Document Type

Data

Department/Program

Virginia Institute of Marine Science

VIMS Department/Program

Center for Coastal Resources Management (CCRM)

Publication Date

2021

Abstract

The shoreline inventory files have been generated to support the application of the Maryland Shoreline Stabilization Model (SSM), developed by the Center for Coastal Resources Management (CCRM), Virginia Institute of Marine Science (VIMS), to enhance and streamline regulatory decision making in Maryland. This shoreline inventory includes the features needed as inputs to run the SSM.

The data developed for the Shoreline Inventory is based on a three-tiered shoreline assessment approach. This assessment characterizes conditions by using observations made remotely at the desktop using high resolution imagery. 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, and natural protection (i.e., marshes and beaches); and 3) the shoreline, describing the presence of shoreline structures for shore protection and recreational purposes.

The 2020 Inventory for Calvert County was generated using on-screen, digitizing techniques in ArcGIS® - ArcMap v10.6.1 while viewing conditions observed in MD Six Inch Imagery 2016/2017. Three GIS shapefiles are developed. The first describes land use and bank conditions (Calvert_lubc_2020). The second reports shoreline structures that are described as arcs or lines (Calvert_sstru_2020). The final shapefile includes all structures that are represented as points (Calvert_astru_2020). The shapefiles use a shoreline basemap from the NOAA CUSP shoreline (2011), which it is updated in-house by using the MD Six Inch Imagery 2016/2017 to reflect the most current land-water interface position. The shoreline is re-coded to reflect features and attributes observed. The metadata file accompanies the shapefiles and defines attribute accuracy, data development, and any use restrictions that pertain to data.

DOI

https://doi.org/10.25773/apcx-e188

Keywords

Shoreline Inventories, Maryland, GIS, Data, Management

Publication Statement

This product was developed by the Center for Coastal Resources Management, at the Virginia Institute of Marine Science, William & Mary, for the Maryland Department of the Environment, and has been funded wholly or in part by the United States Environmental Protection Agency under assistance agreement CD-963623-01-1 to the Maryland Department of the Environment. The contents of this dataset do not necessarily reflect the views and policies of the Environmental Protection Agency, nor does the EPA endorse trade names or recommend the use of commercial products mentioned in this dataset. 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.

Funding

This project has been funded wholly or in part by the United States Environmental Protection Agency State Wetland Program Development Grant CD-963623-01-1 to the Maryland Department of the Environment.

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