Fly Fishing Stream Conditions Report: Upper Big Thompson

This year: Flows on the Upper Big Thompson have been steady this month, currently holding around 55-60 CFS. These flows are considered good to high for the river. For context, the Big Thompson below Moraine Park near Estes Park has seen an average of 26 CFS this month, with a maximum of 42 CFS. Fishing quality has been excellent, and with warmer weather expected, conditions should remain favorable. Midge emergers are consistently the most productive flies, but anglers are also seeing good Blue Wing Olive hatches on most days. Focus your efforts on nymph rigs and be ready for dry fly opportunities when the BWOs are active. For dry fly action, try a BWO or Small Parachute Adams. Nymph setups should include patterns like the Rainbow Warrior, CDC Pheasant Tails, Sow Bugs, and Copper Ribbed Rs2.

Best time of day: All day

Prior years: No prior years report for this period.