The Beaverkill at Cooks Falls was recorded as flowing at 147 cubic feet per second on Monday afternoon, which is above the average flow of 129 cfs over 103 years of record-keeping. The river had been well below normal until receiving the steady rains of Sunday and Monday. Thankfully, as both the Beaverkill and Willowemoc have been quite low. The highest flow recorded on September 19 was 5820 cfs in 2012; the lowest recorded flow on this date was taken way back in 1964, when a paltry 27 cubic feet per second trickled past the gauging station.
Fly hatches on the Beaverkill and Willowemoc are spotty and quite small; you may find some Trichos still hatching in the mornings, along with small Blue-Winged Olives and occasional caddis flies, but not in great numbers. Terrestrials such as ants, beetles, grasshoppers and inchworms are still important to the trout’s diet during this time of year. And on the East and West Branches and Main Delaware Rivers, there are still some Isonychias hatching in the afternoons. Some favorite tiny flies that work well on the Beaverkill include the Red Midge and Pheasant Tail Midge, in sizes #20, #22 and smaller. Remember to tippet down to 6X and 7X when fishing these tiny flies.
The East Branch Delaware River was also above the average flow on Monday afternoon, recorded at 542 cubic feet per second (after having peaked at 600 cfs) as compared to the average flow of 392 over 61 years of record-keeping, and water temperatures this past week have been more favorable, ranging between 60 and 70 degrees Fahrenheit.
The West Branch Delaware, however, was steadily averaging about 1500 cubic feet per second this past week until this past weekend, when it plunged to between 500 and 600 cfs; then by early Monday morning spiked up to more than 2000 and has now receding down to 872, This is above the average flow of 515 cubic feet per second over 52 years of record-keeping. Water temperatures on the West Branch maintained from 51 to 57 degrees all week; then rose to 62 degrees Fahrenheit by Monday afternoon.