Massachusetts · Middlesex / Suffolk Co.

Charles River

Middlesex / Suffolk Co. · 80 mi · Class Flat
Optimal: 100–800 CFS · USGS #01104500
280 avg
273CFS
1.80 ft gauge height
Optimal
→Stable
⚡Flow data is live from USGS·Rapid classifications and CFS ranges need community verification·Know this river?
Avg flow: 280 cfsHist. median: 252 cfsUSGS #01104500
Charles River Watershed Heritage · Charles River Conservancy

The defining river of Greater Boston — 80 miles from Echo Lake in Hopkinton through 23 cities and towns to Boston Harbor. The lower 18-mile stretch is one of the most paddled urban rivers in America, lined with Harvard and MIT boathouses and the Charles River Esplanade. From Watertown upstream, the river winds through quiet suburban marsh and forest with surprising solitude.

Outfitters
Charles River Canoe & Kayak
Rentals at Allston, Newton, and Kendall Square
Community Boating
Sailing and paddling on the Charles River Esplanade
10-Year Flow Patterns
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Your Optimal Range
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Data Quality

River conditions are community-verified. CFS ranges, difficulty ratings, and access points may not reflect every flow level or seasonal change. Always check current conditions, scout unfamiliar rapids, and paddle within your skill level.

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