Cyanobacteria blooms threaten New Hampshire lake as water quality deteriorates

A 350-acre New Hampshire lake faces ecological collapse from cyanobacteria growth that began in 2009 and intensified sharply by 2020, illustrating freshwater degradation risks tied to climate and nutrient pollution.

First covered Aug 4, 2026 · 2:57 PM PT · 1 article

Cyanobacteria blooms threaten New Hampshire lake as water quality deteriorates — Image via heatmap.news

Coverage

22h Heatmap News How Cyanobacteria Swamped New Hampshire — Life is a constant process of dying — even for lakes. For Lake Kanasatka, a 350-acre body of water born when the glaciers raked their retreat into the bedrock…

Primary sources

epa.gov National Lakes Assessment 2022 Key Findings | US EPA

kanasatka.org Lakekanasatka Wmp Final 20220816 (kanasatka.org)

More coverage from around the web

www4.des.state.nh.us Individual-Lake-Cyanobacteria-Report.knit

nottingham-nh.gov Cyanobacteria Bloom at Pawtuckaway Lake 5/27/2026 | Town of Nottingham NH

lebanonnh.gov Cyanobacteria Awareness - Stay Safe! • Lebanon, NH

indepthnh.org Summer’s Almost Here and Cyanobacteria Problems Back on NH Lakes and Ponds | InDepthNH.org

des.nh.gov Look Out Cyanobacteria… New Hampshire is Coming for YOU! | NH Department of Environmental Services

Appeared in: 2026-08-05 (#15)

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