Variable Milfoil is present in 75 locations in NH including Ossipee, Squam and Winnipesaukee lakes. We should be hyper-vigilant to the p...

While Eurasian Water Milfoil is not common in NH lakes, it is present and we need to be vigilant to its introduction. Once present in a ...

Curly Leaf Pondweed has been found in Lake Winnepausaukee so we should be on the lookout for this exotic in Conway Lake. Curly Leaf Pondw...

Fanwort is currently found in the following waterbodies in New Hampshire: Arlington Mill Reservoir in North Salem, Big Island Pond in Der...

Hydrilla is present in the nearby states of Maine, Massachusetts, Connecticut, and Pennsylvania, and Brazilian elodea is present in Nuts ...

Water Chestnut has invaded portions of the Connecticut and Nashua rivers in New Hampshire and is present in nearby states. Source: Northe...

European Naiad is currently found in 7 locations within New Hampshire! European Naiad is a submersed rooted or floating plant. Leave are...

Photo by Gary Montz (https://www.invasivespeciesinfo.gov/profile/spiny-water-flea) Spiny waterflea is a planktonic crustacean less than 1...

There are over 80 infestations of Chinese Mystery Snail in New Hampshire! http://www.moonlake.org/blog/2011/08/02/chinese-mystery-snail-u...

Zebra mussels are small shellfish marked by alternating light  and dark bands. They are typically two inches or less (roughly the size of...

The Asian clam has been identified in 7 waterbodies within New Hampshire. The Asian clam is a small (<50 mm) lightly-colored bivalve. Th...