Crazyrainbow Fly Fishing, Casper Wyoming

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Crazy Rainbow Fishing Report


Crazy Rainbow Fishing Report


Grey Reef:

Flows-  1,898 CFS

Fishing Report- Fishing is returning to normal after high water temps due to dam maintenance.  Water temps are at 58 degrees which is prime for trout throughout the reef. If you are looking to head out and fish look at using Caddis, Trico, Pmd’s , Wine san juan worms. 


Miracle Mile: 

Flows- 1,693 CFS

Fishing Report- The Mile is fishing well using worm PMD rigs. There has also been some luck on rock worms. Start with 4 ft to an AB or BB and adjust from there.



Fremont Canyon: 

Flows- 79 CFS

Fishing Report- We are hearing positive reports in the Canyon.  Despite the rain, water is still running clean and flows are still at operational level. Caddis, small black midges, and rock worms have been most productive on the nymph rig. Fishing has been good in this area.


The Big Horn: 

Flows- 1,942

Fishing Report-

The Big Horn has been fishing very well lately. Barr’s Emerger, the Jackson MacGruber, and Caddis have all been productive on the nymph rig. If you are looking to get into some dry fly action, the Big Horn may be the best bet. Hoppers and hopper droppers have consistently been fishing well. Start with 4 ft to an AB or BB and adjust from there. Hoppers, Crayfish, Worms, Caddis, PMD’s, Yellow Sallies are all working well.


Check out flows for all Wyoming rivers here: Wyoming River Flows (

Ugly Bug Fly Shop and Crazy Rainbow Fly Fishing is honored to be your go to fly shop and guide service in Casper, Wyoming. We offer guided fly fishing trips, lodging accommodations, educational courses, as well as the best advice in the west. Stop in the store or find us online! We offer free shipping on all online orders over $50. 

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The Ugly Bug Crew

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Blake Jackson

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