Sheriff

Sheriff is an earth dam located in Rio Blanco County, Colorado, built in 1955. It carries a High hazard potential classification and has a unsatisfactory condition assessment.

About Sheriff

The primary purpose of Sheriff is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Town Of Oak Creek (tom Holiday, Director Of Public (local government). It impounds the Trout Creek near Milner.

The dam stands 72 feet tall and stretches 630 feet across, creates a reservoir covering 40 acres, has a maximum storage capacity of 1,450 acre-feet, and collects water from a drainage area of 12 square miles. Completed in 1955, the structure is well into its service life at over 50 years old.

This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated unsatisfactory, indicating serious safety deficiencies exist that require immediate attention or remedial action. An emergency action plan is in place for this dam. The most recent inspection on record was 10/04/2022.

At 72 feet, this dam is taller than 96% of all dams in the United States.

Living Downstream

If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Colorado dam safety program can provide more specific information about emergency planning for this structure.

Search for dams near your address to see all dams in your area with hazard classifications and safety data.

High HazardUnsatisfactory ConditionEmergency Action Plan: Yes

Location

StateColorado
CountyRio Blanco
Nearest CityMilner
River/StreamTrout Creek
Coordinates40.14889, -107.13723

Physical Characteristics

Dam TypeEarth
NID Height72 ft
Dam Height47 ft
Dam Length630 ft
Year Completed1955 (71 years old)

Storage & Hydraulics

NID Storage1,450 acre-ft
Max Storage1,450 acre-ft
Normal Storage987 acre-ft
Surface Area40 acres
Drainage Area12 sq mi
Max Discharge2,460 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeIrrigation
OwnerTOWN OF OAK CREEK (TOM HOLIDAY, DIRECTOR OF PUBLIC
Owner TypeLocal Government
Hazard ClassificationHigh
Condition AssessmentUnsatisfactory
Last Inspection10/04/2022
Emergency Action PlanYes

Identifiers

NID IDCO01015
Federal IDCO01015
More InfoState Dam Safety Program

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