Aquatic Invasive Species
New Hampshire AIS
Sticker Requirements 2026
Aquatic invasive species sticker and watercraft inspection requirements for New Hampshire boaters. New Hampshire does not require a paid AIS sticker but has significant AIS concerns, particularly variable milfoil and fanwort in Squam Lake, Lake Winnipesaukee, and other lakes. NH law prohibits transporting aquatic plants on or attached to any watercraft. Voluntary inspection stations are available at many boat launches during summer months.
Inspection Stations Available
2026 AIS Requirements Quick Facts
Verified 2026
Resident Sticker
N/A
No sticker required
Nonresident Sticker
N/A
Check agency for current fees
Inspection?
Not Required
Stations available at ramps
Noncompliance Fine
Up to $1,000 for transporting aquatic plants
For violating AIS requirements
Step-by-Step
How to Comply with AIS Requirements in New Hampshire
Follow these steps to stay compliant with New Hampshire's aquatic invasive species regulations:
1
Check Sticker & Inspection Requirements
New Hampshire does not currently require a mandatory AIS sticker or inspection program. However, all boaters are strongly encouraged to follow Clean, Drain, Dry practices.
2
Purchase Your AIS Sticker (If Required)
No paid AIS sticker purchase is required in New Hampshire at this time. Check back annually as state requirements can change.
3
Practice Clean, Drain, Dry
Before leaving any boat launch - and before launching on a new water body - clean all visible aquatic plants and debris from your boat, trailer, and equipment. Drain all water from bilges, livewells, bait buckets, motor, and other water-holding compartments. Allow the boat to dry for at least 5 days before launching on a different water body, or use a high-pressure, hot-water wash.
4
Cooperate with Inspection Stations
New Hampshire operates watercraft inspection stations at launch sites and on roadways. When you encounter an inspection station, stop and allow the inspector to check your boat. Inspections are typically free and quick - usually under 10 minutes. Refusing an inspection can result in a fine.
Noncompliance fine: Up to $1,000 for transporting aquatic plants.
Requirements
New Hampshire AIS Compliance Requirements
NH law requires all persons to remove all aquatic plants and animals from boats, trailers, and other equipment before leaving any public water access.
Source: New Hampshire Lakes Association / NH DES (www.des.nh.gov).
Requirements verified 2026. Always confirm current AIS requirements directly with the agency before launching.