Allen Dam Reservoir Report
Nearby: Gupton Pond Dam Jones Dam
Last Updated: December 13, 2025
Allen Dam, located in Franklin, North Carolina, serves primarily for irrigation purposes on Sandy Creek.
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Summary
This private Earth dam boasts a hydraulic height of 30.3 feet and a structural height of 26.5 feet, with a length of 1050 feet and a storage capacity of 49 acre-feet. Despite being state-regulated, it is not under state jurisdiction or permitting, but remains under regular inspection.
With a hazard potential rated as low and a condition assessment labeled as "Not Rated," Allen Dam has not undergone significant modifications since its last inspection in January 2001. The dam, situated in a picturesque area with a surface area of 4.6 acres, poses no immediate risk, but its emergency action plan and risk management measures are not well-documented. Water resource and climate enthusiasts may find Allen Dam an intriguing case study in private dam ownership and management, with potential for further research and exploration into its environmental impact and sustainability practices.
Dam Length |
1050 |
River Or Stream |
Sandy Creek |
Primary Dam Type |
Earth |
Surface Area |
4.6 |
Hydraulic Height |
30.3 |
Nid Storage |
49 |
Structural Height |
26.5 |
Hazard Potential |
Low |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Tar R At Us 401 At Louisburg
|
57cfs |
Swift Creek At Hilliardston
|
858cfs |
Little Fishing Creek Near White Oak
|
22cfs |
Tar River Near Tar River
|
24cfs |
Neuse River Near Falls
|
69cfs |
Tar River At Nc 97 At Rocky Mount
|
101cfs |
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.
Allen Dam