Pit R Ph #6 Reservoir Report

Last Updated: January 11, 2026

Pit River Hydroelectric Project #6 is located in northeastern California and is operated by Pacific Gas and Electric Company.


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Summary

The project consists of a series of hydroelectric facilities on the Pit River, with the #6 plant being the largest and most powerful. The Pit River is fed by both snowpack and surface flow, with the majority of the flow coming from snowmelt. The project's operations are closely tied to the amount and timing of snowpack, with the winter months being critical for water storage. The reservoir created by the project provides irrigation water to nearby agricultural lands, and the river is also used for recreational activities such as fishing and kayaking. The project has a long history dating back to the early 1900s and has undergone several renovations to increase its efficiency and capacity.

Reservoir Details

Storage 24hr Change 3.17%
Percent of Normal 107%
Minimum 3,257.0 acre-ft
2021-12-25
Maximum 15,619.0 acre-ft
2022-09-04
Average 14,085 acre-ft
Dam_Height 228
Hydraulic_Height 223
Year_Completed 1965
Nid_Storage 34100
Hazard_Potential High
Structural_Height 228
River_Or_Stream Pit River
Surface_Area 69
Outlet_Gates Tainter (radial) - 2
Dam_Length 907
Primary_Dam_Type Concrete
Nid_Height 228
       
Seasonal Comparison
Storage Levels
Pool Elevation Levels
Top Conserv Storage Levels
Inflow Levels

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.