HomeTributariesRumsey Slough
Survey SiteHistoric channel

Rumsey Slough

South shore, historic Thompson Creek channel. Enters between Manning and Adobe Creeks. Historic Thompson Creek channel once drained here before being rerouted into Manning.

Current Season Status
Rumsey Slough 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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Rumsey Slough

Enters between Manning and Adobe Creeks. Historic Thompson Creek channel once drained here before being rerouted into Manning.

Enters the south shore between Manning Creek and Adobe Creek. A historic channel of Thompson Creek also connected here.

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

DrainageBig Valley corridor

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.

Rumsey Slough in the field

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

Rumsey Slough (car Has Been Removed — 12/19/24
Monitoring site
Rumsey Slough (car Has Been Removed12/19/24