The State of Cyanobacteria

Cyanobacteria is naturally occurring in freshwater around the world, but in concentrated levels, known as "blooms," it can be toxic to people, pets, and wildlife and threatens everything from water quality to our lake-based economy and property values. Warmer seasonal temperatures and increased pollution from stormwater runoff increases the likelihood of toxic cyanobacteria blooms.

NH Department of Environmental Services monitors cyanobacteria blooms and issues advisories when cyanobacteria levels are high enough to be toxic. Here's a look at how waterways fared this year across the state of New Hampshire:

How to Identify Cyanobacteria Blooms

While blooms are more likely during warmer months, cyanobacteria can even bloom under ice. Blooms can vary in appearance from scum to globules to a swirling "paint spill". The Illinois Environmental Protection Agency has a great gallery of photos illustrating different types of blooms. View them here: Identifying Cyanobacteria Blooms

If You Suspect a Bloom

1. Alert us! Call or text (603) 744-8689 or email Paul@NewfoundLake.org
2. Call or text the NH DES hotline at (603) 848-8094 or email HAB@des.nh.gov.

Until the water is tested and confirmed safe:

• Don’t wade or swim in or drink the water.​ 
• Keep pets and livestock out.
• Wash your hands if you have touched the water.

You can check current beach advisories at: https://www4.des.state.nh.us/WaterShed_BeachMaps/

Newfound has yet to experience a cyanobacteria bloom advisory. The best way to ensure it stays that way is to protect Newfound's water quality. Minimize stormwater pollution on your property and support our work to protect our clean, clear water.

Support Newfound Year-Round

Newfound Lake faces growing threats from climate change and pollution. As lakes around the state grapple with toxic cyanobacteria, degrading water quality, and invasive aquatic species, we're building Newfound's resilience to these challenges with on-the-ground conservation action.

Support our growing initiatives to protect Newfound lake for you, your family, and future generations by donating today.

Dock De-Icers

When used correctly, dock de-icers protect permanent docks and boathouses from winter ice damage. When they aren't properly managed they can actually increase ice damage, create hazardous conditions for recreators, and impact the ecosystem by spurring algae growth. Follow these tips from the Lake Sunapee Protective Association to protect your dock while minimizing the impact on the lake.

Luminary Walk

December 16, 6pm - December 17 9pm

Slim Baker Foundation

301 New Chester Mountain Rd, Bristol, NH

Parents Night Out

December 17, 5-9pm

Tapply-Thompson Community Center

30 N Main St, Bristol, NH

Winter in the Woods

January 22, 2-4pm

Slim Baker Foundation

301 New Chester Mountain Rd, Bristol, NH