. Biennial report of the Southeastern Forest Experiment Station for the years 1947 and 1948. Forests and forestry Southern States. These streamflow records of August 2, 1948, show the differences in the storm runoff patterns from three experimental watersheds at the Coweeta Hydrologic Laboratory. All three watersheds were first studied together while still under natural undisturbed forest cover and during this period their stormflow records were almost identical. Consequently, the hydrograph for the forested watershed shown above represents the storm runoff that would have occurred from all th
. Biennial report of the Southeastern Forest Experiment Station for the years 1947 and 1948. Forests and forestry Southern States. These streamflow records of August 2, 1948, show the differences in the storm runoff patterns from three experimental watersheds at the Coweeta Hydrologic Laboratory. All three watersheds were first studied together while still under natural undisturbed forest cover and during this period their stormflow records were almost identical. Consequently, the hydrograph for the forested watershed shown above represents the storm runoff that would have occurred from all three watersheds had not experimental treatments been put into effect. In 1940, one of the watersheds was cleared and subsequently operated as a small mountain farm. Since then about one-third has been cultivated in corn, one-third used as pasture, and the remainder has grown up in sprouts and brush. The peak discharge for the storm shown above was at a rate of 141 (cubic feet per second per square mile). The maximum peak ever recorded for this watershed since cultivation has been 400 A bridge opening would have to be about 20 feet wide and 10 feet high to carry this amount of water for one square mile of watershed. On the second watershed, logging was carried out at intervals from 1942 to 1948. During this time a logging road system of miles was built into the watershed and numerous skid trails were developed. Local unsupervised logging practices were permitted and no efforts were made to control erosion and prevent concentration of water in the ruts. These haul roads and skid trails are directly responsible for the increased storm runoff. The storm record shows a peak discharge from the logged-over watershed of 77 , as compared with 34 for the undisturbed, forested control watershed. - 32 -. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of thes
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Keywords: ., bo, bookcentury1900, booksubjectforestsandforestrysouthernstates
