Groff Lake Dam
Groff Lake Dam is an earth dam located in Henry County, Missouri, built in 1940. It carries a Low hazard potential classification.
About Groff Lake Dam
The primary purpose of Groff Lake Dam is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Clay Groff (private). It impounds the Tr-sand Creek near Calhoun.
The dam stands 25 feet tall, creates a reservoir covering 5 acres, has a maximum storage capacity of 67 acre-feet, and collects water from a drainage area of 40 square miles. Completed in 1940, the structure is well-established, with more than 75 years of service.
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 | Henry |
| Nearest City | Calhoun |
| River/Stream | Tr-sand Creek |
| Coordinates | 38.50333, -93.74056 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Year Completed | 1940 (86 years old) |
Storage & Hydraulics
| NID Storage | 67 acre-ft |
| Max Storage | 67 acre-ft |
| Normal Storage | 42 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 40 sq mi |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | CLAY GROFF |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO20149 |
| Federal ID | MO20149 |
| More Info | State Dam Safety Program |