Ripley County Lake Dam is an earth dam located in Ripley County, Missouri, built in 1958. It carries a Significant hazard potential classification.
Dam profile
NID height · 27 ft27 ft tall and 880 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 Ripley County Lake Dam
The primary purpose of Ripley County Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Usda Fs (federal). It impounds the Briar Creek near Doniphan.
The dam stands 27 feet tall and stretches 880 feet across, creates a reservoir covering 20 acres, has a maximum storage capacity of 206 acre-feet, and collects water from a drainage area of 192 square miles. Completed in 1958, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. The most recent inspection on record was 08/09/1979. That was over 47 years ago.
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Location
| State | Missouri |
| County | Ripley |
| Nearest City | Doniphan |
| River/Stream | Briar Creek |
| Coordinates | 36.65814, -90.95547 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Dam Length | 880 ft |
| Year Completed | 1958 (68 years old) |
Storage & Hydraulics
| NID Storage | 206 acre-ft |
| Max Storage | 206 acre-ft |
| Normal Storage | 160 acre-ft |
| Surface Area | 20 acres |
| Drainage Area | 192 sq mi |
| Max Discharge | 184 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Usda Fs |
| Owner Type | Federal |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 08/09/1979 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO30053 |
| Federal ID | MO30053 |
| More Info | State Dam Safety Program |