Lake Aldersgate Reservoir Report

Last Updated: December 6, 2025

Lake Aldersgate is a privately-owned recreational paradise located in Glocester, Rhode Island.


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Summary

This picturesque lake, fed by the Mosquitohawk Brook tributary, offers a serene escape for water resource and climate enthusiasts. With a dam height of 6 feet and a storage capacity of 80 acre-feet, Lake Aldersgate provides ample opportunities for boating, fishing, and other water-based activities.

Managed by the Rhode Island state regulatory agency, Lake Aldersgate is subject to regular inspections to ensure its safety and compliance with state regulations. Despite its significant hazard potential, the dam's condition is currently rated as "Not Rated," indicating a need for ongoing monitoring and maintenance. The lake's spillway width of 4 feet and maximum discharge of 35 cubic feet per second are key features that contribute to its flood control capabilities.

With a surface area of 19 acres and a normal storage capacity of 66 acre-feet, Lake Aldersgate is a valuable resource for both recreational enjoyment and water management. Its proximity to Providence, Rhode Island, makes it a popular destination for outdoor enthusiasts seeking to connect with nature and appreciate the beauty of this man-made waterbody. As efforts continue to ensure the safety and sustainability of Lake Aldersgate, it remains a vital part of the local ecosystem and a beloved retreat for all who visit.

Dam Length

200

Dam Height

6

River Or Stream

MOSQUITOHAWK BROOK-TRIB

Primary Dam Type

Earth

Surface Area

19

Hydraulic Height

4

Nid Storage

80

Structural Height

6

Hazard Potential

Significant

Nid Height

6
       
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.