102 River Tributaries Dam 9
102 River Tributaries Dam 9 is an earth dam located in Nodaway County, Missouri, built in 1962. It carries a Low hazard potential classification.
About 102 River Tributaries Dam 9
The primary purpose of 102 River Tributaries Dam 9 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 102 Riv Trib Wrsd Subdis (local government). It impounds the Tr-thill Branch near Arkoe.
The dam stands 32 feet tall and stretches 400 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 51 acre-feet, and collects water from a drainage area of 224 square miles. Completed in 1962, 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.
At 32 feet, this dam is taller than 76% of dams nationwide.
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Location
| State | Missouri |
| County | Nodaway |
| Nearest City | Arkoe |
| River/Stream | Tr-thill Branch |
| Coordinates | 40.37633, -94.80281 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 32 ft |
| Dam Height | 30 ft |
| Dam Length | 400 ft |
| Year Completed | 1962 (64 years old) |
Storage & Hydraulics
| NID Storage | 51 acre-ft |
| Max Storage | 51 acre-ft |
| Normal Storage | 14 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 224 sq mi |
| Max Discharge | 624 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Grade Stabilization |
| Owner | 102 RIV TRIB WRSD SUBDIS |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO10350 |
| Federal ID | MO10350 |
| More Info | State Dam Safety Program |