Virginia Institute of Marine Science
Special report in Applied Marine Science and Ocean Engineering No. 418
The data inventory developed for the Shoreline Inventory is based on a three‑tiered shoreline assessment approach. In most cases this assessment characterizes conditions that can be observed from a small boat navigating along the shoreline. The three tiered shoreline assessment approach divides the shorezone into three regions: 1) the immediate riparian zone, evaluated for land use; 2) the bank, evaluated for height, stability, cover and natural protection; and 3) the shoreline, describing the presence of shoreline structures for shore protection and recreational purposes. Hand-held GPS units are used to log features observed in the field.
Three GIS coverages are developed from the GPS field files. The first describes land use and bank conditions (pwill_lubc). The second reports shoreline structures that are collected as arcs or lines (pwill_sstru). The final coverage includes all structures that are represented as points (pwill_astru).
The coverages use a shoreline basemap generated in-house from the Virginia Base Mapping Program’s high resolution digital terrain model from 2009. The shoreline is re‑coded to reflect features and attributes observed in the field. The metadata file accompanies the coverages and defines attribute accuracy, data development, and any use restrictions that pertain to data.
Shoreline Management, Virginia, GIS Model
Disclaimer: The Center for Coastal Resources Management (CCRM) provides these data with the understanding that they are not guaranteed to be correct or complete, and conclusions drawn from the data set are the sole responsibility of the user. Every attempt has been made to ensure that these data and the documentation are reliable and accurate. CCRM, the Virginia Institute of Marine Science (VIMS), and the Commonwealth of Virginia assume no liability for any damages caused by inaccuracies in the data or documentation; and make no warranty, express or implied, as to the accuracy, completeness, or utility of this information, nor does the fact of distribution constitute a warranty.
This project was funded in part by the Virginia Coastal Zone Management Program at the Department of Environmental Quality through Grant # NA09NOS4190163 of the U.S. Department of Commerce, National Oceanic and Atmospheric Administration, under the Coastal Zone Management Act of 1972, as amended.
Berman, M.R., Berquist, H., Killeen, S., Hershner, C., Nunez, K., Reay, K., Rudnicky, T., 2010. Prince William County, Virginia - Shoreline Inventory Report, Comprehensive Coastal Inventory Program, Virginia Institute of Marine Science, College of William and Mary, Gloucester Point, Virginia, 23062