Rollins Dam Quick Facts
Rollins Dam Map
Rollins Dam Information
Rollins Dam is an earthen embankment dam located in Rd 174 Bridge, Combie Dam, Nevada, California.
The dam, which is on the Bear River, was primarily built for Water Supply purposes, but also serves for Irrigation, Recreation and Hydroelectric benefits.
The dam was designed by Ebasco Services, Inc. and commissioned in 1965 and is currently owned by Nevada Irrigation District.
Rollins Dam Structure
The Rollins Dam is approximately 1,840 feet (561 m) long, 228 feet (69 m) high and has a structural volume of 2,236,000 cubic yards (1,709,545 cubic metres).
Rollins Dam Storage Capacity & Surface Area
The reservoir has a normal storage capacity of 65,988 acre-ft (81,395 Ml) and maximum capacity of 65,988 acre-ft (81,395 Ml).
The surface area of the reservoir is 828 acres (335 ha) and the total catchment area is 104 square miles (269 square kilometres).
Rollins Dam Spillway
The dam has a 100 feet (30 m) wide uncontrolled spillway with a maximum discharge capacity of 60000 cubic feet per second (1699 cubic metres per second).
Rollins Dam Compared to Five Famous American Dams
Rollins Dam Weather
Current Conditions at Rollins Dam
| Parameter | Value |
|---|---|
| Current Time | 18:06 |
| Sunrise | 07:18 |
| Sunset | 17:11 |
| Temperature (°F) | 43 |
| Feels Like (°F) | 40 |
| Cloud Coverage (%) | 65 |
| Pressure (inHg) | 1032 |
| Humidity (%) | 67 |
| Wind Speed (mph) | 5 |
| Rain (mm) | 0 |
7-Day Forecast for Rollins 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 | 38 | 56 | 52 | 1032 | 31 | 7 | 7 | ENE | 0 | - |  |
| Wed | 42 | 67 | 63 | 1025 | 28 | 7 | 9 | ENE | 0 | - |  |
| Thu | 43 | 64 | 62 | 1025 | 27 | 7 | 7 | ENE | 0 | - | |
| Fri | 43 | 60 | 57 | 1016 | 34 | 6 | 7 | ENE | 0 | - |  |
| Sat | 35 | 48 | 42 | 1005 | 29 | 14 | 25 | ENE | 0 | - | |
| Sun | 31 | 54 | 50 | 1016 | 24 | 7 | 15 | NE | 0 | - | |
| Mon | 32 | 56 | 53 | 1021 | 28 | 8 | 12 | ENE | 0 | - | |
| Tue | 35 | 54 | 51 | 1021 | 38 | 6 | 3 | WSW | 0 | - | |
Rollins Dam Frequently Asked Questions
Rollins Dam is in California.
Rollins Dam is in Nevada County.
Rollins Dam is 228 feet high.
Rollins Dam is 1,840 feet long.
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Lake Fordyce Dam
Lake Spaulding No. 1 Dam
Martis Creek Dam
Meadow Lake Dam
Prosser Creek Dam
Rollins 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