Jaynes Dam
Jaynes Dam is an earth dam located in Ralls County, Missouri, built in 1956. It carries a Low hazard potential classification.
About Jaynes Dam
The primary purpose of Jaynes 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 Howard Jaynes (private). It impounds the Tr Salt River near Ashburn.
The dam stands 30 feet tall, creates a reservoir covering 7 acres, has a maximum storage capacity of 112 acre-feet, and collects water from a drainage area of 131 square miles. Completed in 1956, 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 | Ralls |
| Nearest City | Ashburn |
| River/Stream | Tr Salt River |
| Coordinates | 39.64269, -91.44458 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Year Completed | 1956 (70 years old) |
Storage & Hydraulics
| NID Storage | 112 acre-ft |
| Max Storage | 112 acre-ft |
| Normal Storage | 61 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 131 sq mi |
Ownership & Safety
| Purpose | Debris Control |
| Owner | HOWARD JAYNES |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO10865 |
| Federal ID | MO10865 |
| More Info | State Dam Safety Program |