O'farrell Dam No. 1

Low Hazard ConditionEmergency Action Plan: Not Required

Location

StateSouth Dakota
CountyGrant
River/StreamTR-N. FORK WHETSTONE
Coordinates45.30601, -96.94591

Physical Characteristics

Dam TypeEarth
NID Height20 ft
Dam Height20 ft
Dam Length400 ft
Year Completed2005 (21 years old)

Storage & Hydraulics

NID Storage88 acre-ft
Max Storage88 acre-ft
Normal Storage35 acre-ft
Surface Area7 acres
Drainage Area3 sq mi
Max Discharge1,070 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeFish and Wildlife Pond
OwnerMARIE O'FARRELL
Owner TypePrivate
Hazard ClassificationLow
Emergency Action PlanNot Required

Identifiers

NID IDSD02586
Federal IDSD02586
More InfoState Dam Safety Program

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