Oregon Administrative Rules
Chapter 141 - DEPARTMENT OF STATE LANDS
Division 102 - OREGON ESSENTIAL INDIGENOUS ANADROMOUS SALMONID HABITAT
Section 141-102-0020 - Definitions

(1) "Essential" means those portions of a stream reach that fill all or part of the basic or indispensable spawning or rearing needs of indigenous anadromous salmonids and are those areas necessary to prevent the depletion of indigenous anadromous salmonids. Such areas include "spawning habitat" and "rearing habitat" as defined below under sections (3) and (4) of this rule (Oregon Fish Habitat Distribution Data Standard, Version 2.0, February 2011: http://www.oregon.gov/DAS/CIO/GEO/standards/docs/oregonfishhabitatdistributiondatastandardv2.pdf).

(2) "Indigenous anadromous salmonid" means chum, sockeye, Chinook and Coho Salmon, and steelhead and cutthroat trout, that are members of the family of Salmonidae and are listed as sensitive, threatened or endangered by a state or federal authority.

(3) "Spawning Habitat" " includes areas where eggs are deposited and fertilized. For some species, including salmonids, this also includes areas where gravel emergence occurs and where at least some juvenile development occurs.

(4) "Rearing Habitat" includes areas outside primary spawning habitats where juvenile fish take up residence during some stage of juvenile development and use the area for feeding, shelter, and growth. Some migration also occurs as juvenile and adult fish move between the ocean and spawning grounds.