Pettegrew Dam
Key Takeaway
Pettegrew Dam is classified as low hazard in South Dakota. It was completed in 1910 and is 116 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 10 ft (taller than 1.1% in SD) |
| Dam Length | 750 ft |
| Dam Type | Earth |
| Max Storage | 140 acre-ft |
| Normal Storage | 98 acre-ft |
| Max Discharge | 2,275 cfs |
| Year Completed | 1910 (116 years old) |
| NID ID | SD00649 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
LOREE PETTEGREW
Private
Nearby Dams
Felz Dam
Dawes, NE
Low Hazard 17 ftE.E. Pettegrew Dam
Fall River, SD
Low Hazard 14 ftE.E Pettegrew Dam No.2
Fall River, SD
Low Hazard 15 ftPettegrew Pond No.2
Fall River, SD
Low Hazard 13 ftRomey Irrigation Dam
Fall River, SD
Low Hazard 16 ftHald Ranch Pond
Fall River, SD
Low Hazard 16 ftPettegrew Pond No.1
Fall River, SD
Low Hazard 17 ftTrout Dam
Fall River, SD
Low Hazard 22 ftFrequently Asked Questions
What is the hazard classification of Pettegrew Dam?
Pettegrew Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Pettegrew Dam?
Pettegrew Dam is owned by LOREE PETTEGREW (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Pettegrew Dam built?
Pettegrew Dam was completed in 1910, making it 116 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Pettegrew Dam?
Pettegrew Dam serves the following purposes: Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Pettegrew Dam?
Pettegrew Dam has a dam height of 10 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.