Dry Muddy

Dry Muddy is an earth dam located in Natrona County, Wyoming, built in 1933. It carries a Low hazard potential classification and has a poor condition assessment.

About Dry Muddy

The primary purpose of Dry Muddy is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Kro Ventures, Attn: Karen Overton (private). It impounds the Dry Muddy Creek near Big Muddy Oil Field.

The dam stands 19 feet tall and stretches 800 feet across, creates a reservoir covering 32 acres, and has a maximum storage capacity of 401 acre-feet. Completed in 1933, the structure is well-established, with more than 75 years of service.

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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 08/09/2021.

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Low HazardPoor ConditionEmergency Action Plan: Not Required

Location

StateWyoming
CountyNatrona
Nearest CityBig Muddy Oil Field
River/StreamDry Muddy Creek
Coordinates42.83240, -106.16510

Physical Characteristics

Dam TypeEarth
NID Height19 ft
Dam Height19 ft
Dam Length800 ft
Year Completed1933 (93 years old)

Storage & Hydraulics

NID Storage401 acre-ft
Max Storage401 acre-ft
Normal Storage213 acre-ft
Surface Area32 acres
Spillway TypeUncontrolled

Ownership & Safety

PurposeIrrigation
OwnerKRO VENTURES, ATTN: KAREN OVERTON
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentPoor
Last Inspection08/09/2021
Emergency Action PlanNot Required

Identifiers

NID IDWY00237
Federal IDWY00237
More InfoState Dam Safety Program

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