The S-Fork Little Conemaugh River carves a path through this part of the Allegheny Plateau, anchoring a dense string of industrial-era settlements including Beaverdale, Lloydell, and Dunlo. This 2016 survey illustrates a landscape deeply shaped by the region's coal and water heritage, where small towns like Llanfair and Onnalinda are tucked between steep ridgelines and creek valleys. Notable infrastructure such as the Beaverdale Reservoir and Portage Reservoir highlights the managed water systems essential to the area's development.
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1902 · Ebensburg
USGS Topo · 1:62,500
1904 · Ebensburg
USGS Topo · 1:62,500
1904 · Johnstown
USGS Topo · 1:62,500
1907 · Johnstown
USGS Topo · 1:62,500
1908 · Bedford
USGS Topo · 1:62,500
1910 · Bedford
USGS Topo · 1:62,500
1914 · Windber
USGS Topo · 1:62,500
1916 · Windber
USGS Topo · 1:62,500
1944 · Windber
USGS Topo · 1:62,500
1953 · Pittsburgh
USGS Topo · 1:250,000