Ammons Roadgrade Structure
Ammons Roadgrade Structure is an earth dam located in Monroe County, Iowa, built in 2004. It carries a Low hazard potential classification.
About Ammons Roadgrade Structure
The primary purpose of Ammons Roadgrade Structure 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 Monroe County (local government). It impounds the Tr- Moffatt Creek near Maryville.
The dam stands 30 feet tall and stretches 850 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 120 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2004, 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.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Iowa |
| County | Monroe |
| Nearest City | Maryville |
| River/Stream | Tr- Moffatt Creek |
| Coordinates | 40.91560, -92.95560 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 850 ft |
| Year Completed | 2004 (22 years old) |
Storage & Hydraulics
| NID Storage | 120 acre-ft |
| Max Storage | 120 acre-ft |
| Normal Storage | 27 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Grade Stabilization |
| Owner | Monroe County |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA03740 |
| Federal ID | IA03740 |
| More Info | State Dam Safety Program |