Griffith Lake Dam is an earth dam located in Ralls County, Missouri, built in 1977. It carries a Low hazard potential classification.
Dam profile
NID height · 26 ft26 ft tall and 440 ft long, taller than 55% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Griffith Lake Dam
The primary purpose of Griffith Lake Dam 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 Newton Griffith (private). It impounds the Tr-salt River near Louisiana.
The dam stands 26 feet tall and stretches 440 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 97 acre-feet, and collects water from a drainage area of 205 square miles. Completed in 1977, the structure is 49 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 | Ralls |
| Nearest City | Louisiana |
| River/Stream | Tr-salt River |
| Coordinates | 39.57894, -91.35915 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 25 ft |
| Dam Length | 440 ft |
| Year Completed | 1977 (49 years old) |
Storage & Hydraulics
| NID Storage | 97 acre-ft |
| Max Storage | 97 acre-ft |
| Normal Storage | 51 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 205 sq mi |
| Max Discharge | 72 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Newton Griffith |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO50422 |
| Federal ID | MO50422 |
| More Info | State Dam Safety Program |