Grass River Provincial Park - Canada

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About Grass River Provincial Park

Grass River Provincial Park is a large wilderness park in north-central Manitoba, Canada, covering roughly 2,290 square kilometres along the historic Grass River canoe route. The park spans a boreal forest landscape featuring a chain of interconnected lakes, granite outcrops of the Canadian Shield, and mixed spruce, pine, and birch forest. Provincial Trunk Highway 39 and Provincial Road 391 bisect the park, providing road access to several lakeside campgrounds and day-use areas. Key features include Karst Spring, one of the largest springs in Manitoba, plus fishing waters for walleye, northern pike, and lake trout. The park protects important habitat for moose, black bear, woodland caribou, and bald eagles. Historically, the Grass River served as a fur-trade travel corridor linking Lake Winnipeg to the Churchill River system. For RV travelers, Grass River offers a quieter, backcountry-feel alternative to southern Manitoba parks, with basic campgrounds rather than full-service resorts.

RV quick facts for Grass River Provincial Park

Detail	Information
Full hookups	No full hookups; electrical service available at some sites in Gyles and Iskwasum campgrounds
Dump station	Seasonal dump station access at park campgrounds
Max RV length	Most sites accommodate RVs up to 30 to 35 ft; larger rigs should confirm site dimensions when booking
Cell service	Limited to non-existent in most of the park; expect dead zones along PR 391
Road restrictions	Gravel access roads to some backcountry sites; spring road bans may apply on secondary routes
Reservation window	Manitoba Parks reservation system opens each spring for the summer season
Generator hours	Quiet hours typically 11 p.m. to 8 a.m.; generators restricted to daytime use

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Best time to visit Grass River Provincial Park

Mid-June through late August is the best window, offering long daylight hours, warm days suitable for swimming and paddling, and full campground operations. July typically brings the warmest temperatures and the most reliable road conditions for towing. Early September is a strong shoulder option with fewer bugs, fall colour in the boreal forest, and reduced crowds, though nights turn cold quickly. Avoid shoulder months of May and October when services are limited and overnight temperatures often drop below freezing.

Jan 20 mm

-18°C - -28°C

Park campgrounds closed; winter access only

Feb 15 mm

-15°C - -26°C

Campgrounds closed, snow-covered roads

Mar 20 mm

-7°C - -18°C

Campgrounds closed

Apr 25 mm

3°C - -8°C

Campgrounds closed; spring thaw and road bans possible

May 45 mm

13°C - 0°C

Campgrounds open late month; limited services

Jun 70 mm

20°C - 7°C

Peak blackfly and mosquito season

Jul 80 mm

23°C - 11°C

Warmest month, peak visitation

Aug 70 mm

22°C - 10°C

Excellent paddling and fishing weather

Sep 50 mm

14°C - 4°C

Shoulder season; fall colour, cool nights

Oct 35 mm

5°C - -3°C

Campgrounds closed after Thanksgiving

Nov 25 mm

-7°C - -17°C

Campgrounds closed; early winter conditions

Dec 20 mm

-15°C - -25°C

Campgrounds closed; deep winter

Things to do at Grass River Provincial Park

Karst Spring Trail Moderate
RV parking available
Karst Spring Trail leads to one of the largest natural springs in Manitoba, where water bursts from a limestone hillside into a moss-lined stream. The out-and-back hike travels through shaded boreal forest and crosses boardwalks over wet terrain. RV parking is available at the trailhead pull-off on PR 391.
Paddle the Grass River Canoe Route Moderate
RV parking available
The Grass River canoe route follows a historic fur-trade waterway through a chain of lakes linked by short portages. Paddlers can choose day trips from road-accessible launches or multi-day wilderness traverses. Launch points at Iskwasum and Reed Lake have parking suitable for tow vehicles and trailers.
Fishing on Reed and Iskwasum Lakes
RV parking available
Reed Lake and Iskwasum Lake offer productive fishing for walleye, northern pike, and lake trout in clear Canadian Shield waters. Both lakes have boat launches accessible to RVers towing small boats. A Manitoba fishing licence is required.
Gyles Campground Beach Easy
RV parking available
Gyles Campground sits on Simonhouse Lake with a sandy swimming beach and a gentle shoreline suitable for families. The campground offers electrical sites that accommodate mid-size RVs. The adjacent day-use area has picnic tables and a boat launch.
Wekusko Falls Day Trip Easy
RV parking available
Wekusko Falls, just outside Grass River park boundaries on PR 392, features twin suspension bridges over a dramatic cascade on the Grass River. The short interpretive trail is accessible in under an hour and offers dramatic photo opportunities. A paved parking lot accommodates RVs and trailers.
Wildlife Viewing along PR 391 Easy
RV parking available
PR 391 through the park is a reliable corridor for spotting moose, black bear, bald eagles, and occasionally woodland caribou. Dawn and dusk offer the best viewing, with several pull-offs providing safe places to stop. Drivers should reduce speed and watch for wildlife on the roadway.
Iskwasum Lake Campground
RV parking available
Iskwasum Lake Campground offers quiet, lakeside sites with access to swimming, paddling, and fishing. Sites are set among mature spruce and pine and some accommodate RVs with electrical hookups. A boat launch and basic amenities support longer stays.

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Find the perfect RV for these nearby campgrounds

Wekusko Falls Provincial Park Reed Lake - Grass River Provincial Park Iskwasum - Grass River Provincial Park

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RV Rentals Grass River Provincial Park

Grass River Provincial Park, MB, Canada

How to get to Grass River Provincial Park

The park sits along PTH 39 and PR 391 in north-central Manitoba, about 600 km (7 hours) north of Winnipeg and roughly 80 km (1 hour) east of Flin Flon via Cranberry Portage. The Pas is the nearest larger service town, about 170 km south via Highway 10 and PTH 39. RV drivers should fuel up in The Pas, Cranberry Portage, or Flin Flon since services are sparse between communities, and watch for wildlife, frost heaves, and gravel shoulders on secondary roads. The nearest airports for fly-and-rent trips are Thompson (YTH) and Flin Flon (YFO), with Winnipeg (YWG) the main hub for larger rental fleets.

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