Imperial Reservoir and Martinez Lake, Imperial National Wildlife Refuge (NWR)
- Lake name:
- Imperial Reservoir and Martinez Lake, Imperial National Wildlife Refuge (NWR)
- Location:
- Arizona
- Latitude:
- 32.911508
- Longitude:
- -114.472287
- Surface area (km2):
- 14.3
- Basin type:
- reservoir
- Dam completion date:
- 1938
- Management agency:
- U.S. Fish and Wildlife Service; Bureau of Reclamation; Imperial Irrigation District
- Lake use:
- desilting water supply
- Region associations:
- Colorado River; Southwest Arizona NWR Complex; Cibola NWR
- Comments:
- 30 miles along the lower Colorado River. Part of the Southwest Arizona National Wildlife Refuge Complex along with Cibola NWR. Wetlands created with creation of the Imperial Dam in 1938. Imperial NWR includes various lakes and wetlands along the Colorado River so the refuge as a whole is entered seperately from Imperial Reservoir and Martinez Lake.
Summary of Surveys (1)
Survey Citation:
Manning, A. 2006. Colony list, unpublished data.
-
Time period
2006 or prior -
Source
Summary -
Both Western and Clarks?
Y
Count Type | Range | Max | Year |
---|---|---|---|
Max Adults | 1 to 100 | presence | 2006 or prior |
Most Recent Adults | 1 to 100 | presence | 2006 or prior |
Max Nests | 1 to 100 | presence | 2006 or prior |
Most Recent Nests | 1 to 100 | presence | 2006 or prior |
Max Chicks | N/A | N/A | N/A |
Most Recent Chicks | N/A | N/A | N/A |
Comments:
Unpublished data from Ann Manning with the Utah Division of Wildlife, forwarded by Gary Ivey. Ivey said year saved was 2006 but otherwise unknown when this list was determined by Manning, hence year noted as 2006 or prior. This is on a list of known colonies of Western and Clark's grebes. No year nor other info provided.
Sources of Information
- Lake coordinates, Google Earth, earth.google.com/web/
- Imperial Dam - Imperial Irrigation District
- Imperial Diversion Dam
- Arizona Important Birds Area Program - Imperial Reservoir Important Bird Area (IBA)
- Explore Important Bird Areas (IBA) Interactive Map Important Bird Areas
- https://www.fws.gov/refuge/imperial