
Grand Lake serves as the gateway to this high-altitude landscape, where the headwaters of the Colorado River meet a complex mid-century water management network. The map documents the intricate hydraulic engineering of the Colorado-Big Thompson Project, featuring the Alva B Adams Tunnel, the Granby Pumping Plant, and the Lehman Ditch. These man-made features connect the natural expanse of Shadow Mountain Lake and Lake Granby, illustrating how the region's geography was reshaped for water diversion and power.
58 named features on this map. Tap any name to fly to it.
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5 editions found
1915 · Longs Peak
USGS Topo · 1:125,000
1919 · Rocky Mountain National Park
USGS Topo · 1:125,000
1954 · Greeley
USGS Topo · 1:250,000
1957 · Greeley
USGS Topo · 1:250,000
1957 · Mc Henrys Peak
USGS Topo · 1:24,000
1957 · Bowen Mountain
USGS Topo · 1:24,000
1957 · Trail Mountain
USGS Topo · 1:24,000
1957 · Granby
USGS Topo · 1:24,000
1958 · Greeley
USGS Topo · 1:250,000
1958 · Strawberry Lake
USGS Topo · 1:24,000