Steelhead (Upper Willamette River DPS)

Critical habitat includes the stream channels within the designated stream reaches, and includes a lateral extent as defined by the ordinary high-water line (33 CFR 319.11). In areas where ordinary high-water line has not been defined, the lateral extent is defined by the bankfull elevation. Bankfull elevation is the level at which water begins to leave the channel and move into the floodplain...

关键栖息地包括指定河流段内的溪流渠道，其横向范围由普通高水位线（33 CFR 319.11）界定。在普通高水位线尚未确立的地区，横向范围则由满水位高度确定。满水位高度是指水体开始从渠道溢出并流入洪泛区的水平面。