Ashuelot River at Winchester

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Winchester , NH
Longitude/Latitude: -72.3916 / 42.7682

Upstream of the Rte 119 Bridge in Winchester. Monitored for E.coli monthly June through September.  Other parameters May through September: DO, turbidity, pH, temperature, specific conductance, chloride.  In conjunction with NH Volunteer River Assessment Program.

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Sample DateStatusCFU/100mlWet Weather
2025-07-15Blue Clean for Boating and Swimming59N
2025-06-17Blue Clean for Boating and Swimming39Y
2024-09-10Grey Historical data73Y
2024-08-13Grey Historical data68N
2024-07-16Grey Historical data89N


If it has not rained in the past 1-2 days, this site is Usually clean for swimming and Usually clean for boating.

If it has rained in the past 1-2 days, this site is Sometimes clean for swimming and Usually clean for boating.

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Upstream of Rte 119 Bridge in Winchester.

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