Curran Lower Reservoir Reservoir Report

Last Updated: December 6, 2025

Curran Lower Reservoir, also known as Spring Lake, is a picturesque water resource located in Cranston, Rhode Island.


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Summary

Managed by the state, this dam is primarily used for fish and wildlife conservation, as well as for recreational activities. Completed in 1950, the reservoir has a gravity dam type with a height of 17 feet and a length of 1300 feet, providing a maximum storage capacity of 250 acre-feet and a normal storage of 200 acre-feet.

With a surface area of 20 acres and a drainage area of 1 square mile, Curran Lower Reservoir plays a crucial role in maintaining the ecological balance of the Clarke Brook ecosystem. Despite being rated as having a high hazard potential, the dam's condition is assessed as fair, with inspections conducted every two years to ensure its structural integrity. The reservoir also boasts a spillway width of 50 feet and a maximum discharge of 650 cubic feet per second, highlighting its importance in flood control and water management for the surrounding area.

For water resource and climate enthusiasts, Curran Lower Reservoir presents a fascinating opportunity to explore the intersection of human intervention and natural ecosystems. By balancing the needs of fish and wildlife conservation with recreational activities, this dam serves as a vital link in the chain of water resource management in Providence, Rhode Island. With its rich history and unique design, the reservoir stands as a testament to the importance of sustainable practices in preserving our water resources for future generations.

Year Completed

1950

Dam Length

1300

Dam Height

17

River Or Stream

CLARKE BROOK

Primary Dam Type

Gravity

Surface Area

20

Hydraulic Height

17

Drainage Area

1

Nid Storage

250

Structural Height

17

Hazard Potential

High

Nid Height

17
       
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.