Cochenour Lake Dam
Cochenour Lake Dam is an earth dam located in Clark County, Missouri, built in 1972. It carries a Low hazard potential classification.
About Cochenour Lake Dam
The primary purpose of Cochenour 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 Frank Cochenour (private). It impounds the Tr-north Wyaconda River near Granger.
The dam stands 19 feet tall, creates a reservoir covering 10 acres, has a maximum storage capacity of 106 acre-feet, and collects water from a drainage area of 974 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.
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Location
| State | Missouri |
| County | Clark |
| Nearest City | Granger |
| River/Stream | Tr-north Wyaconda River |
| Coordinates | 40.50939, -91.94157 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 19 ft |
| Dam Height | 19 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 106 acre-ft |
| Max Storage | 106 acre-ft |
| Normal Storage | 106 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 974 sq mi |
Ownership & Safety
| Purpose | Debris Control |
| Owner | FRANK COCHENOUR |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO11545 |
| Federal ID | MO11545 |
| More Info | State Dam Safety Program |