The community of Hygiene sits at the center of an intricate network of irrigation ditches and reservoirs, reflecting the agricultural heritage of the St. Vrain Valley. This landscape is defined by its water management, where the Saint Vrain Creek feeds a complex system including the Oligarchy Ditch, Rough and Ready Ditch, and Supply Ditch. These waterways support numerous reservoirs such as McIntosh Lake, McCall Lake, and Clover Basin Reservoir, which dot the plains between the prominent elevations of Rabbit Mountain and Table Mountain.
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1902 · Boulder
USGS Topo · 1:62,500
1904 · Niwot
USGS Topo · 1:62,500
1904 · Boulder
USGS Topo · 1:62,500
1905 · Mount Olympus
USGS Topo · 1:62,500
1906 · Loveland
USGS Topo · 1:62,500
1907 · Mount Olympus
USGS Topo · 1:62,500
1908 · Loveland
USGS Topo · 1:62,500
1950 · Hygiene
USGS Topo · 1:24,000
1950 · Erie
USGS Topo · 1:24,000
1950 · Niwot
USGS Topo · 1:24,000