Mountain Meadows Reservoir (Walker Lake)
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View Surveys (4)
View Sources (7)
Grebe Survey Summary
- Max Adults: 150
- Year: 2008
- Most Recent Adults: 50
- Year: 2009
- Survey Type: Shore; Air
- Most Common Threats Reported: N/A
- Lake name:
- Mountain Meadows Reservoir (Walker Lake)
- Location:
- California
- HydroLAKE ID:
- 9188
- GRanD ID:
- 136
- Latitude:
- 40.282206
- Longitude:
- -121.023036
- Surface area (km2):
- 18.7
- Basin type:
- reservoir
- Dam completion date:
- 1924
- Management agency:
- Pacific Gas & Electric Company; Feather River Land Trust; California Department of Fish and Wildlife; Mountain Meadows Conservancy
- Lake use:
- water supply pollution control other
- Region associations:
- Mountain Meadows; Basin Lake Almanor
- Designations:
- Conservation easement
- Comments:
- Mountain Meadows Reservoir is a conservation easement that allows public access. The reservoir went dry in 2015 due to drought and structural problems and CA Department of Fish and Wildlife worked to restore the fishery. Shallow lake where deepest part is 16 feet.
Surveys (4)
Survey Citation:
Ivey, G. L. 2004. Conservation assessment and management plan for breeding Western and Clarkâs Grebes in California. Unpublished technical report. American Trader Trustee Council, California. . Accessed 15 January 2020.
-
Type
shore; air -
Time period
19 August 2003 -
Source
Conservation Assessment, Management Plan -
Both Western and Clarks?
N/A
| Count Type | Range | Max | Year |
|---|---|---|---|
| Max Adults | 1 to 100 | 20 | 2003 |
| Most Recent Adults | 1 to 100 | 20 | 2003 |
| Max Nests | 1 to 100 | 10 | 2003 |
| Most Recent Nests | 1 to 100 | 10 | 2003 |
| Max Chicks | N/A | N/A | N/A |
| Most Recent Chicks | N/A | N/A | N/A |
Comments:
August 19, 2003 surveyed only chicks from air and nest/adult #s in Table 3 is estimated from that. No # of chicks provided though. Represents 1% or less of the grebes at the selected sites and 0.1% of the grebes in the Intermountain West (Ivey and Herziger in prep.). Also in Ivey Region 1 Non Game California Waterbird Atlas spreadsheet, did not re-enter.
Survey Citation:
Robison, K., R. Weems, and D. Anderson. 2008. Western and Clark's Grebe conservation and management in California. Annual report for year three (2007). Report for American Trader and Kure/ Stuyvesant Trustee Councils and National Fish and Wildlife Foundation, California.
-
Type
shore -
Time period
20 July 2007 -
Source
Report -
Both Western and Clarks?
Y
| Count Type | Range | Max | Year |
|---|---|---|---|
| Max Adults | 1 to 100 | 8 | 2007 |
| Most Recent Adults | 1 to 100 | 8 | 2007 |
| Max Nests | N/A | N/A | N/A |
| Most Recent Nests | N/A | N/A | N/A |
| Max Chicks | 1 to 100 | 2 | 2007 |
| Most Recent Chicks | 1 to 100 | 2 | 2007 |
Comments:
This was a partial survey, the grebes were observed near the dam. Two of the adults had stained plumage that may be indication of exposure to oil spills on the coast. Subsequent reports have their own entries. There is good nesting habitat here and this lake has potential to be a good breeding lake.
Survey Citation:
Robison, K., R. Weems, and D. Anderson. 2008. Western and Clark's Grebe conservation and management in California. Annual report for year four (2008). Report for American Trader and Kure/ Stuyvesant Trustee Councils and National Fish and Wildlife Foundation, California.
-
Type
shore -
Time period
2008 -
Source
Report -
Both Western and Clarks?
Y
| Count Type | Range | Max | Year |
|---|---|---|---|
| Max Adults | 101 to 500 | 150 | 2008 |
| Most Recent Adults | 101 to 500 | 150 | 2008 |
| Max Nests | 1 to 100 | 25 | 2008 |
| Most Recent Nests | 1 to 100 | 25 | 2008 |
| Max Chicks | 1 to 100 | 11 | 2008 |
| Most Recent Chicks | 1 to 100 | 11 | 2008 |
Comments:
Data from Table 3. Date of surveys not provided. Productivity rate from # of adults in sample and # of young in sample. Estimated total # of adults is entered here. Aerial survey is recommended for a more accurate estimate of nest #s. No other information provided. Subsequent reports have their own entries.
Survey Citation:
Robison, K., R. Weems, D. Anderson, and F. Gress. 2010. Western and Clark's Grebe conservation and management in California. Annual report (2009). Report for California Institute of Environmental Studies, Davis, California.
-
Type
shore; air -
Time period
30 July 2009, 12 August 2009 -
Source
Report -
Both Western and Clarks?
Y
| Count Type | Range | Max | Year |
|---|---|---|---|
| Max Adults | 1 to 100 | 50 | 2009 |
| Most Recent Adults | 1 to 100 | 50 | 2009 |
| Max Nests | 1 to 100 | 3 | 2009 |
| Most Recent Nests | 1 to 100 | 3 | 2009 |
| Max Chicks | 0 | 0 | 2009 |
| Most Recent Chicks | 0 | 0 | 2009 |
Comments:
Data from Table 1. Good nesting habitat available. There is no chick # but productivity is 0 for July 30 survey.
Sources of Information
- Messager, M. L., B. Lehner, G. Grill, I. Nedeva, and O. Schmitt. 2016. Estimating the volume and age of water stored in global lakes using a geo-statistical approach. Nature Communications 7:13603. Data is available at www.hydrosheds.org.; Lehner, B., C. Reidy Liermann, C. Revenga, C. Vorosmarty, B. Fekete, P. Crouzet, P. Doll, M. Endejan, K. Frenken, J. Magome, C. Nilsson, J.C. Robertson, R. Rodel, N. Sindorf, and D. Wisser. 2011. Global Reservoir and Dam Database, Version 1 (GRanDv1): Dams, Revision 01. Palisades, New York: NASA Socioeconomic Data and Applications Center (SEDAC).
- Lehner, B., C. Reidy Liermann, C. Revenga, C. Vorosmarty, B. Fekete, P. Crouzet, P. Doll, M. Endejan, K. Frenken, J. Magome, C. Nilsson, J.C. Robertson, R. Rodel, N. Sindorf, and D. Wisser. 2011. Global Reservoir and Dam Database, Version 1 (GRanDv1): Dams, Revision 01. Palisades, New York: NASA Socioeconomic Data and Applications Center (SEDAC).
- Mountain Meadows Reservoir Information
- Mountain Meadows Reservoir Water Loss 2015
- Mountain Meadows Reservoir Rebuilding Fishery
- Mountain Meadows Watershed Restoration Action Plan (MM WRAP)
- Mountain Meadows Reservoir Water Rights Agreement