Glencliff Road Detention Basin Dam Reservoir Report

Last Updated: December 6, 2025

Located in Manlius, New York, the Glencliff Road Detention Basin Dam stands as a crucial structure for flood risk reduction along the TR-Sweet Road stream.


°F

°F

mph

Wind

%

Humidity

Summary

Built in 1977, this earth dam stands at a height of 13 feet and spans a length of 148 feet, providing a storage capacity of 12 acre-feet. With a significant hazard potential, the dam has been assessed as satisfactory in condition, ensuring its effectiveness in mitigating potential flooding events in the region.

Managed by the local government and regulated by the New York State Department of Environmental Conservation, the dam is subject to regular inspections to ensure its structural integrity. In the event of an emergency, however, the absence of an Emergency Action Plan raises concerns about the preparedness for unforeseen events. Despite this, the dam continues to serve its primary purpose of reducing flood risks in the area, with a moderate risk assessment rating indicating a level of preparedness for potential hazards.

With a spillway width of 40 feet and a maximum discharge capacity of 907 cubic feet per second, the Glencliff Road Detention Basin Dam exemplifies the importance of proper infrastructure for water resource management and climate resilience. As climate change continues to impact precipitation patterns and increase the frequency of extreme weather events, structures like this play a vital role in protecting communities and infrastructure from the devastating effects of flooding.

Year Completed

1977

Dam Length

148

Dam Height

13

River Or Stream

TR-SWEET ROAD

Primary Dam Type

Earth

Drainage Area

2.37

Nid Storage

12

Hazard Potential

Significant

Nid Height

13
       
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.