Nilan North Dam

High HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

StateMontana
CountyLewis and Clark
Nearest CitySUN RIVER
River/StreamTR-WILLOW CREEK
Coordinates47.48690, -112.53890

Physical Characteristics

Dam TypeEarth
NID Height54 ft
Dam Height54 ft
Dam Length530 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 Discharge395 cfs
Spillway TypeUncontrolled

Ownership & Safety

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

Identifiers

NID IDMT03206
Federal IDMT03206
More InfoState Dam Safety Program

Nearby Dams

J B Long And Company #3 1.2 mi Low Nilan East Dam 1.4 mi High Really Red 1.4 mi Low Anderson Lake 2.3 mi Low Porrini 3.7 mi Low J B Long And Company #2 6.1 mi Low Willow Creek Bor Mt-dike 3 7.1 mi High Young Clemons 9.7 mi Low Young Sun 10.1 mi Low Gordan Lightfoot 10.2 mi Low