Imp No.1 Reservoir Report

Last Updated: December 5, 2025

Imp No.1 is a private dam located in Jefferson County, Alabama, specifically in the city of BESSIE JUNCTION.


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Summary

It serves the primary purpose of storing tailings, with a maximum storage capacity of 250 acre-feet. The dam has a height of 100 feet and a drainage area of 0.08 square miles, with a maximum discharge capacity of 285 cubic feet per second. Despite being uncontrolled, the spillway type is designated as 'Uncontrolled', contributing to its low hazard potential.

With a moderate risk assessment rating of 3, Imp No.1 has not been rated for its condition assessment, emergency action plan preparedness, or adherence to guidelines. The dam has not undergone any recent modifications and does not have associated structures. Owned privately, the dam does not fall under state jurisdiction or regulation, with no state permitting, inspection, or enforcement activities involved. The dam's risk management measures, inundation maps, and emergency contacts are not updated or prepared, highlighting the need for increased attention to its safety and maintenance in the face of potential climate challenges and water resource management concerns.

Dam Height

100

Drainage Area

0.08

Nid Storage

250

Hazard Potential

Low

Nid Height

100
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.