Section 41.17.115 - Management of riparian areas; regulations(a) The commissioner shall protect riparian areas from the significant adverse effects of timber harvest activities on fish habitat and water quality. The management intent for riparian areas is the adequate preservation of fish habitat by maintaining a short- and long-term source of large woody debris, stream bank stability, channel morphology, water temperatures, stream flows, water quality, adequate nutrient cycling, food sources, clean spawning gravels, and sunlight.(b) The commissioner shall adopt regulations for the protection of riparian areas; the regulations may include higher standards of protection for fish and other public resources on land managed by the department than on other public land or private land. The regulations may vary by region of the state and must take into consideration reasonable classification of water bodies and the economic feasibility of timber operations.