South Fork Blackwater River Dam A-26 is an earth dam located in Johnson County, Missouri, built in 1966. It carries a Low hazard potential classification.
Dam profile
NID height · 27 ft27 ft tall and 1,010 ft long, taller than 59% 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 A-26
The primary purpose of South Fork Blackwater River Dam A-26 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 S.fk.bkwtr.wshd.subdist (private). It impounds the Tr-w.br.s.fk.blackwater near Kingsville,mo.
The dam stands 27 feet tall and stretches 1,010 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 247 acre-feet, and collects water from a drainage area of 650 square miles. Completed in 1966, 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. The most recent inspection on record was 06/26/1980. That was over 46 years ago.
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Location
| State | Missouri |
| County | Johnson |
| Nearest City | Kingsville,mo |
| River/Stream | Tr-w.br.s.fk.blackwater |
| Coordinates | 38.75408, -94.07595 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 25 ft |
| Dam Length | 1,010 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 247 acre-ft |
| Max Storage | 247 acre-ft |
| Normal Storage | 98 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 650 sq mi |
| Max Discharge | 240 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Grade Stabilization |
| Owner | S.fk.bkwtr.wshd.subdist |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 06/26/1980 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO20073 |
| Federal ID | MO20073 |
| More Info | State Dam Safety Program |