Shelby County Roadgrade Dam 1-81-40

Low HazardNot Rated ConditionEmergency Action Plan: Not Required

Location

StateIowa
CountyShelby
Nearest CityMANTENO
River/StreamTR-MILL CREEK
Coordinates41.85730, -95.45970

Physical Characteristics

Dam TypeEarth
NID Height26 ft
Dam Height26 ft
Dam Length1,300 ft
Year Completed1958 (68 years old)

Storage & Hydraulics

NID Storage539 acre-ft
Max Storage539 acre-ft
Normal Storage250 acre-ft
Surface Area21 acres
Drainage Area2 sq mi
Spillway TypeUncontrolled

Ownership & Safety

PurposeOther
OwnerShelby County Board of Supervisors
Owner TypeLocal Government
Hazard ClassificationLow
Condition AssessmentNot Rated
Emergency Action PlanNot Required

Identifiers

NID IDIA00990
Federal IDIA00990
More InfoState Dam Safety Program

Nearby Dams

Lapke Dam 0.1 mi Low Turner Dam 0.4 mi Low Mill Picayune Watershed Site M-24-7 0.5 mi Low Mill Picayune Watershed Site M-24-10 0.5 mi Low Iowa Noname48 0.7 mi Low Mill Picayune Watershed Site M-24-2 0.8 mi Low Mill Picayune Watershed Site M-24-15 0.8 mi Low Mill Picayune Watershed Site M-24-3 0.9 mi Low Mill Picayune Watershed Site M-24-6 1.0 mi Low Mill Picayune Watershed Site M-24-12 1.0 mi Low