102 River Tributaries Dam 4 Reservoir Report
Last Updated: December 17, 2025
Located in Nodaway, Missouri, the 102 River Tributaries Dam 4, also known as 102 Riv Trib Wtrshd #4 Dam, was completed in 1962 by the USDA NRCS as a Grade Stabilization structure on Thill Branch.
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Summary
This earth dam stands at 30 feet high, with a hydraulic height of 28 feet and a length of 425 feet. With a storage capacity of 63 acre-feet, the dam serves the primary purpose of grade stabilization, providing essential flood protection and erosion control within the 115.2 square mile drainage area.
Despite its low hazard potential, the dam has a moderate risk rating due to its age and condition assessment being unreported. The spillway, which is uncontrolled with a width of 40 feet, can discharge up to 605 cubic feet per second. While the dam has not been inspected recently, it remains under the ownership of the local government and continues to operate without state regulation or permitting. With its stone core and soil foundation, the 102 River Tributaries Dam 4 plays a vital role in managing water resources in the region, contributing to the overall water management efforts in Missouri.
Year Completed |
1962 |
Dam Length |
425 |
Dam Height |
28 |
River Or Stream |
THILL BRANCH |
Primary Dam Type |
Earth |
Surface Area |
4 |
Hydraulic Height |
28 |
Drainage Area |
115.2 |
Nid Storage |
63 |
Structural Height |
30 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
102 River Tributaries Dam 4