Upper South Dam (Fletcher Pond)

Field Descriptions

Dam Name: Upper South Dam
NID ID: MI00202
Longitude: -83.79333
Latitude: 45.02333
County: ALPENA
River: THUNDER BAY
State: MI
Nearest City: LACHINE
Distance: 8.00 miles
Owner Name: THUNDER BAY POWER COMPANY
Owner Type: Public Utility
Private Dam? No
Core: Homogeneous Dam (Position)
Earth (Type)
Estimated (Certainty)
Foundation: SZ
Purposes: Hydroelectric
Year Completed: 1930
Dam Length: 350 feet
Dam Height: 20 feet
Maximum Discharge: 4850 cu ft/sec
Maximum Storage: 55000 acre-feet
Normal Storage: 40100 acre-feet
Surface Area: 7000 acres
Drainage Area: 182 square miles
Hazard Potential: Low
Emergency Action Plan? Not Required By Submitting Agency
Inspection Date: 2010-09-01
Inspection Frequency: 3
State Regulated Dam? No
State Regulating Agency: Michigan DEQ
Spillway Type: Controlled
Spillway Width: 32 feet
Outlet Gates: N4;
Federal Regulatory Agency:
Federal Inspection Agency:
Source Agency:

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