Weselmann Dam is an earth dam located in Winneshiek County, Iowa, built in 2021. It carries a Low hazard potential classification.
Dam profile
NID height · 31 ft31 ft tall and 475 ft long, taller than 72% 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 Weselmann Dam
The primary purpose of Weselmann Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Winneshiek County Board of Supervisors (local government). It impounds the Tr-trout Ck near Decorah.
The dam stands 31 feet tall and stretches 475 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 32 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2021, the structure is relatively new.
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 | Iowa |
| County | Winneshiek |
| Nearest City | Decorah |
| River/Stream | Tr-trout Ck |
| Coordinates | 43.19800, -91.82110 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 31 ft |
| Dam Height | 31 ft |
| Dam Length | 475 ft |
| Year Completed | 2021 (5 years old) |
Storage & Hydraulics
| NID Storage | 32 acre-ft |
| Max Storage | 32 acre-ft |
| Normal Storage | 14 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Winneshiek County Board of Supervisors |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA04345 |
| Federal ID | IA04345 |
| More Info | State Dam Safety Program |