The Sunrise River is a scenic 39.1-mile tributary of the St. Croix River in east-central Minnesota. Originating in Chisago County, it flows generally southeast before joining the St. Croix River near the town of Sunrise. The river's watershed covers parts of Anoka, Chisago, Isanti, and Washington counties.

Paddlers can enjoy several distinct sections of the Sunrise River, ranging from flatwater to gentle Class I rapids. The upper reaches offer a quiet, wooded experience ideal for wildlife viewing. As the river widens downstream, it provides more open vistas and connects several lakes, including Martin Lake in Anoka County. The lower section from Kost Dam to the St. Croix confluence offers an 11.5-mile stretch popular with canoeists and kayakers.

The river's difficulty is generally suitable for beginners to intermediate paddlers, with mostly flatwater and occasional riffles. However, water levels can affect conditions, so checking reports is advisable. Late spring through early fall typically offers the best paddling, with summer providing warm weather and good wildlife viewing opportunities.

The Sunrise River corridor supports a diverse ecosystem. Paddlers may encounter beaver, deer, otters, various bird species including eagles and herons, and numerous turtles. The river is also known for its excellent fishing, particularly for smallmouth bass.

Key access points include locations in Chisago County for the upper sections, Martin Lake for the middle portion, and Kost Dam for the lower stretch. The nearby towns of North Branch, Stacy, and Sunrise provide services for paddlers.

Historically, the Sunrise River played a role in the logging industry, with its waters used to transport timber. Today, it serves as an important recreational resource and natural corridor in the developing areas east of the Twin Cities.

Safety considerations include being aware of deadfall in the upper sections and potential swifter currents after heavy rains. Paddlers should also be mindful of private property along the shores and follow Leave No Trace principles.

For those seeking a multi-day adventure, it's possible to combine a Sunrise River trip with paddling on the St. Croix River, creating an extended journey through the scenic landscapes of eastern Minnesota.