Rio Grande Hatch Chart

Beginning of the Month Middle of the Month End of the Month Tip of the Month
January Midge Midge Midge Very cold and windy, dress warm. You will need 'de-icer' for your rod. Great unweighted streamer action. Fish next to or under the ice on the banks.
February Midge Midge Midge Very cold and windy, dress warm. You will need 'de-icer' for your rod. Great unweighted streamer action. Fish next to or under the ice on the banks.
March Midge Midge Midge Very cold and windy, dress warm. You will need 'de-icer' for your rod. Great unweighted streamer action. Fish next to or under the ice on the banks.
April Midge
Streamers
Midge
Streamers
Caddis
Midge
Streamers
Very cold and windy, dress warm. You will need 'de-icer' for your rod. Great unweighted streamer action. Fish next to or under the ice on the banks.
May Caddis
Midge
Streamers
Caddis
Midge
Streamers
Caddis
Midge
Streamers
River starts run-off. Be very careful. Fish very close to bank.
June Caddis
Midge
Streamers
Caddis
Stonefly
BWO
PMD
Midge
Streamers
Caddis
Stonefly
Green Drake
BWO
PMD
Midge
Streamers
Fish close to the banks, with in inches of shore for big browns in the early a.m. and late p.m. Use a two fly rig, dry-dropper combination, mid day. Read the slime lines for feeding fish. Watch the high mountain lakes that are still thawing out. First anglers there catch the biggest of the year.
July Caddis
Stonefly
Green Drake
BWO
PMD
Midge
Streamers
Caddis
Stonefly
Green Drake
PMD
Midge
Streamers
Terrestrials
Caddis
PMD
Midge
Streamers
Terrestrials
Fish the middle of the river for Rainbows. Great mayfly action in the riffles and head of pools. Start heading to the high mountain streams for brookies or cuts.
August Caddis
Midge
Streamers
Terrestrials
Midge
Streamers
Terrestrials
Midge
Streamers
Terrestrials
Fish the banks on windy days with all terrestrial patterns. Go deep with weighted streamers.
September Stonefly
Midge
Streamers
Terrestrials
BWO
Midge
Streamers
Terrestrials
BWO
Midge
Streamers
Terrestrials
Cool nights mean slower a.m. fishing. Watch for the September 5th stonefly hatch in South Fork. Lasts one or two days only. Great small stream fishing- all dry fly action.
October BWO
Midge
Streamers
Terrestrials
BWO
Midge
Streamers
Midge
Streamers
Stay close to the river. Riffle hunting season begins. WEAR ORANGE! Use a two-nymph rig. Some dry action on warm days. Start looking for pre spawn browns. Excellent brookie fishing at all lakes.
November Midge
Streamers
Midge
Streamers
Midge
Streamers
Slow down, size down on all nymphs. Go deep.
December Midge Midge Midge

*General Hatch Information Provided by South Fork Anglers

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