For the purposes of administering this chapter, the boundaries of the Stillaguamish River basin contained in the figure below are presumed to accurately reflect the basin hydrology unless demonstrated otherwise.

Figure 2

[Statutory Authority: Chapters 43.27A, 90.54, 90.22, and 90.82 RCW. WSR 05-18-016 (Order 02-17), § 173-505-180, filed 8/26/05, effective 9/26/05.]