South Fork Blackwater River Dam A-27 is an earth dam located in Johnson County, Missouri, built in 1965. It carries a Low hazard potential classification.
Dam profile
NID height · 26 ft26 ft tall and 560 ft long, taller than 55% 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-27
The primary purpose of South Fork Blackwater River Dam A-27 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.blkwtr.wshd.subdist (local government). It impounds the Tr-w.br.s.fk.blackwater near Kingsville,mo.
The dam stands 26 feet tall and stretches 560 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 147 acre-feet, and collects water from a drainage area of 593 square miles. Completed in 1965, 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 | Johnson |
| Nearest City | Kingsville,mo |
| River/Stream | Tr-w.br.s.fk.blackwater |
| Coordinates | 38.80734, -94.06679 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 24 ft |
| Dam Length | 560 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 147 acre-ft |
| Max Storage | 147 acre-ft |
| Normal Storage | 59 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 593 sq mi |
| Max Discharge | 305 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Grade Stabilization |
| Owner | S.fk.blkwtr.wshd.subdist |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO50242 |
| Federal ID | MO50242 |
| More Info | State Dam Safety Program |