Virginia Institute of Marine Science
The data inventory developed for the Shoreline Situation Reports are based on a three-tiered shoreline assessment approach. This assessment characterizes conditions in the shorezone observed from a small boat moving along the shoreline. Handheld GPS units record data observations in the field. The three tiered shoreline assessment approach divides the shorezone into three regions:
the immediate riparian zone, evaluated for land use
the bank, evaluated for height, stability and natural protection
the shoreline, describing the presence of shoreline structures for shore protection and recreational purposes.
Three GIS coverages are generated from the collection technique. The Mathews_lubc coverage are features related to the land use in the riparian zone, and conditions at the bank. The Mathews_sstruc coverage includes information pertaining to structures for shoreline defense. Finally, Mathews_astruc identifies structures which are typically built for access and recreational activities at the shore. They can be downloaded from this site through links at the bottom of this page. A metadata file is provided to describe each coverage.
The GIS coverages use a digitized 1:24,000 scale USGS high water line (HWL) shoreline as the baseline coverage. However, if the position of the digitized HWL differs greatly from the observed shoreline on a 1994 color infra-red digital ortho quarter quadrangle (DOQQ), the shoreline position is corrected to align more closely with the land-water interface observed in the DOQQ. Using ArcInfo, the base shoreline is re-coded with the attributes defined in each coverage.
Shoreline Inventories, Virginia, GIS, Management, Data
Special report in Applied Marine Science and Ocean Engineering No. 411
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 by the National Fish and Wildlife Foundation through Grant Number 2007-0081-014.
Berman, Marcia; Berquist, Harry; Killeen, Sharon; Hershner, Carl; Nunez, Karinna; Reay, Karen; Rudnicky, Tamia; Schatt, Daniel E.; and Weiss, David, "GIS Data: Mathews County, Virginia Shoreline Inventory Report Methods and Guidelines" (2009). Data. William & Mary.