Every 4 or 5 years the tropical moisture of El Nino creates monsoons in the Rocky Mountains from late July through August and possibly September during enhanced cycles. This is a good thing. Typically August is the hottest month in the northern hemisphere and daily rain cools the air temperate, increases river flows and consequently also lowers water temperate. Cold water fish species endure less stress. The downside is the rivers tend to be more turbid from muddy runoff upstream. In times of plenty, anglers should continue using good techniques for catch and release. Fish mortality increases with stress and injury.
Stress factors that will kill fish are lack of oxygen in warm water, fighting a fish to exhaustion, poor landing and keeping them too long out of water. In addition, bringing fish, such as, grayling or lake trout from deep water too quickly to the surface can be fatal. Anglers need a balance of experience and good sense. Don’t fish in low water on hot days. A fish shouldn’t be out of the water longer than anglers can hold their breath. Higher test-strength line shortens the battle. Keeping the fish in the net and in the water helps insure a long life. Wet your hands before handling fish. A dry hand can wipe the mucus or slime from the skin and increase the possibility of infection.
Injury is reduced with artificial flies and lures. A fish will suck bait in deeply. By chance if your fly is hooked deep, simply cut the line close to the hook. It will typically deteriorate. Don’t worry about losing fish with barbless hooks, just keep the line tight. They are easier to remove from the lips, mouths and cheeks. Avoid handling your catch over hard surfaces such as boats and rocks. Fish wiggle a lot and are slippery. So, keep them in the net and if possible release them from the net. Neoprene nets are better than twine and bigger baskets hold the all of the fish. With wet hands, gently place your catch in slower water, facing upstream in a river, pushing them forward and pulling back until they swim from your hands. Practice good conservation in your piscaphilia purses. All anglers want to photograph their trophy, so just hold your breath and smile.