East shore, Seigler Canyon system. Adults confirmed March through May 2024, the most encouraging signal from the Seigler Canyon drainage in two decades.
Copsey Creek does not have a dedicated USGS streamflow gauge. Conditions are assessed through CDFW and Lake County WPD visual surveys and the lake-wide spawn phase indicator below.
Adults confirmed March through May 2024, the most encouraging signal from the Seigler Canyon drainage in two decades.
Copsey Creek is part of the Seigler Canyon / Cache Creek drainage, one of several tributaries that drain this part of the watershed.
One of Clear Lake's 27 documented tributaries. Detailed survey history and field photos are available for the priority spawning streams: Kelsey, Adobe, Burns Valley, and Forbes.
Field Photos
Copsey Creek in the field
6 photos documenting survey reaches, barriers, fish observations, and seasonal conditions from Lake County Watershed Protection District community science monitoring.
Monitoring site
Downstream Reach Copsey Creek at Copsey Creek WayDownstream reach · 4/24/26
Monitoring site
Downstream Reach Copsey Creek at Copsey Creek WayDownstream reach · 4/24/26
Monitoring site
Downstream Reach Copsey Creek at Copsey Creek WayDownstream reach · 4/24/26
Monitoring site
Copsey Creek at Morgan Valley Road Upstream…Upstream · 4/24/26
Monitoring site
Copsey Creek at Morgan Valley Road Upstream…Upstream · 4/24/26
Monitoring site
Upstream Reach Copsey Creek at Spruce Grove RoadUpstream reach · 5/1/25
