Quote:
Originally Posted by freebeard
The bottom fills with water? That doesn't explain the shape, the higher elevation in the middle and the lack of debris downstream. Where was the source of water at the end of each 'finger'.
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* when there's a rain event, they'll be wet until it either soaks in or runs off downgrade.
* between rain they're arroyos mostly upstream. Our Clear Creek, next to my home is almost an arroyo right now. Some years you can walk across the lakes.
* Your 'L' formation needs topographical elevation lines from the time of formation. It's right next door to what were active volcanoes, and whatever the underlying magma chamber did at the time of formation, would have had an impact on 'drainage' due to crustal inflation/ deflation.