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The 1895 Washington State legislature authorized counties to establish diking and drainage districts. These districts, formed by citizen petition, were authorized to sell bonds and levy tax assessments to raise funds for flood control measures within the districts.

Part of the documentation prepared by King County drainage districts included topographic maps of the area covered by the districts. This series includes topographic maps of drainage districts 8 (White [Stuck] River near Algona-Pacific City), 9 (Sammamish River near Kenmore-Hollywood), 10 (Snoqualmie River near Duvall) and 11 (Green River near Auburn). The maps show fence lines, roads, drainage ditches and streams, as well as buildings. Proper names or other reference points rarely appear on these maps. Scale 1" = 200'


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