Winiger Ridge

Area Status: Open
This area is Open

Winger Ridge Campsite

National Forest System Road (NFSR) 359 is open seasonally to motorized use. High clearance vehicles recommended. Overnight use is allowed at designated first-come, first-served campsites (see map). Before visiting, please call or check for current information on fire restrictions and road closures (Road Status Table).

Winiger Ridge is the dominant landscape feature on Gross Reservoir's western shores. The Forsythe Canyon Trailhead provides parking for year-round access. Gross Reservoir is managed by Denver Water. Please visit their website for regulations and additional information.

Fuels Mitigation Work Near Gross Reservoir Designated Camping Area Begins Aug. 5.

Fuels reduction work will begin on Aug. 5 in the Gross Reservoir Designated Camping Area on the Boulder Ranger District. Dispersed camping at the area will be affected through Aug. 16. During this time, dispersed camping opportunities will be limited and may need to be temporarily re-located as fuels reduction crews work in and around campsites. Signs have been posted at the campsites to notify visitors of about the project. See full release


At a Glance

Current Conditions: Road is closed in winter. Free camping allowed only in designated numbered campsites on the west side of Gross Reservoir along NFSR 359. There are no facilities.
Usage: Heavy
Restrictions: Motorized vehicles must be street legal or registered annually through Colorado State Parks' OHV Registration Program. All motorized vehicles are restricted to open routes designated for their use. Contact your local District Office for a copy of the local Motor Vehicle Use Map.
Closest Towns: Boulder, Colorado
Water: Gross Reservoir; treat water for drinking.
Restroom: Vault Toilet at Forsythe Canyon Trailhead
Operated By: U.S. Forest Service and Denver Water Board
Information Center: Boulder Ranger District, 2140 Yarmouth Ave, Boulder, CO 80301, Phone 303-541-2500, Fax 303-541-2515; Contact Us

General Information

Directions: From Boulder, head west on Canyon Boulevard (Colorado Highway 119) to Magnolia Road (about 4.5 miles up from the mouth of the canyon). Turn south on Magnolia and follow it for 6.6 miles. Turn south on Boulder County Road 68 and follow it two miles to National Forest System Road (NFSR) 359. Turn south on NFSR 359

Recreation Map

Map showing recreational areas. Map Information



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Camping & Cabins

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Day Hiking

Forsythe Canyon Trail heads east down a narrow gulch, starting about 300 yards south of the beginning of NFSR 359. It follows Forsthe Canyon for about a mile to the shore of Gross Reservoir.

The Osprey Trail runs above the southern shoreline of Gross Reservoir, below the Union Pacific Railroad grade. Beginning at Denver Water Board's Osprey Point Trailhead, it ends at the South Boulder Creek inlet.

Difficulty Level: Easy to Intermediate

OHV Riding & Camping

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Related Information

Areas & Activities

Campgrounds At-A-Glance


  Area/Length : 
2.5 miles (One way)

  Latitude : 

  Longitude : 

  Elevation : 
7,300' - 7,800'