Fishing Information

Colorado River - Grizzly Creek to Silt

2030 cfs
4 mph
40 °F
Weather @COLORADO BASIN - Updated April 03, 2020 - 10:48am

Current River Flow Updates

Latest Update: 4/3/20 -- The lower Colorado River is fishing well. Flows at Glenwood are 1740 cfs. Mornings we have been seeing some good midge hatches and fish rising. Some lower sections have been seeing some muddy creeks turning the color off belowSilt. Nymphing has been the most productive and fish are being caught in the deep holes, but fish have been moving to the banks, faster water and pockets as well. You might be able to pick some fish off on long dry droppers. When nymphing try a larger stonefly or any general attractor pattern like Pat's Rubber Legs and Flashback Tungstones above a few other smaller flies. Like smaller tungsten PT's, Black and Blue KGB's and then lastly small midge patterns. Try the Mighty midge in both colors and the larger sizes, as well as brassies and etc.

River Information

The lower section of the Colorado River flows through the town of Glenwood Springs as it makes it way westward. By the time flows reach this area of the state, countless tributaries have all contributed to making the river quite large. This stretch of river is very popular for float fishing, however wading can still be productive. Many fish hold along the rocky banks and nymphing or twitching a streamer around the boulders and pocket water will put fish in the net. This portion of the river is home to some very large Rainbow and Brown trout and covering water as you fish along will be key to success.

Seasonal Conditions

The lower portion of the Colorado is fishable year round. Like most rivers around the state, Spring through Fall will be most productive when the wide variety of aquatic insects that live here are most active. Stoneflies are a major part of a trout’s diet and the river sees some terrific dry fly fishing in mid-summer with Golden Stoneflies and the ever popular Salmonflies. Caddis and a smattering of mayflies will typically be found throughout the summer as well. The colder months will primarily be a nymphing game. Fishing the slower, deep pockets very thoroughly and diligently will be, through the winter. Considering the size of fish swimming in this stretch, spending a little time throwing a streamer will always be worth a try as well. The further west you head, the river will begin to warm and holds smallmouth bass, carp and some catfish.


Midges, Baetis

Mayflies, Caddis, Terrestrials, Stoneflies, Streamers

Mayflies, Caddis, Terrestrials, Streamers

Additional River Information

Colorado River below Glenwood Springs

COLORADO BASIN River Gauge View Detailed Information

  • Flow 2030 cfs
  • Wind 4 mph
  • Temp 40 °F
  • High/Low 67/37

River access

In Glenwood there are two exits with most of the area between town and Canyon Creek (exit109) are public and great fishing. Dino is the rest area only accessible going eastbound between New Castle and Glenwood and is so named because there is a dinosaur protected in concrete on the south side of the river.

Float Trip Options:
The river is accessed off of several exits off I-70. The river in this area is pretty tame, although Canyon Creek below Glenwood Springs is worth scouting.

Roaring Fork (Carbondale or West Bank boat launch areas) to Glenwood Park. Glenwood to Dino boat launch:
Glenwood to New Castle boat launch:
Dino to Silt boat launch:
Basalt to Battlement Mesa: This section has fewer trout but there are some true beasts. There is also amazing Carp fishing and you may catch some Smallies.

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