Black Rock Lime Company Dam Reservoir Report
Nearby: Joseph Lake Dam Lemmons Lake Dam
Last Updated: December 5, 2025
The Black Rock Lime Company Dam, located in BLACKROCK, Arkansas, was completed in 1960 with a primary purpose of "Other." This privately owned Earth dam on the SPRING RIVER-OS stands at a hydraulic height of 7 feet and has a length of 625 feet.
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Summary
The dam has a NID storage capacity of 250 acre-feet and a maximum storage of 250 acre-feet, with a normal storage of 120 acre-feet. Despite its low hazard potential, the dam's condition has not been rated.
The Black Rock Lime Company Dam is under the jurisdiction of the Memphis District of the US Army Corps of Engineers. Despite not being state regulated or permitted, the dam plays a crucial role in water resource management in Lawrence, Arkansas. With its low hazard potential and lack of a condition assessment, there is a need for further evaluation and potentially the development of an Emergency Action Plan to ensure the safety and efficiency of the dam in the face of climate change and water resource challenges.
Year Completed |
1960 |
Dam Length |
625 |
River Or Stream |
SPRING RIVER-OS |
Primary Dam Type |
Earth |
Hydraulic Height |
7 |
Nid Storage |
250 |
Hazard Potential |
Low |
Nid Height |
7 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Black River At Black Rock
|
4290cfs |
Spring River At Imboden
|
558cfs |
Black River At Pocahontas
|
3110cfs |
Elevenpoint River Near Ravenden Springs
|
644cfs |
Spring River At Town Branch Bridge At Hardy
|
401cfs |
Cache River At Egypt
|
21cfs |
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.
Black Rock Lime Company Dam