The Pawnee National Grassland dominates this section of Weld County, Colorado, where the high plains transition through dramatic geological breaks. The defining escarpment of the Chalk Bluffs and landmarks like Squaw Rock overlook a landscape carved by ephemeral drainages including Simpson Creek and the North Fork Geary Creek. This area remains largely dedicated to ranching and conservation, marked by scattered water improvements essential for livestock and wildlife on the arid range.
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1908 · Eaton
USGS Topo · 1:125,000
1910 · Eaton
USGS Topo · 1:125,000
1911 · Cheyenne
USGS Topo · 1:125,000
1914 · Cheyenne
USGS Topo · 1:125,000
1954 · Cheyenne
USGS Topo · 1:250,000
1954 · Greeley
USGS Topo · 1:250,000
1957 · Greeley
USGS Topo · 1:250,000
1958 · Cheyenne
USGS Topo · 1:250,000
1958 · Greeley
USGS Topo · 1:250,000
1961 · Greeley
USGS Topo · 1:250,000