Coyote Valley Dam Quick Facts
Coyote Valley Dam Map
Coyote Valley Dam Information
Coyote Valley Dam is an earthen embankment dam located about 2 miles from Ukiah, Mendocino, California.
The dam, which is on the East Fork Russian River, was primarily built for Flood Risk Reduction purposes, but also serves for Recreation, Hydroelectric and Water Supply benefits.
The dam was designed by CESPN and commissioned in 1959 and is currently owned by USACE – San Francisco District.
Coyote Valley Dam Structure
The Coyote Valley Dam is approximately 3,525 feet (1,074 m) long, 164 feet (50 m) high and has a structural volume of 0 cubic yards (0 cubic metres).
Coyote Valley Dam Storage Capacity & Surface Area
The reservoir has a normal storage capacity of 74,500 acre-ft (91,894 Ml) and maximum capacity of 155,500 acre-ft (191,806 Ml).
The surface area of the reservoir is 1,740 acres (704 ha) and the total catchment area is 105 square miles (272 square kilometres).
Coyote Valley Dam Spillway
The dam has a 250 feet (76 m) wide uncontrolled spillway with a maximum discharge capacity of 35800 cubic feet per second (1014 cubic metres per second).
Coyote Valley Dam Compared to Five Famous American Dams
Coyote Valley Dam Weather
Current Conditions at Coyote Valley Dam
| Parameter | Value |
|---|---|
| Current Time | 21:31 |
| Sunrise | 07:15 |
| Sunset | 16:50 |
| Temperature (°F) | 48 |
| Feels Like (°F) | 48 |
| Cloud Coverage (%) | 0 |
| Pressure (inHg) | 1022 |
| Humidity (%) | 81 |
| Wind Speed (mph) | 0 |
| Rain (mm) | 0 |
7-Day Forecast for Coyote Valley Dam
| Day | Min Temp (°F) | Max Temp (°F) | Feels Like (°F) | Pressure (inHg) | Humidity (%) | Wind Speed (mph) | Wind Gust (mph) | Wind Dir | Precip Prob (%) | Precip Volume (mm) | Weather |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Today | 48 | 68 | 66 | 1020 | 59 | 3 | 4 | W | 0 | - |  |
| Wed | 49 | 67 | 65 | 1022 | 58 | 4 | 3 | W | 0 | - | |
| Thu | 48 | 65 | 63 | 1022 | 52 | 5 | 8 | WNW | 0 | - |  |
| Fri | 45 | 66 | 62 | 1021 | 40 | 3 | 4 | N | 0 | - |  |
| Sat | 49 | 63 | 61 | 1020 | 46 | 4 | 5 | WNW | 0 | - | |
| Sun | 42 | 59 | 57 | 1020 | 41 | 9 | 19 | NW | 0 | - | |
| Mon | 37 | 61 | 58 | 1025 | 30 | 5 | 4 | NNE | 0 | - | |
| Tue | 38 | 60 | 57 | 1029 | 33 | 4 | 3 | ENE | 0 | - | |
Coyote Valley Dam Frequently Asked Questions
Coyote Valley Dam is in California.
Coyote Valley Dam is in Mendocino County.
Coyote Valley Dam is 164 feet high.
Coyote Valley Dam is 3,525 feet long.
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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