New Hampshire Statewide Rule
New Hampshire Shoreland Water Quality Protection Act
Key Facts
- Statute
- RSA 483-B
- Jurisdiction
- 250 feet from waters
- Setback
- 50 feet typical
- Impervious cap
- 30%
Summary
New Hampshire RSA 483-B establishes statewide minimum standards for development within 250 feet of public waters, including the Atlantic coast, lakes, ponds, and fourth-order streams, preempting weaker local rules.
Any boathouse constructed after July 1, 2025, and located over public waters shall not exceed a structural height of 18 feet, have no second floor, and minimize storage to accommodate only those items, such as life-jackets, paddles, and rigging, reasonably related to the use of a boat.
Full Breakdown
The Shoreland Water Quality Protection Act (RSA 483-B) creates a 250-foot protected shoreland from the reference line of public waters. Within this jurisdiction, NHDES regulates impervious surface limits (generally 30%), vegetation removal, septic setbacks, and structural setbacks (typically 50 feet). A Shoreland Permit from NHDES is required for most new structures, expansions, and significant tree cutting in the buffer. The Act sets minimum standards; municipalities may adopt stricter shoreland rules but cannot weaken state thresholds. The Act covers coastal Rockingham County waters in addition to inland lakes and rivers.
Violations & Penalties
Violations carry administrative fines up to $2,000 per day, mandatory restoration of vegetative buffers, and possible removal of unpermitted structures.
Frequently Asked Questions
What waters are protected under the Shoreland Act?
Can I cut trees in the protected shoreland?
Sources
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