Three Mile Reservoir Dam

Significant HazardSatisfactory ConditionEmergency Action Plan: Not Required

Location

StateIowa
CountyUnion
Nearest CityWESTERVILLE
River/StreamTHREE MILE CREEK
Coordinates41.07240, -94.21190

Physical Characteristics

Dam TypeEarth
NID Height63 ft
Dam Height63 ft
Dam Length1,850 ft
Year Completed1995 (31 years old)

Storage & Hydraulics

NID Storage29,950 acre-ft
Max Storage29,950 acre-ft
Normal Storage14,091 acre-ft
Surface Area880 acres
Drainage Area36 sq mi
Spillway TypeUncontrolled

Ownership & Safety

PurposeFlood Risk Reduction
OwnerIowa Department of Natural Resources
Owner TypeState
Hazard ClassificationSignificant
Condition AssessmentSatisfactory
Last Inspection06/10/2020
Emergency Action PlanNot Required

Identifiers

NID IDIA02944
Federal IDIA02944
More InfoState Dam Safety Program

Nearby Dams

Three Mile Creek Watershed Site 29 0.8 mi Low Three Mile Creek Watershed Site 33 1.0 mi Low Union County Roadgrade Dam 29-73-29 1.4 mi Low Three Mile Creek Watershed Site 14-g-1 1.4 mi Low Three Mile Creek Watershed Site 36 1.5 mi Low Twelve Mile Creek Watershed Site 58 1.6 mi Low Three Mile Creek Watershed Site 14-g 1.7 mi Low Three Mile Lake Sediment Dam 1.9 mi Low Double Time Farms Dam 2.4 mi Low Three Mile Creek Watershed Site 14-m 2.5 mi Low