South Fork Blackwater River Dam Lt-67 is an earth dam located in Johnson County, Missouri, built in 1984. It carries a Low hazard potential classification.
Dam profile
NID height · 36 ft36 ft tall and 350 ft long, taller than 82% of U.S. dams with a recorded height. 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 South Fork Blackwater River Dam Lt-67
The primary purpose of South Fork Blackwater River Dam Lt-67 is grade stabilization. Grade stabilization dams prevent erosion by reducing the slope and velocity of water flowing through a channel. They're commonly used to stop gullies from deepening and to protect downstream land and infrastructure. The dam is owned by Edna Miller (private). It impounds the Tr-s.fk. Blackwater near Warrensbury, Mo.
The dam stands 36 feet tall and stretches 350 feet across, creates a reservoir covering 26 acres, has a maximum storage capacity of 74 acre-feet, and collects water from a drainage area of 170 square miles. Completed in 1984, the structure is 42 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.
At 36 feet, this dam is taller than 82% of dams nationwide.
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Location
| State | Missouri |
| County | Johnson |
| Nearest City | Warrensbury, Mo |
| River/Stream | Tr-s.fk. Blackwater |
| Coordinates | 38.77793, -93.92165 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 36 ft |
| Dam Height | 34 ft |
| Dam Length | 350 ft |
| Year Completed | 1984 (42 years old) |
Storage & Hydraulics
| NID Storage | 74 acre-ft |
| Max Storage | 74 acre-ft |
| Normal Storage | 22 acre-ft |
| Surface Area | 26 acres |
| Drainage Area | 170 sq mi |
| Max Discharge | 75 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Grade Stabilization |
| Owner | Edna Miller |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO50234 |
| Federal ID | MO50234 |
| More Info | State Dam Safety Program |