Willow Creek Watershed Dam A- 22
Willow Creek Watershed Dam A- 22 is an earth dam located in Ray County, Missouri, built in 1970. It carries a Low hazard potential classification.
About Willow Creek Watershed Dam A- 22
The primary purpose of Willow Creek Watershed Dam A- 22 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 Subdist (local government). It impounds the Tr-willow Creek near Henrietta.
The dam stands 35 feet tall and stretches 885 feet across, creates a reservoir covering 18 acres, has a maximum storage capacity of 312 acre-feet, and collects water from a drainage area of 650 square miles. Completed in 1970, 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 35 feet, this dam is taller than 82% of dams nationwide.
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Location
| State | Missouri |
| County | Ray |
| Nearest City | Henrietta |
| River/Stream | Tr-willow Creek |
| Coordinates | 39.25885, -94.03268 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 33 ft |
| Dam Length | 885 ft |
| Year Completed | 1970 (56 years old) |
Storage & Hydraulics
| NID Storage | 312 acre-ft |
| Max Storage | 312 acre-ft |
| Normal Storage | 158 acre-ft |
| Surface Area | 18 acres |
| Drainage Area | 650 sq mi |
| Max Discharge | 518 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Grade Stabilization |
| Owner | WILLOW CR WRSD SUBDIST |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO10234 |
| Federal ID | MO10234 |
| More Info | State Dam Safety Program |