Matt Brown Dam
Matt Brown Dam is an earth dam located in Union County, Iowa, built in 2019. It carries a Low hazard potential classification.
About Matt Brown Dam
The primary purpose of Matt Brown 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 Matt Brown (private). It impounds the Thompson River near Grand River.
The dam stands 32 feet tall and stretches 330 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 56 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2019, the structure is relatively new.
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 32 feet, this dam is taller than 76% of dams nationwide.
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Location
| State | Iowa |
| County | Union |
| Nearest City | Grand River |
| River/Stream | Thompson River |
| Coordinates | 41.04480, -94.08480 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 32 ft |
| Dam Height | 32 ft |
| Dam Length | 330 ft |
| Year Completed | 2019 (7 years old) |
Storage & Hydraulics
| NID Storage | 56 acre-ft |
| Max Storage | 56 acre-ft |
| Normal Storage | 20 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 14 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Grade Stabilization |
| Owner | Matt Brown |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA04394 |
| Federal ID | IA04394 |
| More Info | State Dam Safety Program |