The "Skwala" is an olive colored stonefly that lives on a multi-year life cycle typically growing to maturity after 2-3 years as a nymph. The unique thing about the hatch is that it happens early in the spring! Many times we are catching fish on dry flies while snow still covers the ridge tops. On our home river, the hatch begins in mid-March and further east in the Rocky Mountains rivers can see it around early April. Anglers should use nymphs and dries, in the size #12 - #8 range with a variety of patterns. Often the water is very clear and having just the right fly can make all the difference.