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SCHENECTADY DIGITAL HISTORY ARCHIVE

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History of the Mohawk Valley: Gateway to the West 1614-1925
Mohawk River Drainage Maps

[This information is from Vol. I, p. 85 of History of the Mohawk Valley: Gateway to the West 1614-1925, edited by Nelson Greene (Chicago: The S. J. Clarke Publishing Company, 1925). It is in the Reference collection of the Schenectady County Public Library at R 974.7 G81h. This online edition includes lists of portraits, maps and illustrations. As noted by Paul Keesler in his article, "The Much Maligned Mr. Greene," some information in this book has been superseded by later research or was provided incorrectly by local sources.]

Contents | Biographies | Illustrations | Maps | Portraits

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Series of maps illustrating drainage along the Mohawk River in various periods.

Mohawk River Pre-Glacial Drainage Map

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Fig. 1. Showing probable pre-glacial drainage of the lower Mohawk River outlet section. (X) marks present site of Schenectady. Labels include Glenville basin stream, Ballston channel stream and Stream draining Saratoga-Round Lake depression.

Mohawk River Post-Glacial Drainage Map

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Fig. 2. Sketch map showing the distribution of land and water on the areas of the Schenectady and Cohoes quadrangles when Lake Albany was at the height of its development, its level corresponding to the present 360-foot contour. This was one of the early stages following recession of the glacier from the Mohawk Valley. Labels include Mohawk delta (Schenectady) and Hoosic delta (Schaghticoke).

Mohawk River Post-Glacial Drainage Map

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Fig. 3. Sketch map showing areal extent of Lake Albany and drainage courses on the areas of the Schenectady and Cohoes quadrangles at the time when the Lake Albany waters had subsided to the level represented by the present 320-foot contour. Labels include Iroquois Mohawk, East Line, Aqueduct, Vischer Ferry and Hoosic River.

Schenectady and Cohoes Post-Glacial Drainage Map (Present Day)

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Fig. 4. Sketch map showing Lake Albany and drainage courses on the areas of the Schenectady and Cohoes quadrangles when the lake waters had subsided to the level represented by the present 240-foot contour. Labels include Iroquois Mohawk, High Mills, East Line, Gorge (nascent), Mechanicville and Hoosic River.

Schenectady and Cohoes Post-Glacial Drainage Map (Present Day)

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Fig. 5. Sketch map showing drainage of the areas of the Schenectady and Cohoes quadrangles and breadth of waters occupying valleys when Lake Albany had receded to the level represented by the present 100-foot contour line and had taken on the character of a broad river. The Mohawk River had lowered its gorge at Aqueduct to the 300-foot level. Labels include Schenectady Basin, Ballston Lake, Aqueduct, Round Lake, Anthony Kill, Mechanicville, Hudson River, Hoosic River and Schaghticoke.

Relief Map of the Cohoes Region of the Mohawk River

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Fig. 6. Block diagram of the Cohoes region of the lower Mohawk. (X) marks site of Pothole where Cohoes Mastodon was found. Labels include Residual Clays, Bared Rocks and Lake Albany Clays.

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