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Potter Valley Hydroelectric Project FERC Project No. 77

Project Overview

FERC Relicensing Scoping Process Environmental Site Review

June 27, 2017

Paul Kubicek PG&E, Senior Consulting Scientist

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Potter Valley Project

• 9.2-MW hydroelectric project

• Sufficient to power ~6,900 homes

• Inter-basin diversion of water from upper mainstem Eel River to upper Russian River (East Branch)

• Initial construction completed in 1908

• Operated under FERC license #77

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Eel River above Lake Pillsbury - Spring

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Eel River above Lake Pillsbury - Fall

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Lake Pillsbury

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Scott Dam / Lake Pillsbury

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Scott Dam / Radial Gates

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Scott Dam / Slide Gates

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Scott Dam / Needle Valve

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Eel River below Lake Pillsbury

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Cape Horn Dam / Van Arsdale Reservoir

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Cape Horn Dam Fish Ladder - Original

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Cape Horn Dam Fish Ladder – Current

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Cape Horn Dam – Storm Runoff

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Van Arsdale Fisheries Station – Chinook Salmon

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Van Arsdale Fisheries Station - Steelhead

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Van Arsdale Fisheries Station - Lamprey

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Van Arsdale Reservoir

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Van Arsdale Reservoir & Intake

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Van Arsdale Intake & Fish Screen

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Wood Stave Conduit

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Wood Stave Conduit

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Penstock & Potter Valley

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Potter Valley Powerhouse

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Potter Valley Powerhouse Turbines

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Potter Valley Powerhouse Tailrace

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PVID East Canal & East Branch Russian River

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Lake Mendocino

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Cape Horn Dam / Van Arsdale Reservoir

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Eel River below Cape Horn Dam

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Eel River above Outlet Creek

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Questions?