Ryan Lake Dam
Ryan Lake Dam is an earth dam located in Jefferson County, Missouri, built in 1961. It carries a Low hazard potential classification.
About Ryan Lake Dam
The primary purpose of Ryan Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Everett L Ryan (private). It impounds the Tr To Calvey Creek near Pacific.
The dam stands 31 feet tall, creates a reservoir covering 2 acres, has a maximum storage capacity of 33 acre-feet, and collects water from a drainage area of 13 square miles. Completed in 1961, 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.
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Location
| State | Missouri |
| County | Jefferson |
| Nearest City | Pacific |
| River/Stream | Tr To Calvey Creek |
| Coordinates | 38.30592, -90.73376 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 31 ft |
| Dam Height | 31 ft |
| Year Completed | 1961 (65 years old) |
Storage & Hydraulics
| NID Storage | 33 acre-ft |
| Max Storage | 33 acre-ft |
| Normal Storage | 18 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 13 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | EVERETT L RYAN |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO30417 |
| Federal ID | MO30417 |
| More Info | State Dam Safety Program |