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About the Arkansas River

With over 300 miles of river, the Arkansas River starts it journey deep in the Sawatch Mountains (highest mountain range in Colorado) and runs unobstructed until it reaches the eastern plains and a dam in the town of Pueblo.

While it’s the longest river in Colorado, this river is mostly fished from Twin Lakes to Canon City and on into Pueblo. One of the most well known hatches in the west is the Mother’s Day Caddis hatch. Late morning hatches and evening dry fly fishing are highlights of this annual hatch from Mid-April to Mid-Late May.

Terrestrials such as ants, beetles, grass hoppers, and crickets are great choices during the hot summer months of June through September. Mayflies are thick during their spring hatch of late March through mid May, while thinner during the fall hatch of mid September through early November.

The river’s spring runoff starts mid May, with peak 3,000 cfs mid June, 1,300 cfs mid July, slowly dropping into the fall months. Typically flows between 300-500 cfs from late fall through early spring. Winter months are great time to fish with consistently clear water days and great midge and Baetis hatch below Pueblo Reservoir.