Ancho Dam A-8

Ancho Dam A-8 is an earth dam located in Colfax County, New Mexico, built in 1997. It carries a Low hazard potential classification and has a satisfactory condition assessment.

About Ancho Dam A-8

The primary purpose of Ancho Dam A-8 is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Chevron Mining Inc. (ancho Dams) (private). It impounds the Vermejo River - Tr.

The dam stands 37 feet tall and stretches 530 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 174 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1997, the structure is 29 years old.

This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 10/04/2012. That was over 13 years ago.

At 37 feet, this dam is taller than 84% of dams nationwide.

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Low HazardSatisfactory ConditionEmergency Action Plan: Not Required

Location

StateNew Mexico
CountyColfax
River/StreamVermejo River - Tr
Coordinates36.80340, -104.84860

Physical Characteristics

Dam TypeEarth
NID Height37 ft
Dam Height37 ft
Dam Length530 ft
Year Completed1997 (29 years old)

Storage & Hydraulics

NID Storage174 acre-ft
Max Storage174 acre-ft
Surface Area1 acres
Drainage Area3 sq mi
Max Discharge4,900 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeFlood Risk Reduction
OwnerCHEVRON MINING INC. (ANCHO DAMS)
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentSatisfactory
Last Inspection10/04/2012
Emergency Action PlanNot Required

Identifiers

NID IDNM00587
Federal IDNM00587
More InfoState Dam Safety Program

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