Lake trip · Rock County, Wisconsin
Where to stay at Rock River Lake
Rock River Lake covers 548 acres in Rock County and carries a water-quality grade of NR (Not rated). Compare cabins, resorts, and vacation rentals below. The grade measures nutrients and algae — it is not a stay-or-skip rating. Late spring through early fall, with June through August the peak season for swimming, boating, and fishing.
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Places to stay near Rock River Lake
Cabins, resorts, hotels, and vacation rentals near Rock River Lake in Rock County, Wisconsin — live availability and prices. Add your dates to see totals.
Top-rated places to stay near Rock River Lake
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
About the water
Rock River Lake grades NR for nutrients and algae — Not rated. Not rated for swimming — there is not enough monitoring data to judge this lake. Water clarity is about 21 ft of visibility. The letter is not a reason to skip cabins and rentals around the lake.
Best time to visit
Late spring through early fall, with June through August the peak season for swimming, boating, and fishing.
Check the National Weather Service forecast for Rock River Lake →
About Rock River Lake
Fishing & license
Species, seasons and access for Wisconsin waters.
Wisconsin fishing license
Anglers under 16 are not required to have a license. First-time buyers and resident anglers age 65+ pay a discounted rate. · Wisconsin's general inland fishing season for game fish (walleye, pike, bass) opens the first Saturday in May and closes the first Sunday in March. Panfish and rough fish are open continuously on most waters.
Prices as published by Wisconsin Department of Natural Resources, 2026.
Camping & RV near Rock River Lake
Base your trip at a nearby state park for tent and RV camping and trails, with Rock River Lake a short drive away — or search all public campgrounds and RV sites in the area on Recreation.gov.
- Lake Kegonsa State Park · State Park22.2 mi
Common questions
Frequently Asked Questions
Cabins, resorts, and vacation rentals around Rock River Lake in Rock County, Wisconsin are on the map above with live availability and nightly prices. Waterfront rentals put you on the dock; lodging in the nearest town is usually cheaper with more choice. Lake Kegonsa State Park is about 22.2 miles away for campground options.
Rock River Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Not rated for swimming — there is not enough monitoring data to judge this lake. Always check local health-department advisories before swimming.
Late spring through early fall, with June through August the peak season for swimming, boating, and fishing.
Explore Rock River Lake
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Species activity outlook by water temperature and season
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LakeQuality Lake Trip Planner (2026)
Free trip-planning guide for Rock River Lake: how to pick a clean lake, the water-quality signals that matter, best swimming and fishing windows, and where to stay.
Lodging availability and prices are provided by Stay22 and its booking partners (Booking.com, Vrbo, Expedia); LakeQuality may earn a commission from bookings at no extra cost to you. Water-quality grades are independent of lodging listings. Always check current health-department advisories and managing-agency conditions before you travel.