Watershed Geomorphology. Motivation. Effect of water on landscape: Whereas hydrologists are mostly concerned with the movement of water, a common task is to assess the impact of water flow on the transport of materials – sediment and solutes Effect of landscape on water
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Water, sediment, and solutes are byproducts of watershed processing
Why do watersheds appear similar Visually AND statistically?
Ratios tend to be similar for all rivers
Horton’s Laws of Drainage Networks
Law of stream areas
Law of stream lengths
L = CA0.6
Exponent tends to be near 0.6 for all rivers. What does this mean?
WITHIN a drainage basins, bankfull flow tends to scale log-linearly with area.
b 0.1-0.2 0.5
f 0.4 0.33-0.4
m 0.4-0.5 0.10-0.17
Cumulative Area Distribution
What are the implications?