Active SpawningActive 2024-25Manning feeder

Thompson Creek

SW shore, Manning Creek feeder. CDFW confirmed adults 2024 and 2025. Rerouted from Rumsey Slough, it now feeds Manning Creek in the Big Valley corridor.

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Creek Conditions

Current Season Status

Thompson 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.

Spawning Phase

Auto-calculated

Off

season

Post-spawn · next year builds now

Updates on page load

Clear Lake Level

USGS 11450000

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USGS lake level record ↗

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If you spot hitch stranded in a dry or disconnected section, call immediately. Permits are required; do not attempt relocation yourself.

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About This Creek

Thompson Creek

CDFW confirmed adults 2024 and 2025. Rerouted from Rumsey Slough, it now feeds Manning Creek in the Big Valley corridor.

Joins Manning Creek upstream. CDFW confirmed adults in 2024 and 2025.

Thompson Creek is part of the Big Valley & south shore, one of several tributaries that drain this part of the watershed.

Key Data

CDFW 2024 to 2025Adults confirmed

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

Thompson Creek in the field

5 photos documenting survey reaches, barriers, fish observations, and seasonal conditions from Lake County Watershed Protection District community science monitoring.

Fish observed

Thompson Creek HitchDownstream · 3/27/25

Monitoring site

Lower Reach Thompson Creek at Highland Springs…Lower reach · 3/17/23

Monitoring site

Upstream Reach Thompson CreekUpstream reach · 3/21/23

Dry / low flow

Dry Creek Bed Upstream Reach Thompson CreekUpstream reach · 6/7/23

Monitoring site

Historic Thompson Creek That Feeds into Rumsey…4/17/23