Gann Lake Dam
Gann Lake Dam is an earth dam located in Johnson County, Missouri, built in 1972. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Gann Lake Dam
The primary purpose of Gann Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is private-owned. It impounds the Trib. To Little Blackwater Cr near Pittsville.
The dam stands 43 feet tall and stretches 650 feet across, creates a reservoir covering 15 acres, has a maximum storage capacity of 275 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1972, the structure is well into its service life at over 50 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 12/02/2020.
At 43 feet, this dam is taller than 89% of dams nationwide.
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Location
| State | Missouri |
| County | Johnson |
| Nearest City | Pittsville |
| River/Stream | Trib. To Little Blackwater Cr |
| Coordinates | 38.81027, -93.93734 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 43 ft |
| Dam Height | 43 ft |
| Dam Length | 650 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 275 acre-ft |
| Max Storage | 275 acre-ft |
| Normal Storage | 275 acre-ft |
| Surface Area | 15 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 98 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 12/02/2020 |
| Emergency Action Plan | No |
Identifiers
| NID ID | MO20637 |
| Federal ID | MO20637 |
| More Info | State Dam Safety Program |