River Raisin

Hillsdale County, Lenawee County, Washtenaw County, Monroe County · 28 mi · Class I
Optimal: 400–1150 CFS · USGS #04176500
778 avg
273CFS
2.60 ft gauge height
Below Optimal
Stable
Flow data is live from USGS·Rapid classifications and CFS ranges need community verification·Know this river?
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Avg flow: 778 cfsHist. median: 0 cfsUSGS #04176500
Designated Water Trail · County

About

River Raisin, Michigan — 1813 Battle Frenchtown, NBP, Erie Marsh, Wyandotte, 1815 Springwells. The River Raisin flows through the ancestral territory of the Anishinaabe — the Ojibwe, Odawa, and Potawatomi — in the Monroe County interior, where the river served as a travel corridor, a fishing ground, and a gathering place. The Wyandotte Nation and the Ottawa Tribe of Oklahoma maintain cultural connections to the watershed today. Cession came through treaty: the 1807 Treaty of Detroit, the 1815 Treaty of Springwells, and the 1819 Treaty of Saginaw transferred the basin to the United States.

The river's defining historical event unfolded January 18–22, 1813, when the Battle of Frenchtown — also called the Battle of the River Raisin — pitted American forces under Brigadier General James Winchester against British and Native American forces under Colonel Henry Procter. It was the deadliest battle fought on Michigan soil, and its aftermath fed the cry "Remember the Raisin" that echoed through the rest of the war. The engagement helped set the stage for the 1813 Battle of Lake Erie.

With the peace, the river turned to timber. From the 1830s through the 1920s the River Raisin was logged to feed the Monroe County hardwood industry of 1850–1910, the Michigan Central Railway expansion of 1860–1910, and the Lake Erie lumber trade of 1865–1920s. The Monroe and Dundee sawmills, the River Raisin logging drives, and Monroe County timber operations were the major operators. By 1910 the hardwood stands were exhausted; the 1915 start of state forestry conservation and the mounting battlefield legacy brought large-scale logging to a close.

Modern recognition arrived in 2010, when the River Raisin National Battlefield Park was established — the 393rd unit of the national park system — to protect the primary battlefield along the lower river, a federal investment topping $15 million. The land near the mouth is also preserved as the Erie Marsh Preserve. Alongside the park, a watershed restoration has run from 2010 to the present, tackling more than a century of logging, agricultural, and industrial impacts through streambank stabilization (2015–2024), native fish restocking (2017–2024), and Monroe County water-quality improvements (2020–2024).

For paddlers, the river now reads as a Class I water trail. It runs at an average of 778 CFS on USGS gauge 04176500, with an optimal window of roughly 400–1150 CFS, and carries the Monroe County Water Trails designation. The River Raisin Water Trail, active since 2015, links more than 50 miles of paddling. Upstream, the river is being reshaped once more: the high-hazard Brooklyn Dam is slated for removal, with completion planned for 2026 under the Upper River Raisin Watershed Connectivity Project, restoring the waterway's natural flow.

Solunar Fishing Activity
🌒
Waxing Crescent
27% illumination
Poor
Moon overhead
9:56 AM
Moonrise
4:16 PM
Moonset
3:37 AM
Moon underfoot
9:56 PM
Next full moon: Jul 2910 days
10-Year Flow Patterns
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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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