
The agricultural and technical landscape of Boulder County is defined here by a dense network of irrigation and aviation infrastructure. St Vrain Creek bisects the area, feeding an intricate system of waterways including the Supply Ditch, Highland Ditch, and Oligarchy DITCH. These water rights supported the growth of settlements like Hygiene and the northwestern expansion of Longmont. Notable landmarks such as Ryssby Ch reflect the area's cultural heritage, while the presence of the Longmont Municipal Airport and numerous Antenna Field Sites on Table Mountain indicate a shift toward modern telecommunications and scientific research in the late 1960s. The terrain is marked by prominent ridges like Rabbit Mountain and the Hogback, overlooking dozens of artificial reservoirs like McIntosh Lake and Clover Basin Reservoir that sustain the region's semi-arid valley floor.
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5 editions found
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