Submitted by Orvis Fly Fishing on Thu, 2016-04-28 06:22 View on Orvis.com Tip of the week Techniques Look for rising trout taking Tan Caddis or tiny blue winged olives . Streamers may take some fish on warmer days. Seven-day forecast Spring fishing can be a great time. Warmer weather is increasing success. Runoff may cloud it up at times. Some rain predicted later in the week but happy farmers and trout will ensue. Conditions Must Have Flies Elk Wing Caddis Classic 18-14 Buy from Orvis.com Bead Head American Pheasant Tail Classic 14-16 Buy from Orvis.com Adams Classic 18-14 Buy from Orvis.com Bead Head Woolly Bugger Streamer black-olive 12-18 Buy from Orvis.com Bead Head Hare's Ear Nymph natural 16-12 Buy from Orvis.com Prince Nymph 22-18 Buy from Orvis.com Driftless Flyfishing Co.