Sprowls Dam is an earth dam located in Polk County, Missouri, built in 1973. It carries a Significant hazard potential classification.
Dam profile
NID height · 25 ft25 ft tall and 605 ft long, taller than 50% 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 Sprowls Dam
The primary purpose of Sprowls Dam is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by J a Sprowls (private). It impounds the Tr-brush Creek near Humansville.
The dam stands 25 feet tall and stretches 605 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 76 acre-feet, and collects water from a drainage area of 90 square miles. Completed in 1973, 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.
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Location
| State | Missouri |
| County | Polk |
| Nearest City | Humansville |
| River/Stream | Tr-brush Creek |
| Coordinates | 37.77295, -93.55501 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 24 ft |
| Dam Length | 605 ft |
| Year Completed | 1973 (53 years old) |
Storage & Hydraulics
| NID Storage | 76 acre-ft |
| Max Storage | 76 acre-ft |
| Normal Storage | 20 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 90 sq mi |
| Max Discharge | 199 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | J a Sprowls |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | No |
Identifiers
| NID ID | MO20413 |
| Federal ID | MO20413 |
| More Info | State Dam Safety Program |