Crazyrainbow Fly Fishing, Casper Wyoming

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Crazy Rainbow Fishing Report


Crazy Rainbow Fishing Report

Grey Reef:

Flows- 1,600 CFS

Fishing Report- The Reef is still sitting around 1,600 CFS. We have been experiences a fair amount of rain lately. Due to this, we are still only fishing above Government Bridge. Water is pretty off color. BWO’s are still hatching, but leeches and San Juans are fishing best. Start with 6 ft to an AB or BB and adjust from there.


Miracle Mile: 

Flows- 2,900 CFS

Fishing Report- The Mile is moving fast. Be incredibly mindful of this if you are walk and wading. The road to the Mile was recently pretty washed out. The rain has held off for the last few days so the road conditions are looking better. We recommend only making the journey if you have a 4 wheel drive vehicle. Please keep in mind there is little to no cell service out that way. Leeches, worms, and Pat’s Rubber legs are fishing best.  


Fremont Canyon: 

Flows- 80 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. There is some steady BWO action, but rock worms and RS2s are also productive. 



The Big Horn: 

Flows- 6,000

Fishing Report- Flows are incredibly high on the Big Horn. There is little to no clarity on this stretch. We do not recommend attempting to fish this section. 


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. 

Got some fish pics you would like to share? Shoot them to us in an email to


The Ugly Bug Crew


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Blake Jackson

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