The present method used to calculate sediment loading from tidal shoreline erosion that is input to the Chesapeake Bay Water Quality Model consists of a single estimated split between bank and nearshore (shallow water area at base of bank) erosion.
The assumptions from previous work used the best available information but applying a 65%:35% bank/nearshore sediment contribution is clearly not the case along many shore reaches. Determining the nature of the downcutting on nearshore strata is crucial to the evaluation of the 65%:35% split and therefore sediment contributions from shore erosion.
- Hardaway, C.S., Jr., D.A. Milligan, L.M. Varnell, and J. Herman. 2009. Tidal sediment yield estimate methodology in Virginia for the Chesapeake Bay Program Water Quality Model. Data report submitted to CBP from Shoreline Studies Program, Virginia Institute of Marine Science, College of William and Mary, Gloucester Point, VA. 26p.