Delzer No.3
Key Takeaway
Delzer No.3 is classified as low hazard in South Dakota. It was completed in 1974 and is 52 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 23 ft (taller than 49.8% in SD) |
| Dam Length | 897 ft |
| Dam Type | Earth |
| Max Storage | 305 acre-ft |
| Normal Storage | 244 acre-ft |
| Max Discharge | 872 cfs |
| Year Completed | 1974 (52 years old) |
| NID ID | SD02197 |
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
SPEARFISH VALLEY RANCH
Private
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Low Hazard 21 ftFrequently Asked Questions
What is the hazard classification of Delzer No.3?
Delzer No.3 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 Delzer No.3?
Delzer No.3 is owned by SPEARFISH VALLEY RANCH (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Delzer No.3 built?
Delzer No.3 was completed in 1974, making it 52 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 Delzer No.3?
Delzer No.3 serves the following purposes: Irrigation, 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 Delzer No.3?
Delzer No.3 has a dam height of 23 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.