Letchworth Gorge, the "Grand Canyon of the east," is the 22-mile section of the Genesee River between Portageville and Mt. Morris that is now under state protection as Letchworth State Park. It is a portion of the river whose meandering course has been deeply incised into the plateau since the end of the Ice Age, producing remarkably narrow, winding bedrock canyons at either end with nearly vertical walls. The upper canyon at the Portageville end contains three major cataracts, and the Mt. Morris Highbacks canyon at the lower end is the site of the Mt. Morris flood-control dam. In the central section, the river now occupies a preglacial valley with high, but gently-sloping sides; it meanders over a moderately broad flood plain.
There you have it. It ain't a 'grand canyon', but its not bad. Let's go to the pics:
Letchworth Gorge Canyon |
Letchworth Gorge Canyon |
Letchworth Gorge Canyon Below Lower Falls |
Lower Falls 70-foot drop |
Middle Falls 107-foot drop |
Norfolk Southern Railroad Trestle Above Upper Falls |
Upper Falls 71-foot drop |
Three falls formed rather than one probably because at the end of the ice age, meltwater lakes formed downstream that controlled the base level of erosion in the gorge. The upper falls formed when the river spilled over a scarp (a steep slope) at the edge of the lake. As the lake receded, the middle and lower falls formed as the river fell over newly-exposed scarps.
Mileage: 229. Cumulative mileage: 6,113.