There shall be no removal or deposition of material, on lots or open
lands in any district, within 100 feet of the mean high-water mark
of the Hudson River, nor within 50 feet of the normal water edge of
the main and tributary branches of Fishkill, Clove and Sprout Creeks,
nor within 30 feet of any other watercourse designated on the Town
Open Space and Natural Resource Index, except as hereinafter provided.
Distances shall be measured horizontally.