Hambaugh- Martin Ws Str 7 Reservoir Report
Last Updated: December 20, 2025
Hambaugh-Martin Water Structure 7, located in MEREDOSIA, Illinois, is a key flood risk reduction infrastructure managed by the USDA NRCS.
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Summary
The earth dam, completed in 1961, stands at 27 feet tall and stretches 233 feet in length, with a storage capacity of 47 acre-feet. Situated on the TR- ILL RIVER W, this structure plays a vital role in protecting the surrounding area from potential flooding, with a low hazard potential and a moderate risk assessment rating.
Owned by the local government and regulated by the IDNR, Hambaugh-Martin WS Str 7 serves multiple purposes including fire protection, stock, or small fish pond in addition to flood risk reduction. With a drainage area of 0.14 square miles and a maximum discharge of 181 cubic feet per second, this structure plays a critical role in managing water resources in Brown County, Illinois. Despite its age, the dam's condition assessment is not available, indicating a need for further evaluation and maintenance to ensure its continued effectiveness in mitigating flood risks in the region.
The structure features an uncontrolled spillway, outlet gates, and is inspected every 5 years by the Natural Resources Conservation Service. With Darin LaHood (R) serving as the Congressional Representative, the Hambaugh-Martin WS Str 7 represents a collaborative effort between federal, state, and local agencies to safeguard the community against potential flooding events. As climate change continues to impact water resources and weather patterns, the maintenance and enhancement of infrastructure like Hambaugh-Martin WS Str 7 are crucial in building resilience and adapting to a changing climate landscape.
Year Completed |
1961 |
Dam Length |
233 |
Dam Height |
27 |
River Or Stream |
TR- ILL RIVER W |
Primary Dam Type |
Earth |
Surface Area |
3 |
Drainage Area |
0.14 |
Nid Storage |
47 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
27 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
La Moine River At Ripley
|
33cfs |
Illinois River At Valley City
|
2970cfs |
Bay Creek At Pittsfield
|
43cfs |
La Moine River At Colmar
|
17cfs |
Sangamon River Near Oakford
|
356cfs |
Sangamon River At Petersburg
|
146cfs |
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.
Hambaugh- Martin Ws Str 7