Sheep Davis Road Dam Reservoir Report
Nearby: Turtle Pond Dam Garvins Falls
Last Updated: December 19, 2025
Sheep Davis Road Dam, located in Concord, New Hampshire, was completed in 1990 for the primary purpose of flood risk reduction.
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Summary
This earth dam stands at a height of 24.3 feet and has a length of 250 feet, providing a storage capacity of 1861 acre-feet. With a low hazard potential and a fair condition assessment as of October 2017, the dam is under the jurisdiction of the NHDES Dam Bureau and is subject to state regulation, inspection, and enforcement.
The dam's spillway type is uncontrolled, with a width of 4 feet, and it has a maximum discharge capacity of 213 cubic feet per second. The drainage area for the dam is 0.87 square miles, with a normal storage capacity of 13 acre-feet. Despite its moderate risk assessment rating of 3, the Sheep Davis Road Dam has not been modified in recent years and is considered to meet emergency action plan guidelines. With Ann M. Kuster as the Congressional representative for the area, this dam plays a vital role in protecting the surrounding community from potential flooding events.
Overall, Sheep Davis Road Dam serves as a crucial infrastructure for flood risk reduction in Merrimack County, New Hampshire. With its strategic location and design features, the dam provides essential protection against potential inundation events while maintaining a fair condition and low hazard potential. As climate change continues to impact water resources and weather patterns, the maintenance and oversight of dams like Sheep Davis Road are essential in ensuring the safety and resilience of local communities in the face of changing environmental conditions.
Year Completed |
1990 |
Dam Length |
250 |
Dam Height |
24.3 |
River Or Stream |
NA |
Primary Dam Type |
Earth |
Surface Area |
12 |
Drainage Area |
0.87 |
Nid Storage |
1861 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
24 |
Seasonal Comparison
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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.
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