Louisa County Roadgrade Dam 24-74-3 is an earth dam located in Louisa County, Iowa, built in 1989. It carries a Low hazard potential classification.
Dam profile
NID height · 28 ft28 ft tall and 280 ft long, taller than 62% 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 Louisa County Roadgrade Dam 24-74-3
Louisa County Roadgrade Dam 24-74-3 is a dam in Louisa, Iowa. The dam is owned by Lousia County Board of Supervisors (local government). It impounds the Tr- Iowa River near Oakville.
The dam stands 28 feet tall and stretches 280 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 48 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1989, the structure is 37 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. The most recent inspection on record was 06/03/1999. That was over 27 years ago.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Iowa |
| County | Louisa |
| Nearest City | Oakville |
| River/Stream | Tr- Iowa River |
| Coordinates | 41.19000, -91.13990 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 280 ft |
| Year Completed | 1989 (37 years old) |
Storage & Hydraulics
| NID Storage | 48 acre-ft |
| Max Storage | 48 acre-ft |
| Normal Storage | 7 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | Lousia County Board of Supervisors |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 06/03/1999 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA02469 |
| Federal ID | IA02469 |
| More Info | State Dam Safety Program |