Geographical definitions—River mouths.
Unless otherwise defined, any reference to the mouths of rivers or streams shall be construed to include those waters of any river or stream, including sloughs and tributaries, upstream and inside of a line projected between the outermost uplands at the mouth. The term "outermost upland" shall be construed to mean those lands not covered by water during an ordinary high tide.
[Statutory Authority: RCW 77.04.012
, and 77.12.047
. WSR 17-05-112 (Order 17-04), recodified as § 220-300-060, filed 2/15/17, effective 3/18/17; Order 817, § 220-16-245, filed 5/29/69. Formerly WAC 220-16-020 (part).]