Posy No. 1

Low HazardFair ConditionEmergency Action Plan: Not Required

Location

StateWyoming
CountyJohnson
Nearest CitySUSSEX
River/StreamPOSY CREEK
Coordinates43.51300, -106.69130

Physical Characteristics

Dam TypeEarth
NID Height52 ft
Dam Height51 ft
Dam Length1,788 ft
Year Completed1995 (31 years old)

Storage & Hydraulics

NID Storage2,162 acre-ft
Max Storage2,162 acre-ft
Normal Storage1,537 acre-ft
Surface Area125 acres
Drainage Area15 sq mi
Max Discharge6,650 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeIrrigation
OwnerTTT RANCH CO
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentFair
Last Inspection06/12/2025
Emergency Action PlanNot Required

Identifiers

NID IDWY02048
Federal IDWY02048
More InfoState Dam Safety Program

Nearby Dams

Austin No. 1 1.7 mi Low Will No. 1 3.8 mi Low Leslie No. 2 3.9 mi Low Turkey Springs 4.5 mi Low South Wall 8.0 mi Low South Wall No. 3 8.4 mi Low Big V 10.0 mi Low Bass Pond 10.4 mi Low North Jack Rabbit 10.5 mi Low Robertson 10.9 mi Low