Johns Dam is a dam located in Washington County, Missouri, built in 2000. It carries a Low hazard potential classification.
Dam profile
NID height · 33 ft33 ft tall, taller than 76% 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 Johns Dam
Johns Dam is a dam in Washington, Missouri. The dam is private-owned. It impounds the John's Creek near Potosi.
The dam stands 33 feet tall, creates a reservoir covering 23 acres, has a maximum storage capacity of 483 acre-feet, and collects water from a drainage area of 1,500 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.
At 33 feet, this dam is taller than 76% of dams nationwide.
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Location
| State | Missouri |
| County | Washington |
| Nearest City | Potosi |
| River/Stream | John's Creek |
| Coordinates | 37.88675, -90.98989 |
Physical Characteristics
| NID Height | 33 ft |
| Dam Height | 33 ft |
| Year Completed | 2000 (26 years old) |
Storage & Hydraulics
| NID Storage | 483 acre-ft |
| Max Storage | 483 acre-ft |
| Normal Storage | 253 acre-ft |
| Surface Area | 23 acres |
| Drainage Area | 1,500 sq mi |
Ownership & Safety
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO32085 |
| Federal ID | MO32085 |
| More Info | State Dam Safety Program |