Beginning at a point on the west bank of Albert Slough at the confluence of said slough and Boom Slough; thence southwesterly along the west bank of Boom Slough to the confluence of said slough and Boom-Crooked Cutoff Slough; thence westerly along the north bank of Boom-Crooked Cutoff Slough to the confluence of said slough and Crooked Slough; thence southwesterly along the north bank of Crooked Slough to the confluence of said slough and Deepwater Slough and east Branch Freshwater-Deepwater Cutoff Slough; thence northwesterly along the north bank of east Branch Freshwater-Deepwater Cutoff Slough to the confluence of said slough and the east Branch Freshwater Slough; thence northerly along the east bank of east Branch Freshwater Slough to the confluence of said slough and Gilbert Hansen Slough; thence northeasterly along the south bank of Gilbert Hansen Slough to the confluence of said slough and Deepwater Slough; thence northeasterly along the south bank of Deepwater Slough to the confluence of said slough and Albert Slough; thence southeasterly along the west bank of Albert Slough to the point of beginning.