In streams where natural features have been removed, half logs provide cover for both juvenile and adult fish. They offer protection from excessive sunlight, strong currents, and predators. They also provide convenient holding areas from which fish can rest while feeding on aquatic insects that drift by. Half logs are inexpensive and fairly easy to install, and they look natural. Logs are split lengthwise, and one half is submerged roughly parallel to the stream’s flow. The half log is kept off the bottom by wooden blocks, and anchored to the stream bottom by rebar.