Nine-Mile Island (Mississippi River)
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Nickname: Shinkles Island | |
|---|---|
 Interactive map of Nine-Mile Island | |
| Geography | |
| Location | Upper Mississippi River |
| Coordinates | 42°26′10″N 90°34′30″W / 42.436°N 90.575°W |
| Area | 454 acres (184 ha) |
| Length | 2 mi (3 km) |
| Width | .5 mi (0.8 km) |
| Administration | |
United States | |
| State | Iowa |
Nine-Mile Island is a river island located in Mosalem Township, Dubuque County, Iowa, between Dubuque, Iowa and Bellevue, Iowa on the Upper Mississippi River.[1]
Nine-Mile Island is situated within Pool 12 of the Upper Mississippi River, between Locks and Dams Nos. 11 and 12. The head (northwestern end) of the island is at UMR river mile 574.3, with the southeastern end at mile 571.5. It is about 2 miles long and .5 mile at its widest point, with a total area of 454 acres.[2] Within the island is a lake called Green Lake.[1]
The island is immediately downriver from Frentress Lake, site of a popular marina in East Dubuque, Illinois. It is adjacent to the unincorporated community of Massey, Iowa, which houses marina facilities. The island is bordered on the southwest by Molo Slough and on the northeast by the USACE's nine-foot navigation channel. Since it is on the Mississippi River, Nine-Mile Island is on the extreme eastern side of Iowa, adjacent to its border with Illinois.
The USACE also maintains two aids to navigation on the island: Nine-Mile Island Daybeacon at UMR river mile 573.5, and Nine-Mile Island Light at mile 571.5, both on the right descending bank.[3]
History
The island's name comes from the fact that its head is located nine river miles below Eagle Point (42°32′06″N 90°38′42″W / 42.535°N 90.645°W). It was also historically known as Shinkles Island, as evidenced by the Army Corps' Shinkles Island Bar Daybeacon at UMR mile 574.1 on the left descending bank (Illinois side of the river).[3]
The island was also the site of a steamboat race in 1885 between the Dan Thayer and Clyde.[4]