Enlargement Of The Shallow

Enlargement Of The Shallow is an earth dam located in Crook County, Wyoming, built in 2008. It carries a Low hazard potential classification and has a fair condition assessment.

About Enlargement Of The Shallow

The primary purpose of Enlargement Of The Shallow is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Sy Ranch (robert Hadley) (private). It impounds the Little Pine Ridge Creek near I-90.

The dam stands 16 feet tall and stretches 1,777 feet across, creates a reservoir covering 35 acres, has a maximum storage capacity of 183 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 2008, the structure is relatively new.

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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 06/28/2023.

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Low HazardFair ConditionEmergency Action Plan: Not Required

Location

StateWyoming
CountyCrook
Nearest CityI-90
River/StreamLittle Pine Ridge Creek
Coordinates44.26389, -104.63972

Physical Characteristics

Dam TypeEarth
NID Height16 ft
Dam Height13 ft
Dam Length1,777 ft
Year Completed2008 (18 years old)

Storage & Hydraulics

NID Storage183 acre-ft
Max Storage183 acre-ft
Normal Storage100 acre-ft
Surface Area35 acres
Drainage Area2 sq mi
Max Discharge1,350 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeFish and Wildlife Pond
OwnerSY RANCH (ROBERT HADLEY)
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentFair
Last Inspection06/28/2023
Emergency Action PlanNot Required

Identifiers

NID IDWY02508
Federal IDWY02508
More InfoState Dam Safety Program

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