Swan Lake Dam is an earth dam located in Carroll County, Iowa, built in 1935. It carries a Low hazard potential classification.
Dam profile
NID height · 10 ft10 ft tall and 900 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Swan Lake Dam
The primary purpose of Swan Lake 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 Iowa Department of Natural Resources (state). It impounds the Trib to Middle Raccoon near Coon Rapids.
The dam stands 10 feet tall and stretches 900 feet across, creates a reservoir covering 130 acres, has a maximum storage capacity of 600 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1935, the structure is well-established, with more than 75 years of service.
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. The most recent inspection on record was 12/31/1993. That was over 32 years ago.
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Location
| State | Iowa |
| County | Carroll |
| Nearest City | Coon Rapids |
| River/Stream | Trib to Middle Raccoon |
| Coordinates | 42.03360, -94.84110 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 900 ft |
| Year Completed | 1935 (91 years old) |
Storage & Hydraulics
| NID Storage | 600 acre-ft |
| Max Storage | 600 acre-ft |
| Normal Storage | 440 acre-ft |
| Surface Area | 130 acres |
| Drainage Area | 1 sq mi |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | Iowa Department of Natural Resources |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 12/31/1993 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA04222 |
| Federal ID | IA04222 |
| More Info | State Dam Safety Program |