Alauksts

Alauksts (also Alauksta ezers)^[1] is a natural lake in Vecpiebalga Parish, Cēsis Municipality, Latvia. It is 202.3 metres above sea level at the Vidzeme Upland.

LocationLatvia

Coordinates57°05′37″N 25°46′12″E

Primary outflowsSilakroga grāvis, Gaujiņa

Catchment area14.8 km² (5.7 sq mi)

Quick facts Location, Coordinates ...

Alauksts
Alauksta ezers
Alauksts along the Cēsis–Madona road
Alauksts
Location	Latvia
Coordinates	57°05′37″N 25°46′12″E
Primary outflows	Silakroga grāvis, Gaujiņa
Catchment area	14.8 km2 (5.7 sq mi)
Max. width	4.8 km2 (1.9 sq mi)
Surface area	7.75 m2 (83.4 sq ft)
Average depth	3.3 m (11 ft)
Max. depth	7 m (23 ft)
Water volume	0.0258 km3 (0.0062 cu mi)
Surface elevation	202.3 m (664 ft)
Islands	2

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Alauksts is a part of the Vecpiebalga Protected Landscape Area. The lake is oval, with its long axis running NW-SE. The lake has two islands — Lielā sala ('Large Island', 0,8 ha) and Mazā sala (also Vidsniedre, 'Small Island', 0,76 ha).

The lake bed is partially covered by mud and a layer of sapropel up to 5 meters high. The coastline is mostly flat, with exceptions in the south. The Gaujiņa, which later expands into the Gauja, the longest river of Latvia, flows out of Alauksts. The Silakrogs Canal (Silakroga grāvis), which was built in the 19th century, originates from Alauksts and flows towards Tauns Lake.

Nine species of fish have been observed in the lake (common roach, bream, pike, perch, chub etc.). It is eutrophic lake with considerable amounts of toxic green algae.

The paved Cēsis—Madona (P30) road is located along the lake's SW coast, on the SE coast — the Vecpiebalga—Greiveri dirt road.