Nilan East Dam

High HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

StateMontana
CountyLewis and Clark
Nearest CityAUGUSTA
River/StreamTR-ELK CREEK
Coordinates47.47290, -112.51790

Physical Characteristics

Dam TypeEarth
NID Height51 ft
Dam Height51 ft
Dam Length1,010 ft
Year Completed1951 (75 years old)

Storage & Hydraulics

NID Storage15,600 acre-ft
Max Storage15,600 acre-ft
Normal Storage10,092 acre-ft
Surface Area525 acres
Drainage Area3 sq mi
Max Discharge8,620 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeIrrigation
OwnerSTATE WATER PROJECTS
Owner TypeState
Hazard ClassificationHigh
Condition AssessmentSatisfactory
Last Inspection04/30/2024
Emergency Action PlanYes

Identifiers

NID IDMT00014
Federal IDMT00014
More InfoState Dam Safety Program

Nearby Dams

Nilan North Dam 1.4 mi High J B Long And Company #3 1.7 mi Low Really Red 2.1 mi Low Anderson Lake 3.2 mi Low Porrini 4.6 mi Low J B Long And Company #2 5.8 mi Low Willow Creek Bor Mt-dike 3 7.1 mi High Young Clemons 9.7 mi Low Young Sun 10.7 mi Low Gordan Lightfoot 10.7 mi Low