East Fork Grand River Dam H- 31
East Fork Grand River Dam H- 31 is an earth dam located in Harrison County, Missouri, built in 2000. It carries a Low hazard potential classification.
About East Fork Grand River Dam H- 31
The primary purpose of East Fork Grand River Dam H- 31 is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Harrison County Swcd (local government). It impounds the Big Rock Creek near Denver.
The dam stands 30 feet tall and stretches 540 feet across, creates a reservoir covering 8 acres, has a maximum storage capacity of 112 acre-feet, and collects water from a drainage area of 330 square miles. Completed in 2000, the structure is 26 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 11/01/2000. That was over 25 years ago.
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Location
| State | Missouri |
| County | Harrison |
| Nearest City | Denver |
| River/Stream | Big Rock Creek |
| Coordinates | 40.49110, -94.20761 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 27 ft |
| Dam Length | 540 ft |
| Year Completed | 2000 (26 years old) |
Storage & Hydraulics
| NID Storage | 112 acre-ft |
| Max Storage | 112 acre-ft |
| Normal Storage | 33 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 330 sq mi |
| Max Discharge | 141 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | HARRISON COUNTY SWCD |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 11/01/2000 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO51289 |
| Federal ID | MO51289 |
| More Info | State Dam Safety Program |