How water level affects fly fishing tactics
Friday, November 30th, 2007You can tell high water by examining a river or stream. High water will be characterized by narrow banks and streamside weeds being under water. High water typically means fast water and fishing in the middle of the water is futile. Fish are not likely to rise to dry flies because of the water speed, and it will be difficult to get a nymph deep enough or natural enough. The best tactic for this kind of water is to fish the near the banks, at the tail out of pools, at the head water of shallow riffles, and in slower side channels.
If the water is dirty from run off, the problem is complicated further but water that has visibility of a foot or more can still be fished with a dry fly. Streamer fishing can be excellent in these conditions. Small fish and crustaceans get pushed around in this type of water and the cover of dirty water provides conditions where larger trout that normally don’t feed during the day will start feeding. Light colored large streamer patterns, yellow or white can be very effective.
Low clear water also provides unique challenges and opportunities. Typically the water is easier to read as it is possible to see the bubble lines moving through a pool. With the slower flow the fish are likely to move to a dry fly and can be seen sipping insects off the surface. With low water it is often possible to see the trout. With the fish hovering closer to the surface their ability to see rises dramatically and they are more cautious and aware of the surrounding.
Approach the fish from downstream and be cautious. Use a long leader. Twelve feet is not too long. Stay low. If you are fishing nymph or wet flies put it ahead of the fish by twice its depth. If the fish is two feet below the surface drop your nymph four feet in front of the fish. If you think the fish has taken the fly strip in some line or pull the rod to the side. Don’t lift the rod because if you do and the fish hasn’t taken the fly you will spook it.


















