Crazyrainbow Fly Fishing, Casper Wyoming

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Casper, WY Fishing Report


Casper, WY Fishing Report

Grey Reef, Miracle Mile, and The Big Horn
May 3rd, 2023

Grey Reef- 

Flows have recently bumped to 1,000 cfs. BWO’s are the most productive pattern on this stretch. Outside of that, midges and emergers are fishing well. Grey Reef Dam to Lusby is the go-to float a the moment. We have yet to take any boats below Government Bridge as it is pretty off color.


Fremont Canyon-

Flows are sitting at about 75 CFS. The Canyon is fishing very simple with leeches and rock worms seeing the most action. There is no more construction of Cortes Road, so you no longer have to take the Pathfinder route. 


The Big Horn: 

The Big Horn is experiencing very high flows at the moment due to run off. We recommend avoiding this area for the time being. We foresee flows may stay high for sometime.  

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

Blake Jackson

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