Clear Lake Dam Quick Facts
Clear Lake Dam Map
Clear Lake Dam Information
Clear Lake Dam is a gravity roller-compacted concrete dam located in Modoc County, California.
The dam, which is on the Lost River, was primarily built for Irrigation purposes, but also serves for benefits.
The dam was designed by US Bureau of Reclamation and commissioned in 1910 and is currently owned by US Bureau of Reclamation.
Clear Lake Dam Structure
The Clear Lake Dam is approximately 564 feet (172 m) long, 42 feet (13 m) high and has a structural volume of 18,000 cubic yards (13,762 cubic metres).
Clear Lake Dam Storage Capacity & Surface Area
The reservoir has a normal storage capacity of 374,080 acre-ft (461,420 Ml) and maximum capacity of 584,050 acre-ft (720,414 Ml).
The surface area of the reservoir is 23,960 acres (9,696 ha) and the total catchment area is 735 square miles (1,904 square kilometres).
Clear Lake Dam Spillway
The dam has a 357 feet (109 m) wide controlled spillway with a maximum discharge capacity of 0 cubic feet per second (0 cubic metres per second).
Clear Lake Dam Compared to Five Famous American Dams
Clear Lake Dam Weather
Current Conditions at Clear Lake Dam
Failed to fetch current weather data.7-Day Forecast for Clear Lake Dam
Failed to fetch weather forecast data.Clear Lake Dam Frequently Asked Questions
Clear Lake Dam is in California.
Clear Lake Dam is in Modoc County.
Clear Lake Dam is 42 feet high.
Clear Lake Dam is 564 feet long.
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Big Dobe North DamBig Sage Dam
Clear Lake Dam
Dorris Dam
Poison Springs Dam
Roberts Dam
West Valley Dam
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Clear Lake Dam
Clifton Court Forebay Dam
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Condition Assessment Classification
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.
Source: National Inventory of Dams