Kolb Dam
Kolb Dam is an earth dam located in McPherson County, South Dakota, built in 1960. It carries a Low hazard potential classification.
About Kolb Dam
The primary purpose of Kolb Dam is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Melvin Kolb (private). It impounds the Willow Creek.
The dam stands 9 feet tall and stretches 831 feet across, creates a reservoir covering 21 acres, has a maximum storage capacity of 248 acre-feet, and collects water from a drainage area of 35 square miles. Completed in 1960, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life.
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Location
| State | South Dakota |
| County | McPherson |
| Nearest City | None |
| River/Stream | Willow Creek |
| Coordinates | 45.76858, -98.83057 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 9 ft |
| Dam Height | 9 ft |
| Dam Length | 831 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 248 acre-ft |
| Max Storage | 248 acre-ft |
| Normal Storage | 41 acre-ft |
| Surface Area | 21 acres |
| Drainage Area | 35 sq mi |
| Max Discharge | 2,000 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | MELVIN KOLB |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD02453 |
| Federal ID | SD02453 |
| More Info | State Dam Safety Program |