Haiwee Reservoir Report

Last Updated: November 18, 2025

Haiwee Reservoir is located in Inyo County, California and was constructed in 1923.


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Summary

It is fed by several creeks, including Haiwee Creek, as well as snowmelt from the nearby Sierra Nevada mountains. The reservoir has a storage capacity of 45,000 acre-feet and provides water to local agricultural and municipal users. The reservoir is part of the Owens Valley Hydrologic System, which also includes the Owens River and several other reservoirs. Recreation at Haiwee Reservoir is limited, with fishing being the most popular activity. The surrounding area is also popular for hiking and camping. The reservoir is managed by the Los Angeles Department of Water and Power, which has faced criticism for its management of the Owens Valley water resources.

Reservoir Details

Storage 24hr Change -0.09%
Percent of Normal 117%
Minimum 20,011.0 acre-ft
2021-10-03
Maximum 58,141.0 acre-ft
2023-07-14
Average 30,268 acre-ft
Nid_Height 81
Hydraulic_Height 67
Primary_Dam_Type Earth
Drainage_Area 89
Year_Completed 1913
Dam_Height 81
River_Or_Stream Rose Valley
Surface_Area 1350
Hazard_Potential High
Nid_Storage 60600
Dam_Length 1555
       
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.
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