County Line Impoundment
Key Takeaway
County Line Impoundment is classified as low hazard in South Dakota. It was completed in 1992 and is 34 years old. Its primary use is fish and wildlife pond.
Physical Details
| Dam Height | 17 ft (taller than 20.2% in SD) |
| Dam Length | 600 ft |
| Dam Type | Earth |
| Max Storage | 96 acre-ft |
| Normal Storage | 42 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 1,090 cfs |
| Year Completed | 1992 (34 years old) |
| NID ID | SD02329 |
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
USDA FS
Federal Government
Nearby Dams
Duwayne Slaathaug #1
Stanley, SD
Low Hazard 28 ftRobert Calkinsor
Stanley, SD
Low Hazard 22 ftLookout
Lyman, SD
Low Hazard 25 ftRichland (Nid)
Jones, SD
Low Hazard 20 ft83 No 2 (Nid)
Lyman, SD
Low Hazard 18 ftStockwater Dam
Stanley, SD
Low Hazard 28 ftSummit
Lyman, SD
Low Hazard 18 ftGrass Creek 727 (Nid)
Stanley, SD
Low Hazard 24 ftFrequently Asked Questions
What is the hazard classification of County Line Impoundment?
County Line Impoundment 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 County Line Impoundment?
County Line Impoundment is owned by USDA FS (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was County Line Impoundment built?
County Line Impoundment was completed in 1992, making it 34 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 County Line Impoundment?
County Line Impoundment serves the following purposes: Fish And Wildlife Pond, 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 County Line Impoundment?
County Line Impoundment has a dam height of 17 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.