At a Glance
- Drive from Cabins: ~20 min
- Lake Size: 7,256 acres
- Key Species: Kokanee, lake trout
- Entry Fee: None
Lake Granby Overview
Lake Granby is one of Colorado's largest reservoirs at over 7,000 acres, located approximately 20 minutes south of Grand Lake. The lake was created by the Green Mountain Dam as part of the Colorado-Big Thompson water project and is managed by the Arapaho National Recreation Area.
The lake offers extensive recreation including fishing, boating, camping, and hiking with no national park entry fee required — an important alternative for Grand Lake visitors on multi-day trips who want variety beyond RMNP.
Fishing Lake Granby
Lake Granby is one of Colorado's top kokanee salmon fisheries, with productive runs typically in late summer and fall. Lake trout (mackinaw) are also present and can be caught through summer by trolling at depth. Rainbow and brown trout round out the species list.
Boat ramps are available at multiple locations around the lake. Several marinas and outfitters near Granby offer boat rentals and fishing guide services. A Colorado fishing license is required for all anglers 16 and older.
Other Recreation at Lake Granby
The Arapaho Bay campground on the south shore of Lake Granby provides access to trails into the Indian Peaks Wilderness. The Monarch Lake Loop is the most popular day hike from this area.
Kayaking and paddleboarding are popular on Lake Granby in the morning when winds are calm. The large lake surface is more exposed to afternoon wind than Grand Lake, so morning water activities are recommended. Stand-up paddleboard rentals may be available at local outfitters seasonally.
Not a Hiking Trail
Lake Granby is the largest of the connected lakes in the area and sits within the Arapaho National Recreation Area south of Grand Lake. Access here is about getting to the water rather than walking a route — boat ramps, shoreline access points and campgrounds around the perimeter.
It is a genuine drive from the cabins rather than the five-minute run to the park entrance, so a day here is planned rather than improvised.
Licences and Regulations
Fishing in Colorado requires a current licence from Colorado Parks and Wildlife, and regulations differ by water and by species. Bag limits, seasonal closures and boat inspection requirements all change, so check CPW directly rather than relying on any guide.
Aquatic nuisance species inspection applies to trailered boats at many Colorado waters. Confirm the current requirement before arriving with a boat.
Fitting It Into a Cabin Trip
Because this is forest and recreation-area land rather than national park, dogs are treated differently here than on park trails — which for groups at the cabins travelling with a dog makes it one of the more usable days out.
Every property has a full kitchen, and a day on the water tends to end with cooking at the cabin rather than finding a table in the village. All four welcome dogs, up to two per stay with a dog fee per stay.
Distances, elevation gain and difficulty above are drawn from published trail listings and are given as a guide. Published figures vary between sources, and trail conditions, closures and access change through the season. Check current conditions with the National Park Service at nps.gov/romo before setting out.