Mountain Meadows Reservoir Report

Last Updated: December 5, 2025

Mountain meadows in California are unique ecosystems that provide critical hydrological functions such as water storage, filtration, and release.


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Summary

These meadows are also important habitat for a variety of wildlife and plants. Historically, many of these meadows were used for agriculture and grazing, which often resulted in significant degradation. However, efforts are now underway to restore these important ecosystems.

The hydrology of mountain meadows is complex, with specific surface flow and snowpack providers contributing to the water supply. Snowpack provides a large portion of the water in the spring and summer, while specific surface flow occurs when groundwater discharges onto the surface, resulting in the formation of a stream.

Agricultural uses of mountain meadows have decreased in recent years, but some grazing still occurs. Recreational uses include hiking, fishing, and wildlife viewing. Overall, mountain meadows are important ecosystems that provide essential hydrological functions and habitat for wildlife.

Reservoir Details

Storage 24hr Change -0.64%
Percent of Normal 287%
Minimum 50.0 acre-ft
2015-09-13
Maximum 89,729.0 acre-ft
2020-08-27
Average 4,971 acre-ft
       
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.