Polowniak Dam
Polowniak Dam is an earth dam located in Sullivan County, Missouri, built in 1995. It carries a Low hazard potential classification.
About Polowniak Dam
The primary purpose of Polowniak Dam 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 Brian Polowniak (private). It impounds the Locust Creek near Cora.
The dam stands 29 feet tall and stretches 409 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 34 acre-feet, and collects water from a drainage area of 396 square miles. Completed in 1995, the structure is 31 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.
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Location
| State | Missouri |
| County | Sullivan |
| Nearest City | Cora |
| River/Stream | Locust Creek |
| Coordinates | 40.13041, -93.10927 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 29 ft |
| Dam Height | 29 ft |
| Dam Length | 409 ft |
| Year Completed | 1995 (31 years old) |
Storage & Hydraulics
| NID Storage | 34 acre-ft |
| Max Storage | 34 acre-ft |
| Normal Storage | 26 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 396 sq mi |
| Max Discharge | 4 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Grade Stabilization |
| Owner | BRIAN POLOWNIAK |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO50196 |
| Federal ID | MO50196 |
| More Info | State Dam Safety Program |