And just like that the warm water from the spill over release is done and the colder water is back in the river. Denver Water has stopped releasing water from the spillway and has gone to the bottom release causing water temps to drop dramatically. This will cause a shift in bug activity as well as their behavior especially in the mornings as the water is even colder. With these changes start to think of going back to smaller bugs like midges and mayflies. Despite these new flows and colder water temps fishing is still good and the fish are happy. Top flies of the day were a wine worm, size 22 Grey RS2 and 22 Top Secret Midge.