Upper Klamath Lake Fish Report for 11-27-2019. KLAMATH YACHT CLUB is located on the shore of Upper Klamath Lake, Oregon’s largest. Catch rates have improved. The Upper Klamath is easily one of the most beautiful and popular of all Oregon lakes. The area covers the Upper Klamath Basin and extends east to include the Chewaucan and Warner Lakes Basins. The Upper Klamath Lake is almost 30 miles long and up to eight miles wide and depths of up to 60 feet in some places, Upper Klamath Lake in Oregon is the largest freshwater body west of the Rocky Mountains. Average wind speeds of 8-15 knots make Upper Klamath Lake a … Nestled in the Klamath Basin, it is surrounded by the dramatic mountain landscapes and forested hills of the state's Southern tourism region. Stretching for an impressive 30 miles, Upper Klamath Lake is the largest freshwater lake in the State of Oregon. Upper Klamath Lake boasts a beautiful mountain setting, but the nearby low hillsides channel the winds for fairly steady sailing conditions. Oregon's Klamath and Lake counties offer outstanding warmwater fishing in the region's lakes and reservoirs, and even in the lower reaches of some of the rivers and streams. Upper Klamath Lake Fishing Report Mang Iings on April 10, 2020 April 10, 2020 Freshwater fish reports north state fishing report for week of chico enterprise oregon klamath wood river the trophy trouters Most anglers are bait fishing using dead minnows in Shoalwater and Howard Bays. Upper Klamath Lake features an average depth of 14 feet and a surface area of 61,544 acres. Upper Klamath & Agency Lakes Upper Klamath Lake - Klamath Falls, OR (Klamath County) Photo Credit: Courtesy of ODFW. by OR Department of Fish & Wildlife Staff 11-27-2019 Website.