Willow Creek Watershed Dam C- 21 is an earth dam located in Ray County, Missouri, built in 1972. It carries a Low hazard potential classification.
Dam profile
NID height · 33 ft33 ft tall and 600 ft long, taller than 76% 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 Willow Creek Watershed Dam C- 21
The primary purpose of Willow Creek Watershed Dam C- 21 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 Willow Cr Wrsd Subdistr (local government). It impounds the Tr-willow Creek near Henrietta.
The dam stands 33 feet tall and stretches 600 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 180 acre-feet, and collects water from a drainage area of 400 square miles. Completed in 1972, 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. The most recent inspection on record was 05/17/1979. That was over 47 years ago.
At 33 feet, this dam is taller than 76% 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 | Ray |
| Nearest City | Henrietta |
| River/Stream | Tr-willow Creek |
| Coordinates | 39.24977, -93.96291 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 33 ft |
| Dam Height | 31 ft |
| Dam Length | 600 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 180 acre-ft |
| Max Storage | 180 acre-ft |
| Normal Storage | 83 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 400 sq mi |
| Max Discharge | 170 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Grade Stabilization |
| Owner | Willow Cr Wrsd Subdistr |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 05/17/1979 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO10238 |
| Federal ID | MO10238 |
| More Info | State Dam Safety Program |