Lake Wallula near Foundation Island, Columbia River
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View Surveys (1)
View Sources (7)
Grebe Survey Summary
- Max Adults: presumably >100
- Year: 2022
- Most Recent Adults: presumably >100
- Year: 2022
- Survey Type: N/A
- Most Common Threats Reported: N/A
- Lake name:
- Lake Wallula near Foundation Island, Columbia River
- Location:
- Washington
- Latitude:
- 46.137101
- Longitude:
- -118.991837
- Surface area (km2):
- 106.3
- Basin type:
- reservoir
- Management agency:
- Washington Department of Fish and Wildlife (WDFW); U.S. Army Corps of Engineers
- Region associations:
- Columbia River; Wallula Gap; McNary NWR
- Comments:
- Lake Wallula extends for 64 miles upstream from the McNary Dam along the Columbia River. It is near the Wallula Gap, where the Ice Age Floods drained through. In the late Pleistocene, constrictions at the dam formed ephemeral lakes such as Lake Lewis. Grebe colony sites at this lake in the Columbia River are near Foundation Island, part of McNary National Wildlife Refuge near Burbank.
Surveys (1)
Survey Citation:
Washington Department of Fish and Wildlife. 2012. Annual Report .
-
Time period
1990, 2011 -
Source
State factsheet -
Both Western and Clarks?
Y
| Count Type | Range | Max | Year |
|---|---|---|---|
| Max Adults | 101 to 500 | 344 | 1990 |
| Most Recent Adults | 1 to 100 | 56 | 2011 |
| Max Nests | 1 to 100 | ~100 | 2007 |
| Most Recent Nests | 1 to 100 | ~100 | 2007 |
| Max Chicks | N/A | N/A | N/A |
| Most Recent Chicks | N/A | N/A | N/A |
Comments:
Surveys in 1990, 2007 and 2011. 344 adults (270 CL) in 1990. In 2011, 56 adults but combined.