Willow Creek Watershed Dam B-22 is an earth dam located in Ray County, Missouri, built in 1971. It carries a Low hazard potential classification.
Dam profile
NID height · 33 ft33 ft tall, 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 B-22
The primary purpose of Willow Creek Watershed Dam B-22 is debris control. The dam is designed to catch sediment, rocks, and debris carried by flowing water — particularly important in areas prone to mudslides or heavy erosion. The dam is owned by Willow Cr Wtrshd Sbdstrt (local government). It impounds the Tr-willow Cr near Henrietta.
The dam stands 33 feet tall, creates a reservoir covering 7 acres, has a maximum storage capacity of 124 acre-feet, and collects water from a drainage area of 110 square miles. Completed in 1971, 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 33 feet, this dam is taller than 76% of dams nationwide.
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Location
| State | Missouri |
| County | Ray |
| Nearest City | Henrietta |
| River/Stream | Tr-willow Cr |
| Coordinates | 39.27098, -94.00025 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 33 ft |
| Dam Height | 33 ft |
| Year Completed | 1971 (55 years old) |
Storage & Hydraulics
| NID Storage | 124 acre-ft |
| Max Storage | 124 acre-ft |
| Normal Storage | 58 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 110 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Debris Control |
| Owner | Willow Cr Wtrshd Sbdstrt |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO11965 |
| Federal ID | MO11965 |
| More Info | State Dam Safety Program |