Crane Brook Upper Dam Reservoir Report
Nearby: Tremont Street Dam East Head Pond Dam
Last Updated: December 24, 2025
Crane Brook Upper Dam, located in Carver, Massachusetts, is a privately owned earth dam with a primary purpose of irrigation.
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Summary
The dam stands at a height of 10.5 feet and has a hydraulic height of 7.5 feet, providing a storage capacity of 370 acre-feet. With a drainage area of 3.9 square miles, the dam plays a crucial role in managing water resources in the area.
Managed by the Department of Conservation and Recreation, the Crane Brook Upper Dam is state-regulated and undergoes regular inspections to ensure its structural integrity. Despite its significant hazard potential, the dam is deemed to be in satisfactory condition as of the last assessment in May 2017. With a moderate risk assessment rating of 3, the dam serves as a vital infrastructure for maintaining water supply for irrigation purposes in the region.
For water resource and climate enthusiasts, the Crane Brook Upper Dam represents a key component of the local water management system in Plymouth County, Massachusetts. Its earth structure and uncontrolled spillway highlight the importance of proper maintenance and monitoring to mitigate potential risks and ensure the continued functionality of the dam for irrigation purposes. With its location in a region susceptible to climate variability, the dam serves as a vital resource for water supply management and highlights the intersection of infrastructure, regulation, and environmental conservation in sustainable water resource management.
Dam Length |
1100 |
Dam Height |
10.5 |
River Or Stream |
CRANE BROOK |
Primary Dam Type |
Earth |
Surface Area |
0.06 |
Hydraulic Height |
7.5 |
Drainage Area |
3.9 |
Nid Storage |
370 |
Hazard Potential |
Significant |
Foundations |
Unlisted/Unknown |
Nid Height |
11 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Crane Brook Upper Dam