New Hampshire Code of Administrative Rules
Env - Department of Environmental Services
Subtitle Env-Wt - Wetlands Programs
Chapter Env-Wt 500 - PROJECT-SPECIFIC REQUIREMENTS
Part Env-Wt 512 - BREAKWATERS
Section Env-Wt 512.04 - Breakwater Design Requirements

Universal Citation: NH Admin Rules Env-Wt 512.04

Current through Register No. 13, March 27, 2025

In addition to meeting all applicable design requirements established in Env-Wt 300, the following design requirements shall apply to breakwaters:

(a) The height of the breakwater shall not exceed 3 feet above the normal high water line;

(b) The width of the breakwater at its highest point shall not exceed 3 feet;

(c) The side slopes of the breakwater shall be 1:1.5, rise to run, or steeper;

(d) The sides and top of the breakwater shall have irregular surfaces to diffuse wave activity;

(e) The breakwater, when measured from the normal high water line, shall have:

(1) No point more than 50 feet from the normal high water line;

(2) A total length of no more than 70 feet; and

(3) A gap of 6 feet or more between the breakwater and shoreline;

(f) The proposed configuration for the breakwater shall be the least impacting option available for breakwater construction for that site;

(g) No portion of the breakwater, including any portion underwater, shall be placed within 20 feet of an abutting property line or its imaginary extension into the water; and

(h) The breakwater shall be constructed of stone, concrete, wood, or other inert materials, consistent with the individual conditions of each site.

Disclaimer: These regulations may not be the most recent version. New Hampshire may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.