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Full-Text Articles in Social and Behavioral Sciences
Variability Of Sediment Removal In A Semi-Arid Watershed, William L. Graf
Variability Of Sediment Removal In A Semi-Arid Watershed, William L. Graf
William L. Graf
Field and documentary data from Walnut Gulch Watershed, an instrumented semiarid drainage basin of approximately 150 km2 (57 mi2) in southeastern Arizona, show that 83% of the alluvium removed from the basin during a 15‐year erosion episode beginning about 1930 was excavated from the highest‐order stream. The amount of alluvium removed in the erosion episode would have been equal to a covering of about 4 cm (1.6 in) over the entire basin. The rate of sediment removal during the erosion episode was 18 times greater than the rate of present channel sediment transport. Production of sediment from slopes and channel …
Minimum Flow Rules For South Carolina Rivers, William L. Graf
Minimum Flow Rules For South Carolina Rivers, William L. Graf
William L. Graf
No abstract provided.
A Probabilistic Approach To The Spatial Assessment Of River Channel Instability, William L. Graf
A Probabilistic Approach To The Spatial Assessment Of River Channel Instability, William L. Graf
William L. Graf
The deterministic approach to the analysis of river channel instability has not proved to be a completely useful basis for geographic predictions of channel behavior. Economic estimates for benefits of structural channel control projects commonly account for flood inundation, but in arid and semiarid regions these estimates are incomplete because they fail to take into account destructive channel migration and erosion. As a solution, a method whereby historical records of channel locations are reduced to spatially defined probabilistic functions allows calculation of the probability that given parcels of near-channel terrain will be destroyed by erosion. The probability of erosion for …
Downstream Geomorphic Impacts Of Large American Dams, William L. Graf
Downstream Geomorphic Impacts Of Large American Dams, William L. Graf
William L. Graf
No abstract provided.