SalmonChinook_LowerColumbiaRiverESU_20050902

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道内的溪流通道，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界定之区域，横向范围则由满水位高度确定。满水位高度是指水流开始脱离河道并进入洪泛区的水位水平。