Bullock Lake Dam Reservoir Report
Last Updated: March 19, 2026
Bullock Lake Dam, located in Hamilton, Illinois, is a privately owned structure designed by the USDA NRCS and completed in 1973.
Summary
The dam serves primarily for recreational purposes, with a height of 12 feet and a length of 425 feet. It has a storage capacity of 123 acre-feet and is situated on the TRIB BIG CREEK stream.
Although the dam is classified as low hazard potential, its risk assessment indicates a moderate level of risk. The dam has not undergone a recent condition assessment, but it is inspected every five years by the IDNR. The spillway is uncontrolled, and the outlet gates are also uncontrolled. With its picturesque location and purpose for recreation, Bullock Lake Dam provides a tranquil environment for water resource and climate enthusiasts to explore and enjoy.
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15-Day Weather Outlook
Year Completed |
1973 |
Dam Length |
425 |
Dam Height |
12 |
River Or Stream |
TRIB BIG CREEK |
Primary Dam Type |
Earth |
Nid Storage |
123 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
12 |
Seasonal Comparison
5-Day Hourly Forecast Detail
Nearby Streamflow Levels
Skillet Fork At Wayne City
|
244cfs |
Casey Fork At Mount Vernon
|
13cfs |
Rayse Creek Near Waltonville
|
15cfs |
Big Muddy River At Plumfield
|
560cfs |
Little Wabash River At Carmi
|
10300cfs |
Crab Orchard Creek Near Marion
|
8cfs |
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.
Bullock Lake Dam