Lower Valley is a private concrete gravity dam located in Claremont, New Hampshire, on the Sugar River. Completed in 1921, this hydroelectric facility serves multiple purposes, including water supply and hydroelectric power generation. With a dam height of 32.5 feet and a length of 145 feet, Lower Valley has a storage capacity of 24 acre-feet and a drainage area of 252 square miles.

Managed by the NHDES Dam Bureau and regulated by the Federal Energy Regulatory Commission, Lower Valley poses a significant hazard potential due to its uncontrolled spillway and moderate risk assessment. The dam has one other controlled outlet gate and a spillway width of 91 feet. While its condition assessment is not available, inspections are conducted every two years to ensure its structural integrity and safety.

For water resource and climate enthusiasts, Lower Valley represents a vital infrastructure for sustainable energy production and water management in the region. Its historical significance, combined with its modern regulatory oversight and risk management measures, make it an important asset for the community and a focal point for ongoing environmental stewardship efforts in New Hampshire's Sullivan County.