Finger Lakes and Channeled Scablands share identical catastrophic flood origin despite geographic separation. Finger Lakes and Grand Coulee both approximately 20-21 miles long Both created by catastrophic flood flows Scablands eroded into basalt bedrock; Finger Lakes into shale bedrock

The Finger Lakes and Channeled Scablands/Grand Coulee represent dramatically different scales and origins. Grand Coulee is ~50-60 miles long, the Channeled Scablands covers ~2,000 sq miles, while individual Finger Lakes range from 10-40+ miles long. Both regions were shaped by water, but the Finger Lakes were carved by glacial activity (~15,000 years ago) while the Scablands were created by repeated Missoula outburst floods. Different bedrock (basalt vs shale) — same water, different process and scale. Not a valid parallel!

Key facts claimed:

- Grand Coulee is ~50-60 miles long, while individual Finger Lakes range 10-40+ miles

- Finger Lakes carved by glacial activity; Scablands created by Missoula outburst floods

- Scablands eroded into basalt bedrock; Finger Lakes into shale bedrock

- Different post-flood environments: 15 inches annual rainfall at Grand Coulee vs 50+ inches in western New York

- Different types of features with different catastrophic origins

Key Facts

  • Finger Lakes and Grand Coulee both approximately 20-21 miles long
  • Both created by catastrophic flood flows
  • Scablands eroded into basalt bedrock; Finger Lakes into shale bedrock
  • Different post-flood environments: 15 inches annual rainfall at Grand Coulee vs 50+ inches in western New York
  • Same type of feature with same catastrophic origin