Washington Co Road Dam 35-74-9 is an earth dam located in Washington County, Iowa, built in 2004. It carries a Low hazard potential classification.
Dam profile
NID height · 27 ft27 ft tall and 520 ft long, taller than 59% 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 Washington Co Road Dam 35-74-9
The primary purpose of Washington Co Road Dam 35-74-9 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 Washington County (local government). It impounds the Tr- Honey Creek near Coppock.
The dam stands 27 feet tall and stretches 520 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 132 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 | Washington |
| Nearest City | Coppock |
| River/Stream | Tr- Honey Creek |
| Coordinates | 41.17440, -91.86610 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Dam Length | 520 ft |
| Year Completed | 2004 (22 years old) |
Storage & Hydraulics
| NID Storage | 132 acre-ft |
| Max Storage | 132 acre-ft |
| Normal Storage | 20 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Grade Stabilization |
| Owner | Washington County |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA03871 |
| Federal ID | IA03871 |
| More Info | State Dam Safety Program |