244 ft (684 m) | 43°42′09″N 117°04′02″W | Adrian | 1121922 |
| Hope Ditch | Malheur | 2,244 ft (684 m) | 44°00′25″N 117°13′57″W | Henry Gulch | 1133398 |
| Hope Drain | Malheur | 2,234 ft (681 m) | 43°59′58″N 117°12′22″W | Vale East | 1121975 |
| Hopkins Canal | Jackson | 1,332 ft (406 m) | 42°20′49″N 122°54′09″W | Medford West | 1121978 |
| Hotchkiss Ditch | Lake | 4,823 ft (1,470 m) | 42°17′00″N 120°24′09″W | Big Baldy | 1158693 |
| Howard Prairie Canal | Jackson | 4,521 ft (1,378 m) | 42°09′14″N 122°22′29″W | Little Chinquapin Mountain | 1160748 |
| Howell Ditch | Baker | 2,254 ft (687 m) | 44°46′15″N 117°11′34″W | Richland | 1158582 |
| Hubble Ditch | Malheur | 3,471 ft (1,058 m) | 42°51′21″N 117°43′35″W | Rome | 1122095 |
| Hudson Bay Canal | Umatilla | 820 ft (250 m) | 45°58′22″N 118°26′40″W | Milton-Freewater | 1122102 |
| Huff Ditch | Baker | 5,361 ft (1,634 m) | 45°01′00″N 117°01′11″W | Deadman Point | 1133859 |
| Hunt Ditch | Umatilla | 630 ft (190 m) | 45°44′26″N 119°16′37″W | Service Buttes | 1122141 |
| Hunter Ditch | Malheur | 4,229 ft (1,289 m) | 44°01′31″N 118°06′57″W | Hunter Mountain | 1637912 |
| Hurricane Ditch | Wallowa | 4,144 ft (1,263 m) | 45°21′50″N 117°16′36″W | Chief Joseph Mountain | 1143960 |
| Hutchinson Ditch | Baker | 3,691 ft (1,125 m) | 44°59′08″N 118°02′56″W | Rock Creek | 1122173 |
| I Canal | Umatilla | 499 ft (152 m) | 45°49′59″N 119°18′59″W | Hermiston | 1129829 |
| I N Young Ditch | Baker | 2,290 ft (700 m) | 44°47′20″N 117°11′04″W | Richland | 1158580 |
| Imbler Drain | Malheur | 2,224 ft (678 m) | 43°43′56″N 117°01′50″W | Adrian | 1122190 |
| Independence Creek Ditch | Baker | 3,914 ft (1,193 m) | 44°29′15″N 117°57′49″W | Devils Heel | 1131954 |
| Island Ditch | Wallowa | 3,875 ft (1,181 m) | 45°23′55″N 117°15′32″W | Enterprise | 1144133 |
| J Canal | Klamath | 4,045 ft (1,233 m) | 42°00′15″N 121°27′21″W | Malin | 1122308 |
| J-1 Canal | Klamath | 4,052 ft (1,235 m) | 42°00′13″N 121°32′31″W | Merrill | 1122314 |
| J-H Canal | Malheur | 2,323 ft (708 m) | 43°54′15″N 117°18′08″W | Vale West | 1122313 |
| Jacobsen Ditch | Baker | 3,268 ft (996 m) | 44°58′12″N 117°52′49″W | Haines | 1122369 |
| Jefferson Ditch | Marion | 256 ft (78 m) | 44°42′38″N 122°59′21″W | Crabtree | 1156648 |
| Jerome Prairie Lateral | Josephine | 1,050 ft (320 m) | 42°23′16″N 123°24′24″W | Wilderville | 1135423 |
| Johnson Ditch | Harney | 3,842 ft (1,171 m) | 43°54′25″N 118°34′24″W | Moffit Table | 1163977 |
| Jones Canal | Lake | 4,311 ft (1,314 m) | 42°39′51″N 120°30′40″W | Paisley | 1144373 |
| Jones Ditch | Marion | 157 ft (48 m) | 45°03′09″N 122°55′27″W | Gervais | 1122511 |
| Jonesboro Canal | Malheur | 2,821 ft (860 m) | 43°47′45″N 117°56′04″W | Jonesboro | 1131800 |
| Jordan Drain | Malheur | 2,195 ft (669 m) | 43°59′47″N 117°05′56″W | Cairo | 1122530 |
| Juntura Investment Company Canal | Malheur | 3,081 ft (939 m) | 43°45′45″N 118°07′04″W | Stemler Ridge | 1131763 |
| Kanehinke Ditch | Malheur | 3,881 ft (1,183 m) | 42°40′51″N 117°53′41″W | Flat Top Mountain | 1130449 |
| Kelly Lateral | Wasco | 2,064 ft (629 m) | 45°07′23″N 121°15′01″W | Maupin SW | 1153132 |
| Kelsey Wilson Ditch | Baker | 3,383 ft (1,031 m) | 44°59′00″N 117°56′10″W | Haines | 1122679 |
| Kennedy Ditch | Baker | 3,169 ft (966 m) | 44°59′15″N 117°38′49″W | Keating NW | 1122683 |
| Keno Canal | Klamath | 4,127 ft (1,258 m) | 42°13′37″N 121°47′52″W | Klamath Falls | 1135524 |
| Kerby Ditch | Josephine | 1,276 ft (389 m) | 42°10′33″N 123°39′31″W | Cave Junction | 1144565 |
| King Drain | Malheur | 2,218 ft (676 m) | 43°59′08″N 117°09′25″W | Vale East | 1122749 |
| Kingman Drain | Malheur | 2,215 ft (675 m) | 43°45′58″N 117°03′33″W | Owyhee | 1122759 |
| Kingman Lateral | Malheur | 2,526 ft (770 m) | 43°43′51″N 117°08′42″W | Owyhee Dam | 1122760 |
| Kittredge Canal | Klamath | 4,524 ft (1,379 m) | 42°56′59″N 121°36′59″W | Wildhorse Ridge | 1155000 |
| Klamath Strait | Klamath | 4,098 ft (1,249 m) | 42°04′43″N 121°49′49″W | Worden | 1161407 |
| Klamath Strait Drain | Klamath | 4,091 ft (1,247 m) | 42°01′57″N 121°47′25″W | Worden | 226642 |
| Krumbo Canal | Harney | 4,160 ft (1,270 m) | 42°58′46″N 118°51′03″W | Krumbo Reservoir | 1122846 |
| Kueny Ditch | Harney | 4,098 ft (1,249 m) | 42°27′01″N 118°36′40″W | Andrews | 1122856 |
| L Canal | Umatilla | 492 ft (150 m) | 45°51′49″N 119°12′34″W | Stanfield | 1129796 |
| La Grande Aqueduct | Union | 4,383 ft (1,336 m) | 45°13′44″N 118°10′09″W | La Grande Reservoir | 1130988 |
| Lacomb Irrigation Canal | Linn | 915 ft (279 m) | 44°35′29″N 122°39′34″W | Lacomb | 1122882 |
| Ladd Creek Pickup Ditch | Union | 2,697 ft (822 m) | 45°15′37″N 117°57′56″W | Conley | 1122886 |
| Lake Labish Ditch | Marion | 138 ft (42 m) | 45°01′57″N 122°55′54″W | Gervais | 1157945 |
| Lateral 197 | Malheur | 2,395 ft (730 m) | 43°59′12″N 117°21′40″W | Vale West | 1166670 |
| Lateral B | Deschutes | 3,081 ft (939 m) | 44°14′18″N 121°13′18″W | Forked Horn Butte | 1144853 |
| Lateral C | Deschutes | 3,005 ft (916 m) | 44°16′26″N 121°11′59″W | Redmond | 1122971 |
| Lateral E | Deschutes | 3,008 ft (917 m) | 44°17′24″N 121°09′24″W | Redmond | 1129581 |
| Lateral F | Deschutes | 2,802 ft (854 m) | 44°20′20″N 121°11′32″W | Redmond | 1122972 |
| Lateral H | Deschutes | 2,861 ft (872 m) | 44°21′46″N 121°10′30″W | Redmond | 1144854 |
| Lateral J | Deschutes | 2,746 ft (837 m) | 44°20′59″N 121°14′59″W | Redmond | 1129579 |
| Laycock Long Ditch | Grant | 3,005 ft (916 m) | 44°25′24″N 119°01′32″W | Mount Vernon | 1152795 |
| Lebanon Santiam Canal | Linn | 364 ft (111 m) | 44°30′45″N 122°52′42″W | Lebanon | 1123016 |
| Lemolo Canal Number 1 | Douglas | 4,140 ft (1,260 m) | 43°20′19″N 122°12′49″W | Lemolo Lake | 1134866 |
| Lemolo Number 2 Canal | Douglas | 3,278 ft (999 m) | 43°19′24″N 122°20′24″W | Potter Mountain | 1155264 |
| Lemons Ditch | Grant | 2,825 ft (861 m) | 44°24′55″N 119°08′04″W | Wolfinger Butte | 1153716 |
| Lenz Lateral | Umatilla | 673 ft (205 m) | 45°49′52″N 119°08′15″W | Stanfield | 1123044 |
| Lewis Ditch | Wheeler | 3,642 ft (1,110 m) | 44°31′14″N 120°19′14″W | Lawson Mountain | 1153832 |
| Lillard Ditch | Baker | 3,373 ft (1,028 m) | 44°55′20″N 117°51′25″W | Magpie Peak | 1145006 |
| Little Butte Creek Siphon | Jackson | 1,378 ft (420 m) | 42°28′36″N 122°44′59″W | Brownsboro | 1123145 |
| Little Valley Lateral | Malheur | 2,589 ft (789 m) | 43°52′37″N 117°29′07″W | Vines Hill | 1123305 |
| Littlefield Ditch | Baker | 4,311 ft (1,314 m) | 44°41′54″N 117°54′19″W | Blue Canyon | 1123322 |
| Locket Gulch Siphon | Malheur | 2,497 ft (761 m) | 43°53′13″N 117°05′49″W | Cairo | 1123334 |
| Lone Pine Ditch | Union | 3,724 ft (1,135 m) | 45°01′35″N 118°04′18″W | Tucker Flat | 1145356 |
| Lorella Drain | Klamath | 4,150 ft (1,260 m) | 42°08′15″N 121°15′30″W | Lorella | 1157069 |
| Lorella Lateral | Klamath | 4,160 ft (1,270 m) | 42°07′50″N 121°15′46″W | Lorella | 1157070 |
| Lost Boulder Ditch | Wasco | 3,133 ft (955 m) | 45°08′57″N 121°28′35″W | Rock Creek Reservoir | 1145494 |
| Lousignont Canal | Washington | 174 ft (53 m) | 45°34′22″N 123°08′29″W | Gales Creek | 1157972 |
| Love Ditch | Baker | 3,445 ft (1,050 m) | 44°45′47″N 117°30′17″W | Keating | 1158335 |
| Love Loney Ditch | Umatilla | 538 ft (164 m) | 45°59′19″N 118°34′54″W | Waterman | 1129686 |
| Low Line Canal | Klamath | 4,094 ft (1,248 m) | 42°01′22″N 121°22′51″W | Malin | 1135809 |
| Low Line Ditch | Klamath | 4,157 ft (1,267 m) | 42°09′24″N 121°20′40″W | Lorella | 1123544 |
| Low Line Ditch | Malheur | 2,713 ft (827 m) | 44°14′03″N 117°31′27″W | Brogan | 1158093 |
| Low Line Ditch | Hood River | 1,391 ft (424 m) | 45°36′38″N 121°38′15″W | Dee | 1158336 |
| Lower Alder Slope Ditch | Wallowa | 3,927 ft (1,197 m) | 45°24′13″N 117°18′41″W | Enterprise | 1123551 |
| Lower Ditch | Malheur | 2,188 ft (667 m) | 44°07′06″N 116°56′54″W | Payette | 1123561 |
| Lower East Lateral | Jackson | 1,706 ft (520 m) | 42°14′13″N 122°44′59″W | Ashland | 1145616 |
| Lower Fisher Long Ditch | Baker | 3,615 ft (1,102 m) | 44°55′20″N 118°01′27″W | Rock Creek | 1123563 |
| Lower Marsh Canal | Lake | 4,288 ft (1,307 m) | 42°34′05″N 120°22′59″W | Tucker Hill | 1153755 |
| Lower Pump Canal | Malheur | 2,241 ft (683 m) | 43°58′47″N 117°09′18″W | Vale East | 1123584 |
| Lower Sevenmile Ditch | Klamath | 4,157 ft (1,267 m) | 42°40′16″N 122°03′24″W | Mares Egg Spring | 1134811 |
| Lower Valley Ditch | Wallowa | 2,864 ft (873 m) | 45°36′33″N 117°33′01″W | Wallowa | 1145643 |
| Luce Ditch | Grant | 3,025 ft (922 m) | 44°25′16″N 118°59′31″W | John Day | 1157835 |
| Luce Ditch | Lake | 4,642 ft (1,415 m) | 42°47′30″N 120°06′34″W | Coleman Hills | 1158716 |
| Lynns Ditch | Malheur | 4,514 ft (1,376 m) | 44°25′15″N 117°50′25″W | Wendt Butte | 1123637 |
| Lynns Ditch | Malheur | 3,993 ft (1,217 m) | 44°25′18″N 117°44′14″W | Bridgeport | 1123638 |
| M Canal | Umatilla | 486 ft (148 m) | 45°52′39″N 119°15′42″W | Umatilla | 1123651 |
| Main Canal | Marion | 371 ft (113 m) | 44°47′37″N 122°52′55″W | Turner | 1166675 |
| Malheur Siphon | Malheur | 2,257 ft (688 m) | 43°58′52″N 117°03′27″W | Cairo | 1123713 |
| Mallett Drain | Malheur | 2,195 ft (669 m) | 43°59′40″N 117°06′58″W | Cairo | 1123717 |
| Mansfield Ditch | Baker | 3,504 ft (1,068 m) | 44°56′56″N 118°01′15″W | Rock Creek | 1123735 |
| Marion Ditch | Marion | 348 ft (106 m) | 44°45′45″N 122°53′51″W | Turner | 1123760 |
| Marquam Dry Lake Canal | Multnomah | 13 ft (4.0 m) | 45°39′54″N 122°48′14″W | Sauvie Island | 1123781 |
| Maxwell Canal | Umatilla | 525 ft (160 m) | 45°49′32″N 119°17′33″W | Hermiston | 1123855 |
| Maxwell Ditch | Baker | 3,501 ft (1,067 m) | 44°55′49″N 118°00′30″W | Rock Creek | 1123856 |
| Maxwell Ditch | Deschutes | 3,402 ft (1,037 m) | 44°14′39″N 121°30′51″W | Three Creek Butte | 1153109 |
| May Park Ditch | Union | 2,756 ft (840 m) | 45°20′25″N 118°03′47″W | La Grande | 1164112 |
| Mayfield Ditch | Klamath | 4,334 ft (1,321 m) | 43°32′09″N 121°38′49″W | Cryder Butte | 1153040 |
| McAlister Ditch | Union | 2,703 ft (824 m) | 45°19′09″N 117°59′04″W | Conley | 1164113 |
| McBride Ditch | Malheur | 2,162 ft (659 m) | 44°16′18″N 117°13′04″W | Olds Ferry | 1130921 |
| McCord Ditch | Baker | 3,425 ft (1,044 m) | 44°47′03″N 117°51′59″W | Baker City | 1164114 |
| McDonald Ditch | Jackson | 4,091 ft (1,247 m) | 42°06′39″N 122°48′44″W | Siskiyou Peak | 1145967 |
| McEwen Valley Ditch | Baker | 4,281 ft (1,305 m) | 44°41′17″N 118°09′07″W | Sumpter | 1145976 |
| McKenzie Ditch | Lane | 436 ft (133 m) | 44°04′24″N 123°02′34″W | Eugene East | 1639025 |
| McKenzie-Greeley Ditch | Malheur | 3,763 ft (1,147 m) | 43°20′17″N 117°05′09″W | Rockville | 1130438 |
| McMullen Ditch | Baker | 2,520 ft (770 m) | 44°51′05″N 117°03′54″W | Posy Valley | 1129555 |
| McPherson Ditch | Baker | 3,455 ft (1,053 m) | 44°29′45″N 117°49′41″W | Wendt Butte | 1124018 |
| Medford Aqueduct | Jackson | 2,513 ft (766 m) | 42°32′56″N 122°36′03″W | Butte Falls | 1146071 |
| Medford Irrigation District Canal | Jackson | 1,640 ft (500 m) | 42°26′59″N 122°43′45″W | Brownsboro | 1146072 |
| Melhase Ditch | Klamath | 4,176 ft (1,273 m) | 42°41′29″N 122°00′19″W | Mares Egg Spring | 1155324 |
| Middle Ditch | Malheur | 2,188 ft (667 m) | 44°09′50″N 116°57′09″W | Weiser South | 1124097 |
| Mill Creek Canal | Wasco | 2,680 ft (820 m) | 44°53′33″N 121°29′26″W | Hehe Butte | 1124167 |
| Mill Creek Lateral | Wasco | 2,838 ft (865 m) | 44°52′21″N 121°30′17″W | Sawmill Butte | 1124170 |
| Mill Ditch | Malheur | 2,234 ft (681 m) | 43°59′36″N 117°12′33″W | Vale East | 1124171 |
| Mill Ditch | Baker | 3,573 ft (1,089 m) | 44°29′22″N 117°51′48″W | Wendt Butte | 1124172 |
| Miller Ditch | Harney | 3,622 ft (1,104 m) | 43°51′02″N 118°27′32″W | Drewsey | 1124195 |
| Miller Ditch | Baker | 3,507 ft (1,069 m) | 44°55′33″N 118°00′37″W | Rock Creek | 1124196 |
| Milton Ditch | Umatilla | 1,083 ft (330 m) | 45°55′30″N 118°23′02″W | Milton-Freewater | 1124224 |
| Mining Channel | Baker | 2,776 ft (846 m) | 44°53′05″N 117°08′14″W | Jimtown | 1153705 |
| Mission Ditch | Marion | 184 ft (56 m) | 44°55′27″N 123°00′49″W | Salem West | 1163153 |
| Mitchell Butte Lateral | Malheur | 2,310 ft (700 m) | 43°49′18″N 117°05′26″W | Owyhee | 1124263 |
| Modoc Point Main Canal | Klamath | 4,163 ft (1,269 m) | 42°32′36″N 121°52′32″W | Chiloquin | 1146383 |
| Moody Ditch | Union | 3,425 ft (1,044 m) | 45°02′44″N 117°58′39″W | North Powder | 1116657 |
| Moonshine Ditch | Wallowa | 4,445 ft (1,355 m) | 45°19′40″N 117°14′12″W | Joseph | 1146430 |
| Moore Pratt Ditch | Baker | 3,323 ft (1,013 m) | 44°56′32″N 117°57′10″W | Haines | 1131473 |
| Morfitt Ditch | Malheur | 3,409 ft (1,039 m) | 44°23′00″N 117°43′34″W | Bridgeport | 1131887 |
| Moroney Canal | Tillamook | 20 ft (6.1 m) | 45°37′44″N 123°56′15″W | Nehalem | 1132399 |
| Moss Ditch | Lake | 4,764 ft (1,452 m) | 42°31′25″N 120°26′39″W | Tucker Hill | 1153754 |
| Mount Hood Canal Hood | Hood River | 1,535 ft (468 m) | 45°32′04″N 121°34′12″W | Parkdale | 1153230 |
| Murphy Ditch | Josephine | 1,033 ft (315 m) | 42°20′44″N 123°21′31″W | Murphy | 1157284 |
| Murray Ditch | Grant | 2,303 ft (702 m) | 44°29′45″N 119°34′49″W | Dayville | 1153771 |
| N Canal | Umatilla | 499 ft (152 m) | 45°51′25″N 119°16′36″W | Hermiston | 1124584 |
| Neal Creek Lateral Hood | Hood River | 961 ft (293 m) | 45°37′24″N 121°29′54″W | Ketchum Reservoir | 1146742 |
| Nelson Ditch | Baker | 3,986 ft (1,215 m) | 44°49′49″N 118°00′30″W | Elkhorn Peak | 1124651 |
| Nesley Ditch | Union | 2,785 ft (849 m) | 45°20′38″N 118°05′12″W | La Grande | 1164119 |
| Nevada Canal | Malheur | 2,208 ft (673 m) | 43°59′16″N 117°06′12″W | Cairo | 1124657 |
| New Berryman Ditch | Jackson | 1,276 ft (389 m) | 42°15′19″N 123°11′44″W | Applegate | 1135266 |
| New Home Ditch | Baker | 3,422 ft (1,043 m) | 44°47′20″N 117°49′00″W | Baker City | 1164120 |
| Newt Young Ditch | Baker | 2,352 ft (717 m) | 44°47′17″N 117°09′52″W | Richland | 1146816 |
| North Alkali Creek Siphon | Malheur | 2,493 ft (760 m) | 43°37′20″N 117°04′29″W | Graveyard Point | 1131221 |
| North Antelope Canal | Malheur | 4,262 ft (1,299 m) | 42°55′50″N 117°15′34″W | Danner | 1130455 |
| North Canal | Malheur | 2,533 ft (772 m) | 43°52′00″N 117°06′40″W | Owyhee | 1124724 |
| North Canal | Klamath | 4,101 ft (1,250 m) | 42°03′40″N 121°45′46″W | Worden | 1124725 |
| North Canal | Klamath | 4,190 ft (1,280 m) | 42°09′05″N 121°16′58″W | Lorella | 1124726 |
| North Canal | Lake | 4,856 ft (1,480 m) | 42°08′00″N 120°33′07″W | Drews Gap | 1146887 |
| North Canal Flume | Lake | 4,839 ft (1,475 m) | 42°11′25″N 120°30′52″W | Drews Gap | 1160988 |
| North Canal Lateral | Malheur | 2,503 ft (763 m) | 43°57′10″N 117°05′25″W | Cairo | 1124728 |
| North Dixie Ditch | Baker | 3,711 ft (1,131 m) | 44°28′25″N 117°29′59″W | Rye Valley | 1131861 |
| North Fork Ditch | Klamath | 4,485 ft (1,367 m) | 42°27′40″N 121°02′54″W | Bly | 1155309 |
| North Oakander Drain | Malheur | 2,264 ft (690 m) | 43°42′09″N 117°03′18″W | Adrian | 1124831 |
| North Side Canal | Malheur | 3,989 ft (1,216 m) | 42°56′44″N 117°30′17″W | Arock | 1124841 |
| North Unit Main Canal | Deschutes | 2,959 ft (902 m) | 44°18′19″N 121°06′39″W | O'Neil | 1147071 |
| Nouque Ditch | Malheur | 4,826 ft (1,471 m) | 42°00′55″N 117°37′39″W | Tenmile Ranch | 1130443 |
| Number One C-Drain | Klamath | 4,098 ft (1,249 m) | 42°11′00″N 121°44′44″W | Altamont | 1134733 |
| Number Six Canal | Lake | 4,846 ft (1,477 m) | 42°09′31″N 120°30′06″W | Drews Gap | 1146850 |
| Nye Ditch | Jackson | 2,441 ft (744 m) | 42°43′24″N 122°32′39″W | Cascade Gorge | 1116718 |
| Nyssa Drain | Malheur | 2,182 ft (665 m) | 43°53′46″N 117°00′32″W | Cairo | 1124872 |
| Nyssa-Arcadia Drain | Malheur | 2,182 ft (665 m) | 43°53′30″N 117°00′16″W | Cairo | 1166863 |
| O Canal | Umatilla | 472 ft (144 m) | 45°54′32″N 119°16′44″W | Umatilla | 1124873 |
| O Pipe | Umatilla | 466 ft (142 m) | 45°53′54″N 119°15′12″W | Umatilla | 1124874 |
| O V L Ditch | Lake | 4,308 ft (1,313 m) | 42°30′45″N 120°18′24″W | Coglan Buttes SE | 1131005 |
| OA Lateral | Umatilla | 463 ft (141 m) | 45°54′02″N 119°16′27″W | Umatilla | 1124875 |
| OB Lateral | Umatilla | 463 ft (141 m) | 45°54′35″N 119°17′19″W | Umatilla | 1124876 |
| Oak Grove Ditch | Hood River | 3,291 ft (1,003 m) | 45°37′06″N 121°42′07″W | Dee | 1147115 |
| Oakander Drain | Malheur | 2,244 ft (684 m) | 43°42′40″N 117°03′51″W | Adrian | 1124920 |
| Ochoco Distribution Canal | Crook | 2,982 ft (909 m) | 44°20′59″N 120°52′09″W | Prineville | 1153122 |
| Ochoco Main Canal | Crook | 3,051 ft (930 m) | 44°19′30″N 120°47′04″W | Prineville | 1147144 |
| Oliver Drain | Malheur | 4,318 ft (1,316 m) | 43°03′54″N 117°18′11″W | Cow Lakes | 1124984 |
| Ontario Nyssa Canal | Malheur | 2,297 ft (700 m) | 43°53′48″N 117°02′15″W | Cairo | 1125004 |
| Orchard Ridge Ditch | Wasco | 2,257 ft (688 m) | 45°23′24″N 121°17′24″W | Wolf Run | 1157088 |
| Ordell Ditch | Union | 2,713 ft (827 m) | 45°23′04″N 118°02′03″W | Summerville | 1147257 |
| Oswego Canal | Clackamas | 105 ft (32 m) | 45°23′37″N 122°43′10″W | Lake Oswego | 1125055 |
| Outside Canal | Lake | 4,314 ft (1,315 m) | 42°40′13″N 120°25′45″W | Coglan Buttes | 1147297 |
| Owens Ditch | Grant | 4,649 ft (1,417 m) | 44°03′15″N 118°58′34″W | Silvies | 1152973 |
| Owyhee Canal | Malheur | 2,372 ft (723 m) | 44°01′04″N 117°12′22″W | Henry Gulch | 1166691 |
| Owyhee Ditch | Malheur | 2,234 ft (681 m) | 43°47′24″N 117°04′59″W | Owyhee | 1125095 |
| Owyhee Siphon | Malheur | 2,333 ft (711 m) | 43°44′10″N 117°10′39″W | Owyhee Dam | 1131225 |
| P P & L Canal | Jackson | 2,628 ft (801 m) | 42°45′04″N 122°30′26″W | Whetstone Point | 1159373 |
| P1 Canal | Siskiyou (CA) | 4,091 ft (1,247 m) | 41°59′06″N 121°38′35″W | Lower Klamath Lake | 267150 |
| Packwood Ditch | Baker | 3,684 ft (1,123 m) | 44°29′40″N 118°05′44″W | Hereford | 1125120 |
| Palmer Ditch | Crook | 3,940 ft (1,200 m) | 44°08′15″N 119°44′44″W | Powell Mountain | 1157567 |
| Panama Ditch | Grant | 2,877 ft (877 m) | 44°25′12″N 119°07′23″W | Mount Vernon | 1152797 |
| Parker Ditch | Malheur | 4,902 ft (1,494 m) | 42°38′48″N 117°03′58″W | Juniper Point | 1131219 |
| Patillo Ditches | Jackson | 1,588 ft (484 m) | 42°36′19″N 122°58′54″W | Boswell Mountain | 1135443 |
| Payton Ditch | Baker | 3,346 ft (1,020 m) | 44°52′08″N 117°54′04″W | Wingville | 1125252 |
| Pearson Ditch | Baker | 3,340 ft (1,020 m) | 45°00′12″N 117°57′54″W | North Powder | 1131532 |
| Pelican Cut Canal | Klamath | 4,147 ft (1,264 m) | 42°27′24″N 122°05′09″W | Pelican Bay | 1135152 |
| Peninsula Drainage Canal | Multnomah | 13 ft (4.0 m) | 45°35′37″N 122°38′25″W | Portland | 1125284 |
| Penstock Olsen Ditch | Baker | 3,996 ft (1,218 m) | 44°55′15″N 118°03′04″W | Rock Creek | 1125294 |
| Peoples Irrigation Company Ditch | Crook | 2,838 ft (865 m) | 44°19′39″N 120°54′37″W | Houston Lake | 1129578 |
| Perkins Ditch | Baker | 2,707 ft (825 m) | 44°49′47″N 117°31′00″W | Keating | 1158416 |
| Perrin Lateral | Marion | 328 ft (100 m) | 44°48′35″N 122°55′24″W | Turner | 1125308 |
| Peters Ditch | Linn | 351 ft (107 m) | 44°41′48″N 122°48′56″W | Scio | 1125317 |
| Pettegrew Lateral | Jackson | 1,526 ft (465 m) | 42°31′04″N 122°47′14″W | Shady Cove | 1125336 |
| Philling-McFadden Ditch | Wheeler | 3,743 ft (1,141 m) | 44°27′30″N 119°48′38″W | Antone | 1157824 |
| Phillips Ditch | Baker | 5,072 ft (1,546 m) | 45°02′00″N 117°28′05″W | Bennet Peak | 1125346 |
| Phillips Ditch | Baker | 3,684 ft (1,123 m) | 44°49′50″N 117°58′44″W | Wingville | 1132506 |
| Phillips Ditch | Baker | 3,140 ft (960 m) | 44°53′12″N 117°28′31″W | Balm Creek Reservoir | 1147638 |
| Phoenix Canal | Jackson | 1,512 ft (461 m) | 42°18′04″N 122°54′16″W | Medford West | 1125349 |
| Pilot Butte Canal | Deschutes | 3,127 ft (953 m) | 44°12′32″N 121°14′02″W | Forked Horn Butte | 1147673 |
| Pilot Butte North Canal | Crook | 2,953 ft (900 m) | 44°23′06″N 121°04′41″W | Gray Butte | 1147675 |
| Pilot Butte South Canal | Crook | 2,894 ft (882 m) | 44°23′01″N 121°03′15″W | Gray Butte | 1147676 |
| Placer Ditch | Grant | 5,938 ft (1,810 m) | 44°43′08″N 118°28′32″W | Greenhorn | 1147787 |
| Plainview Ditch | Deschutes | 3,274 ft (998 m) | 44°13′20″N 121°28′29″W | Tumalo Dam | 1147791 |
| Pleasant View Canal | Umatilla | 971 ft (296 m) | 45°56′38″N 118°24′27″W | Milton-Freewater | 1125487 |
| Plevna Ditch | Klamath | 4,121 ft (1,256 m) | 42°10′15″N 121°50′29″W | Klamath Falls | 1162442 |
| Pole Creek Ditch | Deschutes | 3,898 ft (1,188 m) | 44°14′15″N 121°36′18″W | Three Creek Butte | 1147849 |
| Poley-Allen Ditch | Wallowa | 3,425 ft (1,044 m) | 45°29′03″N 117°26′19″W | Lostine | 1147860 |
| Posy Valley Ditch | Baker | 3,107 ft (947 m) | 44°52′09″N 117°08′19″W | Richland | 1147926 |
| Potter Ditch | Wheeler | 1,785 ft (544 m) | 44°49′20″N 119°44′34″W | Kimberly | 1116527 |
| Poujade Ditch | Harney | 4,144 ft (1,263 m) | 43°37′28″N 118°43′24″W | Carson Point | 1166779 |
| Power Canal | Hood River | 203 ft (62 m) | 45°41′19″N 121°30′40″W | Hood River | 1129666 |
| Powers Ditch | Baker | 3,681 ft (1,122 m) | 44°59′51″N 118°04′38″W | Rock Creek | 1125644 |
| Prescott Ditch | Union | 2,825 ft (861 m) | 45°11′59″N 117°51′39″W | Union | 1129460 |
| Priday Ditch | Lake | 5,243 ft (1,598 m) | 42°26′15″N 120°05′34″W | Drake Peak NE | 1131106 |
| Pump Ditch | Malheur | 2,346 ft (715 m) | 43°58′52″N 117°16′11″W | Vale West | 1125701 |
| Purvis Drain | Malheur | 2,313 ft (705 m) | 43°55′50″N 117°22′04″W | Vale West | 1129752 |
| Q Street Canal | Lane | 443 ft (135 m) | 44°03′39″N 123°02′54″W | Eugene East | 1129647 |
| R Canal | Umatilla | 541 ft (165 m) | 45°52′34″N 119°18′43″W | Umatilla | 1125758 |
| R-3 Pipe | Umatilla | 541 ft (165 m) | 45°52′27″N 119°16′53″W | Hermiston | 1125760 |
| Red Ditch | Jackson | 1,093 ft (333 m) | 42°31′05″N 123°10′16″W | Wimer | 1125876 |
| Red Drain | Malheur | 2,254 ft (687 m) | 43°42′18″N 117°04′27″W | Adrian | 1125877 |
| Red House Ditch | Lake | 4,334 ft (1,321 m) | 42°42′55″N 120°30′39″W | Paisley | 1148310 |
| Reed Ditch | Baker | 3,556 ft (1,084 m) | 44°30′11″N 117°56′42″W | Brannan Gulch | 1125922 |
| Reed Ditch | Deschutes | 3,261 ft (994 m) | 44°15′59″N 121°32′04″W | Sisters | 1153106 |
| Reeds Ditch | Baker | 3,550 ft (1,080 m) | 44°30′00″N 117°56′14″W | Devils Heel | 1131953 |
| Rehart-Salt Creek Ditch | Lake | 4,777 ft (1,456 m) | 42°18′50″N 120°17′59″W | Crooked Creek Valley | 1130997 |
| Rineman Ditch | Harney | 4,104 ft (1,251 m) | 43°15′33″N 118°53′26″W | The Narrows | 1159208 |
| Ringsmeyer Ditch | Grant | 2,303 ft (702 m) | 44°29′02″N 119°33′54″W | Dayville | 1153769 |
| Riverside Canal | Malheur | 2,260 ft (690 m) | 43°42′10″N 117°03′39″W | Adrian | 1126064 |
| Robbins Ditch | Harney | 3,757 ft (1,145 m) | 43°52′43″N 118°35′55″W | Moffit Table | 1148534 |
| Robbins Drain | Malheur | 2,313 ft (705 m) | 43°55′25″N 117°22′04″W | Vale West | 1129751 |
| Robertson Ditch | Union | 3,281 ft (1,000 m) | 45°00′27″N 117°38′54″W | Medical Springs | 1131546 |
| Rock Creek Ditch | Wasco | 1,932 ft (589 m) | 45°11′49″N 121°18′19″W | Wamic | 1153170 |
| Rock Spring Siphon | Malheur | 2,493 ft (760 m) | 43°45′48″N 117°11′37″W | Mitchell Butte | 1126218 |
| Russell Drain | Malheur | 2,277 ft (694 m) | 43°55′10″N 117°17′04″W | Vale West | 1129750 |
| Rutherford Ditch | Malheur | 3,619 ft (1,103 m) | 44°21′04″N 117°52′35″W | Ironside | 1161052 |
| Ryegrass Ditch | Crook | 2,867 ft (874 m) | 44°19′13″N 120°51′46″W | Prineville | 1148882 |
| S Canal | Umatilla | 463 ft (141 m) | 45°53′33″N 119°15′52″W | Umatilla | 1126396 |
| Saint Clair Canal | Harney | 4,108 ft (1,252 m) | 43°16′46″N 119°14′04″W | Northwest Harney Lake | 1133760 |
| Salem Ditch | Marion | 433 ft (132 m) | 44°48′22″N 122°49′14″W | Stayton | 1126505 |
| Sand Creek Canal | Klamath | 4,636 ft (1,413 m) | 42°52′24″N 121°53′29″W | Sun Pass | 1154994 |
| Scott Ditch | Malheur | 3,583 ft (1,092 m) | 42°47′39″N 117°44′53″W | Rome | 1126687 |
| Scott Ditch | Wasco | 3,383 ft (1,031 m) | 45°07′44″N 117°57′46″W | Craig Mountain | 1130904 |
| Scotts Ditch | Malheur | 4,564 ft (1,391 m) | 42°41′25″N 117°19′53″W | Skull Creek | 1157305 |
| Seely Ditch | Clackamas | 144 ft (44 m) | 45°18′59″N 122°47′04″W | Sherwood | 1162796 |
| Segundo Ditch | Malheur | 4,951 ft (1,509 m) | 42°12′00″N 117°53′51″W | Oregon Canyon Ranch | 1133156 |
| Sevenmile Canal | Klamath | 4,144 ft (1,263 m) | 42°34′59″N 121°58′04″W | Agency Lake | 1154302 |
| Sevenmile Ditch | Klamath | 4,183 ft (1,275 m) | 42°41′55″N 122°03′34″W | Mares Egg Spring | 1134810 |
| Sharp Ditch | Malheur | 4,321 ft (1,317 m) | 42°59′20″N 117°09′51″W | Antelope Reservoir | 1130453 |
| Shaw Brant Ditch | Union | 3,514 ft (1,071 m) | 45°04′32″N 117°58′31″W | North Powder | 1149295 |
| Shaw Ditch | Union | 3,412 ft (1,040 m) | 45°00′52″N 117°58′23″W | North Powder | 1149298 |
| Shaw Stewart Ditch | Baker | 3,592 ft (1,095 m) | 44°41′48″N 117°51′23″W | Bowen Valley | 1126807 |
| Sheep Creek Siphon | Malheur | 2,516 ft (767 m) | 43°54′29″N 117°05′01″W | Cairo | 1126821 |
| Sheep L Ditch | Harney | 4,436 ft (1,352 m) | 43°32′55″N 119°45′09″W | Potato Hills | 1129714 |
| Sheep Ridge Ditch | Wallowa | 3,609 ft (1,100 m) | 45°28′16″N 117°24′39″W | Lostine | 1149335 |
| Shelton Ditch | Marion | 184 ft (56 m) | 44°55′33″N 123°00′34″W | Salem West | 1163266 |
| Shoemaker Ditch | Wheeler | 3,514 ft (1,071 m) | 44°31′34″N 120°08′39″W | Mitchell | 1158711 |
| Short Low Ditch | Umatilla | 584 ft (178 m) | 46°00′19″N 118°34′24″W | Lowden | 1157399 |
| Sidney Ditch | Marion | 279 ft (85 m) | 44°44′02″N 122°57′53″W | Crabtree | 1163271 |
| Sidney Power Ditch | Marion | 200 ft (61 m) | 44°46′57″N 123°04′16″W | Sidney | 1126949 |
| Siegle Ditch | Baker | 2,320 ft (710 m) | 44°43′50″N 117°07′54″W | Daly Creek | 1129562 |
| Silver Grange Ditch | Wallowa | 7,447 ft (2,270 m) | 45°22′01″N 117°21′57″W | Chief Joseph Mountain | 1149497 |
| Silver L Canal | Lake | 4,439 ft (1,353 m) | 43°06′20″N 121°03′44″W | Hager Mountain | 1153864 |
| Silver Lake Ditch | Wallowa | 4,255 ft (1,297 m) | 45°21′16″N 117°08′25″W | Joseph | 1149502 |
| Singer Drain | Malheur | 2,201 ft (671 m) | 43°42′43″N 117°04′36″W | Adrian | 1126999 |
| Sitz Ditch | Harney | 3,655 ft (1,114 m) | 43°50′10″N 118°29′04″W | Drewsey | 1160500 |
| Skipanon Waterway | Clatsop | 7 ft (2.1 m) | 46°10′35″N 123°54′38″W | Warrenton | 1127030 |
| Skunk Farm Canal | Harney | 4,140 ft (1,260 m) | 43°05′25″N 118°50′11″W | Diamond Swamp | 1127046 |
| Slide Ditch | Malheur | 2,100 ft (640 m) | 44°14′10″N 117°00′44″W | Moores Hollow | 1131828 |
| Slusher Canal | Umatilla | 738 ft (225 m) | 45°40′54″N 119°05′39″W | Nolin | 1129670 |
| Smith Ditch | Morrow | 4,859 ft (1,481 m) | 45°09′55″N 119°19′22″W | Arbuckle Mountain | 1149752 |
| Smith Ditch | Deschutes | 3,192 ft (973 m) | 44°17′24″N 121°33′04″W | Sisters | 1153105 |
| Smith Ditch | Crook | 3,363 ft (1,025 m) | 44°18′24″N 120°36′24″W | Cadle Butte | 1153127 |
| Smith Ditch | Baker | 3,615 ft (1,102 m) | 44°44′10″N 117°49′45″W | Bowen Valley | 1164135 |
| Smith McPhee Ditch | Baker | 3,330 ft (1,010 m) | 44°59′06″N 117°55′59″W | Haines | 1127128 |
| Snively Siphon | Malheur | 2,339 ft (713 m) | 43°43′00″N 117°10′59″W | Owyhee Dam | 1131224 |
| Snow Creek Ditch | Deschutes | 3,898 ft (1,188 m) | 44°08′34″N 121°29′39″W | Tumalo Dam | 1149814 |
| Sodom Ditch | Linn | 269 ft (82 m) | 44°26′52″N 123°03′22″W | Halsey | 1127194 |
| South Alkali Drain | Malheur | 2,274 ft (693 m) | 43°43′03″N 117°02′25″W | Adrian | 1127227 |
| South Antelope Canal | Malheur | 4,262 ft (1,299 m) | 42°55′04″N 117°17′08″W | Danner | 1130454 |
| South Canal | Owyhee (ID) | 2,493 ft (760 m) | 43°31′42″N 116°57′47″W | Homedale | 375136 |
| South Canal | Malheur | 2,543 ft (775 m) | 43°39′47″N 117°05′51″W | Adrian | 1127236 |
| South Canal | Lake | 4,783 ft (1,458 m) | 42°02′24″N 120°33′00″W | Fitzwater Point | 1149908 |
| South Catherine Ditch | Union | 6,329 ft (1,929 m) | 45°05′44″N 117°30′47″W | Flagstaff Butte | 1127237 |
| South Diamond Canal | Harney | 4,144 ft (1,263 m) | 43°01′38″N 118°47′28″W | Diamond Swamp | 1127248 |
| South Ditch | Umatilla | 548 ft (167 m) | 45°59′50″N 118°38′38″W | Smeltz | 1158495 |
| South Dixie Ditch | Baker | 3,438 ft (1,048 m) | 44°26′35″N 117°28′34″W | Rye Valley | 1131840 |
| South Fork Canal | Jackson | 4,665 ft (1,422 m) | 42°18′29″N 122°22′14″W | Brown Mountain | 1116638 |
| South Highline Canal | Josephine | 1,043 ft (318 m) | 42°24′44″N 123°19′04″W | Grants Pass | 1135235 |
| South Main Canal | Josephine | 961 ft (293 m) | 42°25′04″N 123°19′04″W | Grants Pass | 1135236 |
| South Side Canal | Malheur | 4,029 ft (1,228 m) | 42°52′44″N 117°28′11″W | Threemile Hill | 1150080 |
| Southworth Ditch | Grant | 4,692 ft (1,430 m) | 44°09′20″N 118°57′19″W | Seneca | 1152972 |
| Spence Ditch | Umatilla | 1,260 ft (380 m) | 45°54′09″N 118°20′34″W | Bowlus Hill | 1638733 |
| Spring Creek Ditch | Baker | 3,150 ft (960 m) | 44°50′25″N 117°12′39″W | Richland | 1161770 |
| Springer Ditch | Wasco | 4,485 ft (1,367 m) | 45°21′04″N 121°27′26″W | Flag Point | 1158502 |
| Stacey Ditch | Malheur | 2,336 ft (712 m) | 43°56′50″N 117°24′59″W | Vines Hill | 1129746 |
| Stallard Ditch | Harney | 3,570 ft (1,090 m) | 43°50′35″N 118°18′49″W | Drinkwater Pass | 1160504 |
| Stanfield Branch Furnish Ditch | Umatilla | 653 ft (199 m) | 45°48′08″N 119°10′56″W | Stanfield | 1127526 |
| Stanfield Drain | Umatilla | 623 ft (190 m) | 45°47′19″N 119°10′49″W | Stanfield | 1129797 |
| Star Creek Ditch | Malheur | 4,905 ft (1,495 m) | 43°25′45″N 117°56′51″W | Star Creek Reservoir | 1164027 |
| State Ditch | Union | 2,684 ft (818 m) | 45°23′25″N 117°55′51″W | Imbler | 1150363 |
| Stearns Ditch | Crook | 2,907 ft (886 m) | 44°13′19″N 120°52′29″W | Stearns Butte | 1130932 |
| Sterling Ditch | Jackson | 2,477 ft (755 m) | 42°11′53″N 122°56′49″W | Sterling Creek | 1150410 |
| Steward Ditch | Baker | 3,107 ft (947 m) | 44°52′20″N 117°29′04″W | Glasgow Butte | 1129433 |
| Steward Ditch | Grant | 2,480 ft (760 m) | 44°27′35″N 119°25′34″W | Aldrich Mountain North | 1153956 |
| Stewart Carter Ditch | Malheur | 2,178 ft (664 m) | 44°01′03″N 116°59′30″W | Payette | 1127597 |
| Stewart Ditch | Grant | 2,480 ft (760 m) | 44°27′35″N 119°25′34″W | Aldrich Mountain North | 1161631 |
| Stock Ditch | Lake | 4,308 ft (1,313 m) | 42°39′35″N 120°28′37″W | Coglan Buttes | 1127618 |
| Stockwater Ditch | Harney | 4,550 ft (1,390 m) | 42°24′45″N 118°55′14″W | Garrison Lake | 1129759 |
| Stradley Drain | Malheur | 2,260 ft (690 m) | 43°41′48″N 117°03′52″W | Adrian | 1127646 |
| Strode Ditch | Malheur | 3,862 ft (1,177 m) | 43°18′05″N 117°04′02″W | Rockville | 1130436 |
| Stubblefield Canal | Harney | 4,117 ft (1,255 m) | 43°11′28″N 118°56′36″W | Coyote Buttes | 1127668 |
| Succor Creek Siphon | Malheur | 2,523 ft (769 m) | 43°35′10″N 117°04′24″W | Graveyard Point | 1131220 |
| Summer Lake I D Canal | Lake | 4,275 ft (1,303 m) | 42°56′40″N 120°47′49″W | Summer Lake | 1153851 |
| Sunnyslope Ditch | Union | 3,317 ft (1,011 m) | 45°03′18″N 117°55′26″W | North Powder | 1127736 |
| Swalley Canal | Deschutes | 3,438 ft (1,048 m) | 44°06′46″N 121°17′18″W | Bend | 1150727 |
| Swayne Ditch | Jackson | 1,591 ft (485 m) | 42°08′49″N 123°03′24″W | Ruch | 1155054 |
| Swinger Ditch | Baker | 3,405 ft (1,038 m) | 44°54′50″N 117°52′20″W | Magpie Peak | 1150788 |
| T Canal | Klamath | 4,137 ft (1,261 m) | 42°02′35″N 121°23′57″W | Malin | 1127851 |
| T Canal | Umatilla | 472 ft (144 m) | 45°53′34″N 119°14′38″W | Hat Rock | 1127852 |
| Table Rock Canal | Jackson | 1,217 ft (371 m) | 42°27′19″N 122°54′39″W | Sams Valley | 1134762 |
| Talent Lateral | Jackson | 1,719 ft (524 m) | 42°16′13″N 122°51′58″W | Medford East | 1161540 |
| Talent Middle Canal | Jackson | 1,696 ft (517 m) | 42°15′29″N 122°50′01″W | Medford East | 1134787 |
| Taylor Ditch | Baker | 4,281 ft (1,305 m) | 44°40′25″N 117°24′59″W | Lawrence Creek | 1129440 |
| Taylor Ditch | Umatilla | 682 ft (208 m) | 45°42′49″N 119°10′34″W | Echo | 1129888 |
| The Drain | Josephine | 876 ft (267 m) | 42°25′47″N 123°25′34″W | Wilderville | 1135455 |
| The Mill Ditch | Grant | 3,609 ft (1,100 m) | 44°26′54″N 118°42′20″W | Prairie City | 1151026 |
| Thompson Ditch | Baker | 4,003 ft (1,220 m) | 44°31′42″N 118°13′41″W | Unity Reservoir | 1153984 |
| Three Sisters Canal | Deschutes | 2,818 ft (859 m) | 44°20′18″N 121°23′27″W | Henkle Butte | 1150262 |
| Threemile Ditch | Wasco | 2,090 ft (640 m) | 45°14′11″N 121°19′49″W | Wamic | 1151192 |
| Throop Ditch | Grant | 2,342 ft (714 m) | 44°28′42″N 119°31′59″W | Dayville | 1153768 |
| Tiger Ditch | Baker | 3,996 ft (1,218 m) | 44°28′30″N 118°13′59″W | Unity | 1153978 |
| Tobin Ditch | Baker | 2,612 ft (796 m) | 44°49′11″N 117°12′27″W | Richland | 1151291 |
| Tokay Canal | Josephine | 1,109 ft (338 m) | 42°26′34″N 123°18′04″W | Grants Pass | 1135239 |
| Townsite Ditch | Malheur | 3,002 ft (915 m) | 43°44′43″N 118°05′38″W | Juntura | 1128180 |
| Travillion-Koester ditch | Baker | 3,255 ft (992 m) | 45°00′00″N 117°52′51″W | North Powder | 1131533 |
| Trout Creek | Union | 6,237 ft (1,901 m) | 45°04′52″N 117°30′34″W | Flagstaff Butte | 1128236 |
| Trowbridge Ditch | Grant | 3,120 ft (950 m) | 44°25′28″N 118°56′54″W | John Day | 1638244 |
| Tudor Ditch | Malheur | 3,924 ft (1,196 m) | 42°41′25″N 117°54′34″W | Flat Top Mountain | 1130448 |
| Tumalo Canal | Deschutes | 3,327 ft (1,014 m) | 44°11′10″N 121°22′38″W | Tumalo Dam | 1151489 |
| Tumalo Feed Canal | Deschutes | 3,537 ft (1,078 m) | 44°07′06″N 121°22′59″W | Shevlin Park | 1151494 |
| Tunnel Millrace | Lane | 561 ft (171 m) | 43°53′21″N 123°00′43″W | Creswell | 1128299 |
| U S B Line Canal | Umatilla | 676 ft (206 m) | 45°47′59″N 119°14′49″W | Stanfield | 1129811 |
| Umatilla Drain | Umatilla | 440 ft (130 m) | 45°53′59″N 119°18′02″W | Umatilla | 1128401 |
| Uncle Tom Slough | Columbia | 13 ft (4.0 m) | 46°07′19″N 123°15′54″W | Marshland | 1132301 |
| Upper Ditch | Malheur | 2,205 ft (672 m) | 44°10′39″N 116°59′03″W | Weiser South | 1128445 |
| Upper Fisher Long Ditch | Baker | 3,691 ft (1,125 m) | 44°55′19″N 118°02′04″W | Rock Creek | 1128450 |
| Upper Hanley Canal | Harney | 4,140 ft (1,260 m) | 43°34′03″N 118°58′05″W | Poison Creek Slough | 1128454 |
| Upper Pump Canal | Malheur | 2,264 ft (690 m) | 43°58′30″N 117°08′54″W | Vale East | 1164024 |
| Upper West Lateral | Jackson | 2,172 ft (662 m) | 42°12′52″N 122°48′19″W | Talent | 1151710 |
| Upton Lateral | Jackson | 1,286 ft (392 m) | 42°23′29″N 122°53′22″W | Sams Valley | 1134759 |
| Urlezaga Ditch | Malheur | 4,324 ft (1,318 m) | 42°59′22″N 117°09′04″W | Antelope Reservoir | 1130452 |
| V Canal | Klamath | 4,170 ft (1,270 m) | 42°03′39″N 121°25′24″W | Malin | 1128490 |
| Vale Oregon Canal | Malheur | 2,569 ft (783 m) | 43°59′41″N 117°19′42″W | Vale West | 1639340 |
| Valley View Drain | Malheur | 2,182 ft (665 m) | 43°58′20″N 116°59′44″W | Nyssa | 1163881 |
| Van Brimmer Canal | Klamath | 4,081 ft (1,244 m) | 42°00′06″N 121°36′05″W | Merrill | 1128501 |
| Vines Ditch | Malheur | 2,365 ft (721 m) | 43°56′19″N 117°26′32″W | Vines Hill | 1128543 |
| Visher Feed Canal | Malheur | 3,612 ft (1,101 m) | 43°26′00″N 118°11′24″W | McEwen Butte | 1131823 |
| Volmer Ditch | Hood River | 2,723 ft (830 m) | 45°28′27″N 121°37′14″W | Dog River | 1154331 |
| Vroman Ditch | Jackson | 1,148 ft (350 m) | 42°31′49″N 123°09′24″W | Wimer | 1135415 |
| W A Lateral | Klamath | 4,278 ft (1,304 m) | 43°36′47″N 121°33′49″W | Masten Butte | 1153037 |
| W R Lateral | Deschutes | 4,272 ft (1,302 m) | 43°36′49″N 121°32′54″W | Masten Butte | 1153036 |
| Wade Ditch | Wallowa | 3,438 ft (1,048 m) | 45°28′27″N 117°22′55″W | Lostine | 1151795 |
| Walker Basin Canal | Klamath | 4,288 ft (1,307 m) | 43°35′29″N 121°34′09″W | Masten Butte | 1153038 |
| Walker Ditch | Marion | 135 ft (41 m) | 45°04′02″N 122°49′34″W | Silverton | 1161027 |
| Walker Drain | Malheur | 2,244 ft (684 m) | 43°40′58″N 117°04′00″W | Adrian | 1128592 |
| Wallowa Valley Improvement Canal | Wallowa | 4,934 ft (1,504 m) | 45°18′10″N 117°06′32″W | Kinney Lake | 1151866 |
| Walterville Canal | Lane | 551 ft (168 m) | 44°04′04″N 122°50′28″W | Walterville | 1128621 |
| Wapinitia Canal | Wasco | 1,923 ft (586 m) | 45°09′14″N 121°13′09″W | Tygh Valley | 1153136 |
| Ward Drain | Malheur | 2,182 ft (665 m) | 43°52′05″N 117°00′19″W | Owyhee | 1166866 |
| Warm Springs Canal | Harney | 4,183 ft (1,275 m) | 42°50′39″N 118°54′54″W | Frenchglen | 1128651 |
| Warm Springs Pump Canal | Malheur | 2,313 ft (705 m) | 44°02′08″N 117°16′21″W | Willowcreek | 1166718 |
| Waterbury Ditch | Baker | 2,444 ft (745 m) | 44°47′55″N 117°12′00″W | Richland | 1151942 |
| Watts and Topping Ditch | Josephine | 1,191 ft (363 m) | 42°17′24″N 123°14′36″W | Applegate | 1135261 |
| Weatherspoon Ditch | Baker | 4,764 ft (1,452 m) | 45°40′00″N 117°16′44″W | Sled Springs | 1129537 |
| Welch Drain | Malheur | 2,211 ft (674 m) | 43°41′29″N 117°03′01″W | Adrian | 1128781 |
| Wendt Ditch | Baker | 3,402 ft (1,037 m) | 44°29′12″N 117°43′56″W | Bridgeport | 1128802 |
| West Canal | Klamath | 4,150 ft (1,260 m) | 42°04′48″N 121°15′23″W | Bryant Mountain | 1128815 |
| West Canal | Klamath | 4,098 ft (1,249 m) | 42°01′25″N 121°51′24″W | Worden | 1162439 |
| West Extension Irrigation Canal | Morrow | 397 ft (121 m) | 45°54′04″N 119°25′55″W | Irrigon | 1128829 |
| West Lateral | Jackson | 1,985 ft (605 m) | 42°14′27″N 122°49′18″W | Talent | 1152132 |
| West Side Ditch | Grant | 4,554 ft (1,388 m) | 43°58′10″N 118°57′19″W | Trout Creek | 1154246 |
| Westland A Canal | Umatilla | 561 ft (171 m) | 45°51′24″N 119°21′19″W | Hermiston | 1129833 |
| Westland F Canal | Umatilla | 535 ft (163 m) | 45°50′19″N 119°21′29″W | Hermiston | 1129832 |
| Westside Ditch | Wallowa | 3,625 ft (1,105 m) | 45°28′50″N 117°26′54″W | Lostine | 1152160 |
| Wham Whited Ditch | Baker | 3,911 ft (1,192 m) | 44°29′30″N 118°12′44″W | Unity | 1153979 |
| Whitby Ditch | Benton | 249 ft (76 m) | 44°28′16″N 123°18′23″W | Greenberry | 1136901 |
| White Ditch | Umatilla | 640 ft (200 m) | 45°58′13″N 118°34′01″W | Waterman | 1128977 |
| Whiteline Ditch | Klamath | 4,426 ft (1,349 m) | 42°19′55″N 121°44′19″W | Whiteline Reservoir | 1132655 |
| Wilcox Ditch | Lake | 4,951 ft (1,509 m) | 42°15′25″N 120°21′04″W | Crooked Creek Valley | 1130999 |
| Wilcox Ditch | Baker | 3,976 ft (1,212 m) | 44°54′21″N 118°02′48″W | Rock Creek | 1158553 |
| Willamette Falls Locks and Canal | Clackamas | 10 ft (3.0 m) | 45°21′18″N 122°37′3.47″W | ||
| Willams Ditch | Harney | 3,530 ft (1,080 m) | 43°48′10″N 118°19′54″W | Drinkwater Pass | 1132009 |
| Williams Ditch | Baker | 3,976 ft (1,212 m) | 44°50′55″N 118°00′34″W | Elkhorn Peak | 1129117 |
| Williams Ditch | Baker | 3,504 ft (1,068 m) | 44°57′10″N 118°01′07″W | Rock Creek | 1129118 |
| Williams Ditch | Baker | 4,491 ft (1,369 m) | 44°22′49″N 118°09′54″W | Unity | 1152389 |
| Williams Drain | Klamath | 4,331 ft (1,320 m) | 42°25′05″N 121°21′24″W | Beatty | 1155315 |
| Williams and Whalen Ditch | Jackson | 1,207 ft (368 m) | 42°32′59″N 123°07′33″W | McConville Peak | 1135409 |
| Williamson River Ditch | Klamath | 4,554 ft (1,388 m) | 42°59′24″N 121°31′29″W | Wildhorse Ridge | 1155412 |
| Willow Valley Canal | Klamath | 4,423 ft (1,348 m) | 42°00′50″N 121°08′34″W | Langell Valley | 1133113 |
| Wilson Ditch | Lake | 4,885 ft (1,489 m) | 42°19′20″N 120°22′26″W | Crooked Creek Valley | 1130995 |
| Wocus Drainage Canal | Klamath | 4,131 ft (1,259 m) | 42°14′54″N 121°54′19″W | Keno | 1161598 |
| Wolf Run Ditch | Wasco | 2,913 ft (888 m) | 45°24′59″N 121°20′47″W | Wolf Run | 1152602 |
| Wood River Canal | Klamath | 4,144 ft (1,263 m) | 42°37′39″N 121°58′28″W | Fort Klamath | 1134239 |
| Wrenn Dobbin Ditch | Wallowa | 4,117 ft (1,255 m) | 45°22′02″N 117°12′25″W | Joseph | 1152658 |
| Wright Ditch | Union | 3,330 ft (1,010 m) | 45°00′46″N 117°39′06″W | Medical Springs | 1131547 |
| Y J Canal | Klamath | 4,531 ft (1,381 m) | 42°57′29″N 121°35′54″W | Wildhorse Ridge | 1154999 |
| Yamsay Land and Cattle Company Ditch | Klamath | 4,531 ft (1,381 m) | 42°51′24″N 121°48′34″W | Fuego | 1154991 |
| Yankee Creek Siphon | Jackson | 1,542 ft (470 m) | 42°25′14″N 122°44′16″W | Brownsboro | 1129353 |
| Yonna Ditch | Klamath | 4,153 ft (1,266 m) | 42°13′29″N 121°26′52″W | Bonanza | 1152741 |
| Young Ditch | Malheur | 3,734 ft (1,138 m) | 44°20′10″N 117°56′34″W | Ironside | 1131942 |
| Z Canal | Umatilla | 535 ft (163 m) | 45°52′10″N 119°16′58″W | Hermiston | 1129405 |
| ZX Brattain Ditch | Lake | 4,314 ft (1,315 m) | 42°38′43″N 120°30′39″W | Paisley | 1152790 |
| Zell Ditch | Umatilla | 1,161 ft (354 m) | 45°54′41″N 118°22′01″W | Bowlus Hill | 1638734 |
| Zimmerman Ditch | Malheur | 3,947 ft (1,203 m) | 42°58′05″N 117°39′34″W | Owyhee Butte | 1131801 |