. Glacial formations and drainage features of the Erie and Ohio basins. northward acrosswestern New York, entering LakeOntario a few miles north of thecity of Rochester. The accom-panying- map (fig. 8), prepared byFairchild, shows the leading fea-tures. The drainage basin is about100 miles long and perhaps 40miles wide. It is broadest in thenorthern half, the southern end fora distance of about 35 miles fromthe head of the basin being but 10to 20 miles wide. The area of thedrainage basin is estimated by Raf-ter to be 2,445 square The upland surface at the headof this drainage system at
. Glacial formations and drainage features of the Erie and Ohio basins. northward acrosswestern New York, entering LakeOntario a few miles north of thecity of Rochester. The accom-panying- map (fig. 8), prepared byFairchild, shows the leading fea-tures. The drainage basin is about100 miles long and perhaps 40miles wide. It is broadest in thenorthern half, the southern end fora distance of about 35 miles fromthe head of the basin being but 10to 20 miles wide. The area of thedrainage basin is estimated by Raf-ter to be 2,445 square The upland surface at the headof this drainage system attains analtitude of about 2,500 feet, biUthere are passes connecting theheadwaters of the Genesee with theheadwaters of the Allegheny andwith branches of the Susquehannathat are 250 to 400 feet lower thanthe high uplands. One of thesenear Bingham, Pa., is 2,174 feet;another near Ulysses is 2,252 feet;and one near Gold is 2,228 feet(Fairchild). There is a still lowerpass (2,068 feet) connecting theWest Branch of Genesee River with the head of Oswayo Creek, a tributary. Fig. S.—Hydrography of the Genesee Valley, by H. L. map is reproduced from Fairchilds paper in the Bulletinof the Geological Society of America, Vol. VII, 1895, PI. XIX,Water partingsare shown by heavy broken lines. Glacial lakeoutlets are indicated by bars transverse to the water indicate altitude above mean tide, Water-Supply Paper U. S. Geol. Survey No. 24, 1899, p. 26. 202 GLACIAL FORMATIONS OF ERIE AND OHIO BASINS. of the Allegheny River. There are other passes at the lieads of tributarieswhich are markedly lower than the passes at the head of the drainage lowest connecting with the Allegheny drainage is near Cuba, New York,1,496 feet above tide; but one near the New York and Pennsylvania Stateline, connecting with Honeoye Creek, a tributary of Oswayo Creek, is only1,600 feet. The lowest pass connecting with the Susquehanna is at Biu-us,N. Y, 1,210 feet. In the south
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectgeology, bookyear1902
