Nancy Inderwiesen Dam
Nancy Inderwiesen Dam is an earth dam located in Daviess County, Missouri, built in 1989. It carries a Low hazard potential classification.
About Nancy Inderwiesen Dam
The primary purpose of Nancy Inderwiesen 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 Nancy Inderwiesen (private). It impounds the Tr-big Creek near Gallatin.
The dam stands 27 feet tall and stretches 519 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 34 acre-feet, and collects water from a drainage area of 30 square miles. Completed in 1989, the structure is 37 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. The most recent inspection on record was 09/30/1989. That was over 36 years ago.
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Location
| State | Missouri |
| County | Daviess |
| Nearest City | Gallatin |
| River/Stream | Tr-big Creek |
| Coordinates | 39.91631, -94.04740 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 25 ft |
| Dam Length | 519 ft |
| Year Completed | 1989 (37 years old) |
Storage & Hydraulics
| NID Storage | 34 acre-ft |
| Max Storage | 34 acre-ft |
| Normal Storage | 8 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 30 sq mi |
| Max Discharge | 12 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Grade Stabilization |
| Owner | NANCY INDERWIESEN |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 09/30/1989 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO51235 |
| Federal ID | MO51235 |
| More Info | State Dam Safety Program |