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Printable fishing map · Colorado

Blue River below Green Mountain Reservoir

5 numbered points: 2 bridges, 2 hazards, 1 USGS gauge.
GuidedFloatsFind your water. Then find your guide.guidedfloats.com/water/co/blue-river-green-mountain-tailwater/
Points reviewed Sep 16, 2026
Map © OpenStreetMap contributors (ODbL). Points curated by GuidedFloats from OpenStreetMap and state agency sources. Not a navigation chart. Confirm access, hours and regulations before you go.

Print it. Bag it. Bring it.Phones die, screens crack, and most of this water has no signal. Print this map, fold it into a zip-top bag or dry bag with your license, and you have a backup your electronics can’t give you. Every marker is numbered so you can say exactly where you are.

Numbered points

#PointTypeLat, LonNotes
1Green Mountain Dam
Bureau of Reclamation · head of the tailwater
Dam / hazard39.87720, -106.33080Releases from Green Mountain Reservoir set the flow; the tailwater fishing starts immediately below.
2USGS 09057500 — Blue River below Green Mountain Reservoir
Immediately below the dam
USGS gauge39.88026, -106.33392The gauge the water page reads for flow.
3Spring Creek Road bridge
Summit County
Bridge crossing39.92303, -106.34787The only mapped crossing in the canyon reach below the dam.
4Griggs Dam
Diversion structure
Dam / hazard39.99865, -106.38174Named diversion dam on the lower river above Kremmling; scout before running it.
5Trough Road bridge
Grand County · CR 1
Bridge crossing40.02897, -106.38681Bottom-end crossing before the Blue meets the Colorado at Kremmling.

Before you launch

Gauge: USGS 09057500 — BLUE RIVER BELOW GREEN MOUNTAIN RESERVOIR, CO. Live flow on the web page.

Species: Brook Trout, Brown Trout, Cutthroat Trout, Kokanee Salmon, Mountain Whitefish, Rainbow Trout

Regulations: cpw.state.co.us/rules-and-regulations

Emergency: call 911 and give the number of the nearest point on this map plus its coordinates.

Access notes

Green Mountain Dam below-dam access at the USGS gauge - the release reference and the head of the fishable reach.
Blue River State Wildlife Area - the main block of public wade access below the dam.
BLM parcels along the lower canyon - walk-in access between private ranch frontage.
Highway 9 pullouts between Green Mountain and Kremmling - roadside access to the lower reach.
Kremmling and the Colorado River confluence - the downstream end and a common float take-out.
Green Mountain Reservoir ramps - trailer access to the impoundment above the tailwater.
Spring Creek and Cataract Creek confluence areas - tributary mouths and walk-in access points.

Seasons

Spring: high, cold and often unfishable during runoff and reservoir fill; the canyon is dangerous at peak release.
Summer: heavy irrigation releases keep the river big; wade with care and fish the edges and pockets.
Fall: releases drop in September and October, the kokanee run out of the reservoir, and the big browns feed hard.
Winter: low steady release and cold clear water, with technical but pr

guidedfloats.com · Find your water. Then find your guide.Fold in half, bag it, keep it with your license.