The West Branch Delaware River carves a deep valley through this portion of Delaware County, serving as the primary corridor for settlements like Walton, Colchester, and Hawleys. The surrounding landscape is defined by a dense network of hollows and ridges, such as Mac Gibbon Hollow and Chambers Hollow, which channel numerous tributaries like Mallory Brook and Weeds Brook toward the main river. High points including Bear Spring Mtn and Mt Holly dominate the southern reaches, illustrating the steep vertical relief of the Catskills region.
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1909 · Delhi
USGS Topo · 1:62,500
1911 · Delhi
USGS Topo · 1:62,500
1915 · Oneonta
USGS Topo · 1:62,500
1918 · Oneonta
USGS Topo · 1:62,500
1922 · Andes
USGS Topo · 1:62,500
1923 · Walton
USGS Topo · 1:48,000
1924 · Andes
USGS Topo · 1:62,500
1925 · Walton
USGS Topo · 1:62,500
1943 · Delhi
USGS Topo · 1:24,000
1943 · Franklin
USGS Topo · 1:24,000