Mc Donald Subwatershed Site 1 is an earth dam located in Woodbury County, Iowa, built in 1985. It carries a Low hazard potential classification.
Dam profile
NID height · 35 ft35 ft tall and 354 ft long, taller than 80% of U.S. dams with a recorded height. 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 Mc Donald Subwatershed Site 1
The primary purpose of Mc Donald Subwatershed Site 1 is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Woodbury County Swcd (local government). It impounds the Tr-little Sioux River near Mapleton.
The dam stands 35 feet tall and stretches 354 feet across, creates a reservoir covering 12 acres, has a maximum storage capacity of 220 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1985, the structure is 41 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.
At 35 feet, this dam is taller than 80% of dams nationwide.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Iowa |
| County | Woodbury |
| Nearest City | Mapleton |
| River/Stream | Tr-little Sioux River |
| Coordinates | 42.21570, -95.95500 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 35 ft |
| Dam Length | 354 ft |
| Year Completed | 1985 (41 years old) |
Storage & Hydraulics
| NID Storage | 220 acre-ft |
| Max Storage | 220 acre-ft |
| Normal Storage | 107 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Woodbury County Swcd |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA01282 |
| Federal ID | IA01282 |
| More Info | State Dam Safety Program |