Clendaniel Pond Dam Reservoir Report

Last Updated: December 5, 2025

Clendaniel Pond Dam, located in Sussex County, Delaware, is a private-owned structure primarily used for recreational purposes.


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Summary

Built in 1810, this gravity dam stands at a height of 10.21 feet with a length of 445 feet, providing storage of up to 330 acre-feet of water from the Hudson Mill stream. The dam's spillway is controlled with a width of 18 feet, ensuring the safety and regulation of water discharge.

Despite its historical significance and recreational value, Clendaniel Pond Dam poses a high hazard potential, with a very high risk assessment rating. However, the dam's condition assessment is currently listed as 'Not Rated', highlighting the need for further inspection and potential risk management measures. The emergency action plan status is unclear, raising concerns about the preparedness in case of unforeseen events.

Water resource and climate enthusiasts interested in the conservation and management of dams like Clendaniel Pond Dam may find its detailed data intriguing. With its rich history, recreational significance, and potential safety hazards, this structure serves as a focal point for discussions on sustainable water resource management and the importance of regular inspections and risk assessments for dam infrastructure.

Year Completed

1810

Dam Length

445

Dam Height

10.21

River Or Stream

HUDSON MILL

Primary Dam Type

Gravity

Surface Area

23.83

Drainage Area

8.93

Nid Storage

330

Outlet Gates

Other Controlled - 2

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

10
       
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.