On Sunday evening June 2, 2019, the Beaverkill at Cooks Falls was flowing at 477 cubic feet per second, not too bad considering the heavy downpours that occurred in the afternoon. The average flow on this date over 105 years of record-keeping was 368 cubic feet per second. Water temperatures this past week were favorable, ranging from a low of 55 degrees to a high of 65 degrees Fahrenheit.
This past week we noticed a few rises and a smattering of flies hatching (no great numbers) but March Browns, those large size #10 mayflies, were apparent. A friend reported a successful fishing trip that resulted in a good number of trout, some from 15” up to 18”, caught on a March Brown imitation. The Beaverkill was bank-full, with showers predicted for that afternoon; and so, he opted to fish at noontime. He was fishing with a size #12 and a 5x tippet; he believed if he had a size #10 fly, he would have been even more successful. There were a few March Browns coming off the water. They ceased for a while and then started up again a couple of hours later, which is sometimes common when a hatch starts and then falters, only to start up again afterwards. There were no other flies hatching that were apparent in any number except for the March Browns, which are easy to identify because they fall into the “large mayfly” category, hook size #10. My friend reported that the rises were sporadic as were the flies that were hatching.