Northbridge Subdivision Lake Dam Reservoir Report
Last Updated: December 21, 2025
Located in McLean County, Illinois, the Northbridge Subdivision Lake Dam stands as a vital infrastructure designed by the USDA NRCS to reduce flood risks in the region.
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Summary
Completed in 1999, this earth dam spans 950 feet in length and reaches a height of 11 feet, with a storage capacity of 120 acre-feet. Situated on the TRIB SIX MILE CREEK, this dam serves a dual purpose of flood risk reduction and recreation, making it a significant asset for the local community.
Managed by private owners and regulated by the Illinois Department of Natural Resources, the Northbridge Subdivision Lake Dam boasts a low hazard potential and a moderate risk assessment rating. With a spillway width of 32 feet and a maximum discharge capacity of 720 cubic feet per second, this dam is equipped to handle potential overflow events efficiently. Despite its remote location in HUDSON, the dam is subject to regular state inspections and enforcement measures to ensure its structural integrity and public safety.
As a key component in the local water resource management system, the Northbridge Subdivision Lake Dam plays a crucial role in mitigating flood risks and providing recreational opportunities for residents. With a focus on flood risk reduction and a history of successful operation since its completion, this dam stands as a testament to effective collaboration between private owners, regulatory agencies, and design experts in safeguarding the surrounding community from water-related threats.
Year Completed |
1999 |
Dam Length |
950 |
Dam Height |
11 |
River Or Stream |
TRIB SIX MILE CREEK |
Primary Dam Type |
Earth |
Surface Area |
15 |
Drainage Area |
2.97 |
Nid Storage |
120 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
11 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Sugar Creek Near Bloomington
|
23cfs |
Mackinaw River Near Congerville
|
19cfs |
Kickapoo Creek At Waynesville
|
11cfs |
Vermilion River At Pontiac
|
12cfs |
Farm Creek At Farmdale
|
9cfs |
Salt Creek Near Rowell
|
15cfs |
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.
Northbridge Subdivision Lake Dam