Little Black River Structure A Dam (Black Lake)

Field Descriptions

Dam Name: Little Black River Structure A
Other Name: STRUCTURE A
NID ID: MI00040
Longitude: -84.53667
Latitude: 45.66667
Map Section: 2238N02W
County: CHEBOYGAN
River: LITTLE BLACK RIVER
State: MI
Nearest City: Cheboygan
Distance: 2 miles
Owner Name: CITY OF CHEBOYGAN
Owner Type: Local Government
Dam Designer: USDA SCS
Private Dam? No
Dam Type: Earth
Core: Homogeneous Dam (Position)
Earth (Type)
Known (Certainty)
Foundation: SK
Purposes: Flood Control
Year Completed: 1962
Year Modified/Mod Type: 0
Dam Length: 350 feet
Dam Height: 33 feet
Structural Height: 34 feet
Hydraulic Height: 27.5 feet
Maximum Discharge: 11200 cu ft/sec
Maximum Storage: 440 acre-feet
Drainage Area: 9.7 square miles
Hazard Potential: High
Emergency Action Plan? Yes
Inspection Date: 2010-08-24
Inspection Frequency: 0
State Regulated Dam? Yes
State Regulating Agency: Michigan DEQ
Spillway Type: Uncontrolled
Spillway Width: 303 feet
Outlet Gates: X
Volume of Dam: 16500 cubic yards
Federal Funding Agency: STRUCTURE A
Federal Design Agency: U.S. Department of Agriculture;
Natural Resources Conservation Service
Formerly Soil Conservation Service (SCS)
Federal Construction Agency: U.S. Department of Agriculture;
Natural Resources Conservation Service
Formerly Soil Conservation Service (SCS)
Federal Inspection Agency: U.S. Department of Agriculture;
Natural Resources Conservation Service
Formerly Soil Conservation Service (SCS)
Source Agency:

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