Jasper County Roadgrade Dam 15-81-20 is an earth dam located in Jasper County, Iowa, built in 2005. It carries a Low hazard potential classification.
Dam profile
NID height · 38 ft38 ft tall and 830 ft long, taller than 84% 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 Jasper County Roadgrade Dam 15-81-20
The primary purpose of Jasper County Roadgrade Dam 15-81-20 is grade stabilization. Grade stabilization dams prevent erosion by reducing the slope and velocity of water flowing through a channel. They're commonly used to stop gullies from deepening and to protect downstream land and infrastructure. The dam is owned by Jasper County Board of Supervisors (local government). It impounds the Tr- Turkey Creek near Reasnor.
The dam stands 38 feet tall and stretches 830 feet across, creates a reservoir covering 20 acres, has a maximum storage capacity of 480 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2005, 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.
At 38 feet, this dam is taller than 84% of dams nationwide.
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Location
| State | Iowa |
| County | Jasper |
| Nearest City | Reasnor |
| River/Stream | Tr- Turkey Creek |
| Coordinates | 41.82170, -93.17170 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 38 ft |
| Dam Height | 38 ft |
| Dam Length | 830 ft |
| Year Completed | 2005 (21 years old) |
Storage & Hydraulics
| NID Storage | 480 acre-ft |
| Max Storage | 480 acre-ft |
| Normal Storage | 177 acre-ft |
| Surface Area | 20 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Grade Stabilization |
| Owner | Jasper County Board of Supervisors |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA03690 |
| Federal ID | IA03690 |
| More Info | State Dam Safety Program |