Lake-Sediment-Based Evaluation of Recent Sediment Yield From a Small Appalachian Watershed, Thompson Lake, Virginia

Modeling stream-bank erosion in the Southern Blue Ridge Mountains

“…Analytical errors involved with the studies of Royall (2000Royall ( , 2003 and Simmons (1993) are not reported, but the authors did mention concerns of error. Simmons mentioned a limitation with regard to the time of the study, which was characterized by higher than normal stream discharge (1970-1979 study versus 30-year averages from1950 to 1979), but it is uncertain how this would have affected bankerosion rates in the fully forested watershed he studied.…”

“…Simmons mentioned a limitation with regard to the time of the study, which was characterized by higher than normal stream discharge (1970-1979 study versus 30-year averages from1950 to 1979), but it is uncertain how this would have affected bankerosion rates in the fully forested watershed he studied. Royall (2000) indicated that the primary factor controlling sediment yield fluctuation was related to long-term hydrologic discharge from variation in precipitation. However, during the 29 years of lake sediment accumulation, when these discharges fluctuated broadly, mean discharges remained moderate.…”

“…In fully forested basins, stream channels (banks and beds) contribute the majority of sediment yield, although other, minor sources include tree throws, mass wasting, and animal burrowing. We identified five fully forested watershed sediment yield studies nearby, including three by Simmons (1993;Bee Tree Creek, Cataloochee Creek, and Nantahala River) and two by Royall (2000Royall ( , 2003 watersheds of Deer and Thompson Lakes).…”

A Fifty-Year Record of Historical Sedimentation at Deer Lake, North Carolina

“…Zonal sediment masses were corrected for trap efficiency and lake-bank erosion based on lake-bank retreat estimates and the monograph of Dearing and Foster (1986). Lake-bank erosion rates are rarely available, and because no monitoring of lakebank erosional retreat could be performed, a value of 3.5 cm yr À1 -the midpoint of the range found by Royall (2000) for a slightly larger lake in Virginia-was used. Sediment contributions from airborne mineral particulate fallout, which is typically low in forested environments, and biogenic silica inputs, which were expected to be low in this former reservoir, were not measured.…”

Sediment sources and the flood record from Wanghu lake, in the middle reaches of the Yangtze River

“…Sediment yield has been related to precipitation histories (Lamoureux, 2000;Royall, 2000) and peak flows (Evans et al, 2000) whilst sedimentary facies have been used to reconstruct ancient variations in discharge (Alexander et al, 1999) and inorganic sediment layers to determine hydrological events through the Holocene (Brown et al, 2000;Nesje et al, 2001). Lacustrine sedimentary sequences have been used to infer the magnitude and frequency of flood events through the Late Pleistocene to the Holocene in Australia (Kos, 2001) and in the Holocene in the USA (Pederson, 2000), northwestern Russia (Gey et al, 2001) and in China (Zhu et al, 1997;Yang et al, 2000;Yin et al, 2001).…”