Clarke's Pond Upper Reservoir Report

Last Updated: December 6, 2025

Clarke's Pond Upper, also known as Seidel's Pond, is a private water resource located in Cranston, Rhode Island.


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Summary

This dam structure on Clarke Brook is state-regulated and has been permitted, inspected, and enforced by the Rhode Island regulatory agency. The primary purpose of the dam is classified as "Other", with an earth dam type standing at a height of 10 feet and a length of 190 feet, providing a storage capacity of 5 acre-feet.

Despite its significant hazard potential and poor condition assessment, Clarke's Pond Upper has a high potential for water storage, with a maximum discharge of 180 cubic feet per second. The dam also features a spillway width of 30 feet and a storage capacity of 5 acre-feet. The last inspection on record was conducted in July 2016, with a regular inspection frequency of every 2 years. While the emergency action plan status and risk management measures are unclear, the dam remains a critical asset for water resource and climate enthusiasts in the area, under the supervision of the Rhode Island regulatory agency.

Dam Length

190

Dam Height

10

River Or Stream

CLARKE BROOK

Primary Dam Type

Earth

Surface Area

1

Nid Storage

5

Hazard Potential

High

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.