Roadside Lake Dam is an earth dam located in Franklin County, Missouri, built in 1950. It carries a Low hazard potential classification.
Dam profile
NID height · 20 ft20 ft tall. 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 Roadside Lake Dam
The primary purpose of Roadside Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by John Weir (private). It impounds the Pin Oak Creek near Washington.
The dam stands 20 feet tall, creates a reservoir covering 12 acres, has a maximum storage capacity of 128 acre-feet, and collects water from a drainage area of 570 square miles. Completed in 1950, 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. The most recent inspection on record was 01/21/1981. That was over 45 years ago.
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Location
| State | Missouri |
| County | Franklin |
| Nearest City | Washington |
| River/Stream | Pin Oak Creek |
| Coordinates | 38.60614, -91.27682 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 128 acre-ft |
| Max Storage | 128 acre-ft |
| Normal Storage | 70 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 570 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | John Weir |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 01/21/1981 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO31047 |
| Federal ID | MO31047 |
| More Info | State Dam Safety Program |