
First Fork Sinnemahoning Creek carves a deep valley through this timbered landscape, which is dominated by the Susquehanna State Forest and Elk State Forest. The settlement of Wharton sits at the confluence with the East Fork Sinnemahoning Cr, while the village of Costello occupies the junction of Freeman Run and the First Fork. The terrain is marked by numerous steep hollows like Big Canyon Hol and Fish Basket Hol, reflecting the area's history as a rugged forestry and extraction region. Evidence of early industry remains in the presence of a Splash Dam and a Gas Well, alongside several local landmarks like the Reesville Sch and St Josephs Cem. To the south, Sinnemahoning State Park preserves the natural character of the river valley near the Potter and Cameron county line.
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1945 · Driftwood
USGS Topo · 1:48,000
1945 · First Fork
USGS Topo · 1:24,000
1945 · Cameron
USGS Topo · 1:24,000
1946 · Renovo West
USGS Topo · 1:62,500
1946 · Hammersley Fork
USGS Topo · 1:24,000
1947 · Cameron
USGS Topo · 1:24,000
1947 · First Fork
USGS Topo · 1:24,000
1947 · Conrad
USGS Topo · 1:62,500
1947 · Conrad
USGS Topo · 1:24,000
1947 · Ayers Hill
USGS Topo · 1:24,000