Dana Pond Dam Reservoir Report

Last Updated: December 16, 2025

Dana Pond Dam, located in Dalton, New Hampshire, is a privately owned structure designed by USDA NRCS with a primary purpose of recreation.


°F

°F

mph

Wind

%

Humidity

Summary

Built in 1975, this earth dam stands at a height of 20 feet and spans 500 feet in length, providing a storage capacity of 77 acre-feet. The dam regulates TR JOHNS BROOK and has a drainage area of 0.77 square miles.

Despite being classified as having a significant hazard potential, Dana Pond Dam is in satisfactory condition according to a 2012 assessment. Regular inspections are conducted, with the last inspection taking place in June 2019. The dam is state-regulated by NHDES DAM BUREAU, ensuring that it meets all safety and regulatory standards. With a moderate risk assessment rating, the dam poses a manageable level of risk to the surrounding area.

Water resource and climate enthusiasts interested in Dana Pond Dam will find it to be a valuable recreational asset in Coos County, New Hampshire. The dam offers opportunities for outdoor activities in a picturesque setting while also serving a crucial function in regulating water flow. With its manageable risk level and regular inspections, Dana Pond Dam is a well-maintained structure that contributes to the overall water resource management in the region.

Year Completed

1975

Dam Length

500

Dam Height

20

River Or Stream

TR JOHNS BROOK

Primary Dam Type

Earth

Surface Area

8

Drainage Area

0.77

Nid Storage

77

Hazard Potential

Significant

Foundations

Unlisted/Unknown

Nid Height

20
       
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.