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Union Auxiliary No. 2 Dam
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Union Auxiliary No. 2 Dam Share
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Overview Share
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Dorrington, California
Privately owned

Union Auxiliary No. 2 Dam is a rockfill dam built on the North Fork Stanislaus River - and is located in Dorrington, California. It was built .

The dam is privately owned by Northern California Power Agency.

Location
Union Auxiliary No. 2 Dam
Dorrington, California, U.S.
Dam type
Rockfill
Dam type
Other
Purpose
Unknown
Foundation type
Unknown
Core type
Ownership Share
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Northern California Power Agency
Owner
Private

Union Auxiliary No. 2 Dam is privately owned by Northern California Power Agency.

Metrics Share
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Summary
Dam length 64 feet
Dam height 7 feet
Structural height 6 feet
Hydraulic height 6 feet
Max storage 3,283 acre feet
Normal storage 3,130 acre feet
Surface area 215 acres
Drainage area 15 square miles
64 feet
Dam length

Length of the dam is defined as the length along the top of the dam. This also includes the spillway, powerplant, navigation lock, fish pass, etc., where these form part of the length of the dam. If detached from the dam, these structures should not be included.

7 feet
Dam height

Height of the dam is defined as the vertical distance between the lowest point on the crest of the dam and the lowest point in the original streambed.

6 feet
Structural height

Structural height of the dam is defined as the vertical distance from the lowest point of the excavated foundation to the top of the dam. Top of dam refers to the parapet wall and not the crest.

6 feet
Hydraulic height

Hydraulic height of the dam is defined as the vertical difference between the maximum design water level and the lowest point in the original streambed.

3,283 acre feet
Max storage

Maximum storage is defined as the total storage space in a reservoir below the maximum attainable water surface elevation, including any surcharge storage.

3,130 acre feet
Normal storage

Normal storage is defined as the total storage space in a reservoir below the normal retention level, including dead and inactive storage and excluding any flood control or surcharge storage. For normally dry flood control dams, the normal storage will be a zero value.

215 acres
Surface area

Surface area, in acres, of the impoundment at its normal retention level.

15 square miles
Drainage area

Drainage area of the dam, in square miles, which is defined as the area that drains to a particular point (in this case, the dam) on a river or stream.

Safety Share
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Low
Downstream potential hazard

Dams assigned the low hazard potential classification are those where failure or misoperation results in no probable loss of human life and low economic and/or environ-mental losses. Losses are principally limited to the owner’s property.

Not required
Emergency action plan

An emergency action plan is defined as a plan of action to be taken to reduce the potential for property damage and loss of life in an area affected by a dam failure or large flood.

5/12/2015
Most recent inspection date

Inspections are every 1 ear.

About Share
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Distance to nearest town (miles) 17
Latitude 38
Longitude -119
NID ID (National ID) CA00426

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