Scott V
01-11-2008, 10:07 AM
I took this information straight off of the DFG website:
Fall restocking of Eagle Lake trout into Lake Davis was completed December 13 2007. Eight trucks from the American River Hatchery delivered 24,000 pounds of Eagle Lake trout – a total of about 31,200 fish. We consulted with and received the concurrence of the Lake Davis Steering Committee and the Department of Public Health prior to restocking. Additional plants will be made in the spring.
The California Department of Water Resources will be opening valves at Grizzly Valley Dam to prevent any freezing damage to the pipes in the pike containment structure downstream of the dam. All the releases will be run through the strainers as another fish monitoring measure. The releases, about ½ [one half] cubic feet per second (normal summertime releases are about ten cubic feet per second), are scheduled to begin sometime after Christmas. This will create additional flow in Big Grizzly Creek. These releases are in compliance with the terms of our National Pollution Discharge Elimination Permit (NPDES) from the Central Valley Regional Water Quality Control Board.
The only chemicals potentially remaining in the Lake Davis water from the rotenone treatment are very low levels of polyethylene glycols (PEG’s) from the ingredient called Fennodefo 99. These compounds are safe for both fish and humans (many are used in food products such as chewing gum and vitamins) at much higher levels than are currently in the water. These materials don’t build up in fish tissue. There were very low levels in Lake Davis on December 4th and levels have been declining steadily Information and updates on monitoring results are posted on the Department of Health Services’ website at: www.cdph.ca.gov/healthinfo/environhealth/water/Pages/LakeDavis.aspx as they become available.
Fall restocking of Eagle Lake trout into Lake Davis was completed December 13 2007. Eight trucks from the American River Hatchery delivered 24,000 pounds of Eagle Lake trout – a total of about 31,200 fish. We consulted with and received the concurrence of the Lake Davis Steering Committee and the Department of Public Health prior to restocking. Additional plants will be made in the spring.
The California Department of Water Resources will be opening valves at Grizzly Valley Dam to prevent any freezing damage to the pipes in the pike containment structure downstream of the dam. All the releases will be run through the strainers as another fish monitoring measure. The releases, about ½ [one half] cubic feet per second (normal summertime releases are about ten cubic feet per second), are scheduled to begin sometime after Christmas. This will create additional flow in Big Grizzly Creek. These releases are in compliance with the terms of our National Pollution Discharge Elimination Permit (NPDES) from the Central Valley Regional Water Quality Control Board.
The only chemicals potentially remaining in the Lake Davis water from the rotenone treatment are very low levels of polyethylene glycols (PEG’s) from the ingredient called Fennodefo 99. These compounds are safe for both fish and humans (many are used in food products such as chewing gum and vitamins) at much higher levels than are currently in the water. These materials don’t build up in fish tissue. There were very low levels in Lake Davis on December 4th and levels have been declining steadily Information and updates on monitoring results are posted on the Department of Health Services’ website at: www.cdph.ca.gov/healthinfo/environhealth/water/Pages/LakeDavis.aspx as they become available.