Robertson Lake Dam is an earth dam located in Clark County, Missouri, built in 1964. 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 Robertson Lake Dam
The primary purpose of Robertson Lake Dam is debris control. The dam is designed to catch sediment, rocks, and debris carried by flowing water — particularly important in areas prone to mudslides or heavy erosion. The dam is owned by James B Robertson (private). It impounds the Tr-musko Br near Wyaconda.
The dam stands 20 feet tall, creates a reservoir covering 10 acres, has a maximum storage capacity of 107 acre-feet, and collects water from a drainage area of 105 square miles. Completed in 1964, 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 | Clark |
| Nearest City | Wyaconda |
| River/Stream | Tr-musko Br |
| Coordinates | 40.38538, -91.93857 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 107 acre-ft |
| Max Storage | 107 acre-ft |
| Normal Storage | 60 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 105 sq mi |
Ownership & Safety
| Purpose | Debris Control |
| Owner | James B Robertson |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO10081 |
| Federal ID | MO10081 |
| More Info | State Dam Safety Program |