Cottonwood Creek Lower

Significant HazardFair ConditionEmergency Action Plan: Not Required

Location

StateIdaho
CountyAda
Nearest CityBOISE
River/StreamCOTTONWOOD CREEK BOISE RIVER
Coordinates43.61560, -116.18580

Physical Characteristics

NID Height15 ft
Dam Height15 ft
Dam Length1,710 ft
Year Completed1961 (65 years old)

Storage & Hydraulics

NID Storage88 acre-ft
Normal Storage88 acre-ft
Surface Area9 acres
Drainage Area16 sq mi
Max Discharge3,540 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeFlood Risk Reduction
Owner TypeLocal Government
Hazard ClassificationSignificant
Condition AssessmentFair
Last Inspection09/11/2018
Emergency Action PlanNot Required

Identifiers

NID IDID00477
Federal IDID00477
More InfoState Dam Safety Program

Nearby Dams

Cottonwood Creek Middle 0.1 mi Significant Cottonwood Creek Upper 0.2 mi Significant Crane Gulch East Dam 3.0 mi Significant Crane Gulch Main Fork 4.1 mi Significant Stewart Gulch Main Fork 4.3 mi Significant Stewart Gulch North Fork 4.6 mi Significant Barber 5.0 mi Significant Boise River Diversion Dam 7.1 mi High Hidden Springs Cell 3a 7.7 mi Significant Lucky Peak Dam 9.0 mi High