Wellington Nap Watrshed Site H-21 Dam is an earth dam located in Lafayette County, Missouri, built in 1967. It carries a Low hazard potential classification.
Dam profile
NID height · 34 ft34 ft tall, taller than 78% 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 Wellington Nap Watrshed Site H-21 Dam
The primary purpose of Wellington Nap Watrshed Site H-21 Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Lafayette Soil & Water (local government). It impounds the Tr to Missouri River near Napoleon.
The dam stands 34 feet tall, creates a reservoir covering 6 acres, has a maximum storage capacity of 109 acre-feet, and collects water from a drainage area of 160 square miles. Completed in 1967, the structure is well into its service life at over 50 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.
At 34 feet, this dam is taller than 78% of dams nationwide.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Missouri |
| County | Lafayette |
| Nearest City | Napoleon |
| River/Stream | Tr to Missouri River |
| Coordinates | 39.11954, -94.09931 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Height | 34 ft |
| Year Completed | 1967 (59 years old) |
Storage & Hydraulics
| NID Storage | 109 acre-ft |
| Max Storage | 109 acre-ft |
| Normal Storage | 60 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 160 sq mi |
| Spillway Type | None |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Lafayette Soil & Water |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO11226 |
| Federal ID | MO11226 |
| More Info | State Dam Safety Program |