20251208
09460500
1.0
FALSE
AllMD_NoMarsh_LS_Final_Dec_05_2025
1.928
351136.031200
379258.156100
4286006.103500
4344337.540200
1
002
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GCS_North_American_1983
Linear Unit: Meter (1.000000)
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Tamia Rudnicky
Comprehensive Coastal Inventory Program, Center for Coastal Resources Management, Virginia Institute of Marine Science
(804) 684-7181
P.O. Box 1346
Gloucester Point
Virginia
23062
US
ArcGIS Metadata
1.0
Anne Arundel County, Maryland - Living Shoreline Suitability Model (LSSM)
2021-06-26T00:00:00
2022-02-28T00:00:00
Center for Coastal Resources Management, Virginia Institute of Marine Science (VIMS)
PO Box 1346
Gloucester Point
Virginia
23062
US
1375 Greate Road
vector digital data
Center for Coastal Resources Management. 2021. Maryland Living Shoreline Suitability Model. Center for Coastal Resources Management, Virginia Institute of Marine Science, College of William and Mary, Gloucester Point, Virginia.
Tammy K. Roberson
Maryland Department of the Environment
1800 Washington Boulevard
Baltimore
Maryland
21230
tammy.roberson@maryland.gov
US
410-537-3522
<DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 0 0;"><SPAN>This geospatial dataset is the output generated by applying the Maryland Living Shoreline Suitability Model (LSSM), a modification of the Virginia Shoreline Management Model (SMM), developed by the Center for Coastal Resources Management (CCRM), Virginia Institute of Marine Science (VIMS), in the tidal shoreline of Anne Arundel County, MD. The application of the LSSM has the purpose to enhance and streamline regulatory decision making in Maryland by identifying shoreline best management practices for tidal shoreline erosion control.</SPAN></P><P /><P STYLE="margin:0 0 14 0;"><SPAN>The LSSM compiles twelve attributes from various databases: land use, shoreline structures, bank height, tidal marshes, beaches, fetch, roads, permanent structures, bathymetry, submerged aquatic vegetation(SAV), sensitive species, and federal navigation channels. They are all integrated through a series of model pre-steps, into one linear feature. The single file was then processed through a final model to produce 3 shoreline recommendations for tidal shoreline and adjacent upland banks (Living Shoreline, Structural Shoreline Stabilization Measure, and Undetermined). All processing steps occurred in ESRI’s ArcMap versions 10.6 and 10.8, and ArcGIS Pro using models created in ArcGIS ModelBuilder or Python.</SPAN></P><P><SPAN /></P><P STYLE="margin:7 0 7 0;"><SPAN /><SPAN /></P></DIV></DIV></DIV>
To provide a recommended preferred approach for shoreline erosion control via a geospatial geospatial Living Shoreline Suitability Model that identifies where living shorelines are suitable.
Maryland, Chesapeake Bay, Anne Arundel County
ISO 19115 Topic Categories
environment
elevation
planningCadastre
geoscientificInformation
biota
Maryland Living Shoreline Suitability Model, Preferred Shoreline Best Management Practices, Living Shorelines, Shoreline Conditions, Shoreline Structures, Riparian Land Use, Shoreline Inventory, Erosion Control, Shoreline Treatments
environment
Shoreline Stabilization
Living Shoreline Suitability Model
Preferred Shoreline Best Management Practices
Living Shorelines
Shoreline Conditions
Shoreline Structures
Riparian Land Use
Shoreline Inventory
Erosion Control
Shoreline Treatments
elevation
planningCadastre
Maryland
Chesapeake Bay
Anne Arundel County
geoscientificInformation
biota
<DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>These data should be used to guide the decision making process on how best to manage an erosion problem. Recommendations are made without consideration of property length, ownership, or value. Treatment recommendations are based on models that utilize best available data which may not reflect the actual conditions present on the shoreline.</SPAN></SPAN></P><P STYLE="margin:7 0 7 0;"><SPAN>The Center for Coastal Resources Management (CCRM) at VIMS performs a service by distributing data generated by either CCRM or public agencies, which offer data without restriction or charge. CCRM assumes no responsibility for data accuracy or precision, metadata completeness or correctness for digital information. CCRM assumes no liability for misuse of any data which may arise as a result of any alteration, conversion, or combination with other data sources. As well, the timeliness and scale of these products must be considered when evaluating appropriate use. </SPAN></P><P><SPAN STYLE="font-weight:bold;">Maryland Department of the Environment (MDE) disclaimer</SPAN><SPAN>: The Mapping Services provided herein are for reference only. The user of this information understands and acknowledges that the map data may be inaccurate or contain errors or omissions, and the user assumes the full responsibility for any risks or damages resulting from any use of or reliance upon this data. Maryland Department of the Environment (MDE) and its Agents or Affiliates do not guarantee the accuracy or reliability of the data generated from this service.</SPAN></P><P><SPAN>Use of the mapping tool is strongly encouraged for preliminary planning purposes, however, its use does not guarantee the approval of any authorization or shoreline project. Please contact the MDE Tidal Wetlands Division at (410) 537-3837 for coordination on specific projects.</SPAN></P><P><SPAN><SPAN>This project has been funded wholly or in part by the United States Environmental Protection Agency under assistance agreements. The contents of this document 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 document.</SPAN></SPAN></P><P><SPAN /></P><P><SPAN /></P></DIV></DIV></DIV>
ground condition and currentness of associated datasets.
2016-10-01T00:00:00
2018-10-01T00:00:00
This project 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.
These data have been produced by the Center for Coastal Resources Management (CCRM), Virginia Institute of Marine Science (VIMS) for Maryland Department of the Environment (MDE).
Karinna Nunez
Comprehensive Coastal Inventory, Center for Coastal Resources Management, Virginia Insitute of Marine Science (VIMS)
1375 Greate Road, P.O. Box 1346
Gloucester Point
Virginia
23062
karinna@vims.edu
US
804-684-7273
Tammy K. Roberson
Maryland Department of the Environment
1800 Washington Boulevard
Baltimore
Maryland
21230
tammy.roberson@maryland.gov
US
410-537-3522
Tammy K. Roberson
Esri ArcGIS 13.5.2.57366
1
-76.724829
-76.388786
39.239952
38.710172
Topology has been checked. There are no overlapping arcs. All arcs are greater than 1m in length.
All shoreline has a recommended shoreline practice listed in the MSSM_Classification_Final (MSSMClsF) field and a definition listed in the MSSM_Classification_Final_Definition (MSSMClsDef) field. Note that data feeding this model may have different publication dates and may not reflect the actual conditon present on or near the shoreline.
Fetch data is an unpublished data source created by the Comprehensive Coastal Inventory, Center for Coastal Resources Management at the Virginia Institute of Marine Science, Gloucester Point, Virginia. This dataset provides information on shoreline exposure to potential wave energy via a distance model that measures distance to nearest shoreline along compass rose. Measurements are taken at 25 meter increments along the shoreline.
Anne Arundel County, Maryland - Shoreline Fetch
vector digital data
Center for Coastal Resources Management, Virginia Institute of Marine Science (VIMS)
PO Box 1346
Gloucester Point
Virginia
23062
US
1375 Greate Road
Center for Coastal Resources Management, Virginia Institute of Marine Science (VIMS)
Center for Coastal Resources Management, Virginia Institute of Marine Science (VIMS)
2020-07-31T00:00:00
The Maryland Shoreline Inventory is produced county by county by the Center for Coastal Resources Management at the Virginia Institute of Marine Science, Gloucester Point, Virginia. The inventory provides information on bank height, marsh presence, beach presence, riparian land cover, and public boat ramps in addition to the location of shoreline structures such as riprap and bulkhead. The shoreline used to create the Maryland shoreline inventory is used as the base shoreline for the Shoreline Suitability Model
Anne Arundel County, Maryland Shoreline Inventory
vector digital data
Center for Coastal Resources Management, Virginia Institute of Marine Science (VIMS)
PO Box 1346
Gloucester Point
Virginia
23062
US
1375 Greate Road
Center for Coastal Resources Management, Virginia Institute of Marine Science (VIMS)
Center for Coastal Resources Management, Virginia Institute of Marine Science (VIMS)
2020-06-08T00:00:00
2020-11-27T00:00:00
https://scholarworks.wm.edu/data/431/
The most recent 5 years of SAV merged together to show SAV presence. This layer is unpublished. SAV data can be downloaded from the VIMS website http://web.vims.edu/bio/sav/gis_data.html
SAV Habitat 5 Years (2015-2019)
https://www.vims.edu/research/units/programs/sav/reports/index.php
Time period of SAV data.
2014-05-20T00:00:00
2018-10-01T00:00:00
Maryland's Six Inch Imagery is used to locate permanent structures, confirm road location, and identify wide beaches.
MD_SixInchImagery
Maryland Six Inch Imagery
Six Inch resolution aerial imagery for the State of Maryland. Depending upon when a locatlity was processed, imagery referenced was either flown in 2016 or 2019 for the Eastern Shore, or 2017 or 2020 for the Western Shore.
https://geodata.md.gov/imap/rest/services/Imagery/MD_SixInchImagery/MapServer
State of Maryland imagery was flown in 2016 (Eastern Shore) and 2017 (Western Shore).
2016-05-01T00:00:00
2017-10-01T00:00:00
Roads are obtained from the U.S. Department of Commerce, U.S. Census Bureau, Geography Division. TIGER/Line Shapefile, 2019, Series Information for the All Roads County-based Shapefile for each locality processed is used. This dataset provides the location of roads and rails near the shoreline.
TIGER/Line Shapefile, {2019}, county, {Anne Arundel}, MD, All Lines County-based Shapefile
2019-06-01T00:00:00
vector digital data
https://www.census.gov/geo/maps-data/data/tiger-line.html
tl_2019_24003_rds
VIMS-CCRM Coastal Management Decision Tools created by the Center for Coastal Resources Management (CCRM), Virginia Institute of Marine Science, Gloucester Point, Virginia provides the framework for the GIS Shoreline Management Model. Online Linkage: https://www.vims.edu/ccrm/ccrmp/bmp/decision_tools/index.php
The USGS Seamless Topobathymetric Elevation Model for the Chesapeake Bay (2016) is used for bathymetry. The datasets provide the 1 meter bathymetric contour to delineate shallow water.
USGS CoNED Topobathymetric Model (1859 - 2015)
2016-05-02T00:00:00
https://www.fisheries.noaa.gov/inport/item/55321
A variety of data sets are compiled onto a polyline base shoreline. These attributes are used to determine the shoreline best management practice for erosion control.
Channel data was obtained from the U.S Army Corps of Engineers (USACE) Geospatial website's National Channel Framework (NCF) database. Navagation channels are maintained by USACE. Channels within Maryland were extracted from the entire dataset.
Channel Reach
Channel data was downloaded Feb 15, 2021.
https://geospatial-usace.opendata.arcgis.com/datasets/9227967a2748410983352b501c0c7b39_2
The RTE layer was provided as a restricted distribution for use only with the Maryland Living Shoreline Suitability Model. Data was obtained from the Maryland Department of Natural Resources, Wildlife and Heritage Services.
MDDNR_OtherRTE_MDE_LShoreTool
Tiger Beetle Habitat layer was provided as a restricted distribution for use only with the Maryland Living Shoreline Suitability Model. Data was obtained from the U.S. Fish and Wildlife Service, Chesapeake Bay Field Office; Maryland Department of Natural Resources, Wildlife and Heritage Service.
MDDNR_TBeetle_MDE_LShoreTool
Fetch is determined by creating 16 arcs based on the compass rose, radiating from points evenly spaced every 25 meters along the shoreline. The average arc length over water is calculated for the NE, SE, SW, and NW quadrants. The quadrant with the longest average fetch distance determines the fetch for the associated shoreline arc segment. Fetch is classified as low = 0-0.5 mile, moderate = 0.5-2 miles, and high = > 2 miles.
2020-07-31T00:00:00
All processing steps occur in ArcMap, ArcGIS version 10.6. Models have been created for use with each step, however after each model run, a manual check of the results is necessary for accuracy. The SHLINV coded shoreline serves as the base shoreline and contains information on bank height, presence of beach, presence of marsh, presence of sand spits, and riparian land cover. All other data layer information is added to this shoreline. Shoreline is delineated along the water edge. The one meter bathymetric contour is used to determine if the nearshore is suitable for marsh planting. If the 1 meter bathymetric contour is within 10 meters of the shoreline then the bathymetry field is coded as 'deep', otherwise it is coded as 'shallow'. Processing date: 2020.
2020-09-24T00:00:00
The shoreline must be visually scanned to determine if there are any man-made navigable canals. If there are, the corresponding shoreline is coded canal = 'Canal'. Sand spits are noted in the shoreline inventory. If a sand spit is present, then sandspit = 'Yes'.
2020-09-25T00:00:00
All linear shoreline structures (except dilapidated bulkhead and jetty) from the SHLINV are added to the base shoreline. Offshore structures (groin, breakwater, marsh toe revetment) are listed under the field "offshorest". All other structures are listed under "Structure".
2020-09-29T00:00:00
To add roads and permanent structures (physical structures near the shoreline that would prohibit bank grading), the shoreline is buffered based on 3 times the maximum height in the bank height category plus 20 feet. Tiger roads and rails are buffered according to road/rail type. The general rule is one lane = 12 ft and shoulder = 12 ft, rail lines = 30 ft, bike paths/walkways = 8 ft, vehicular trails = 12 ft with no shoulder. Where transportation buffers and shoreline buffers intersect, shoreline should be coded for roads. Imagery along the shoreline is inspected for any permanent structures (houses, swimming pools, sheds, etc) that are within the shoreline buffer. Shoreline is coded for permanent structures when encountered.
2020-10-01T00:00:00
A tributary designation is assigned to the shoreline. Shoreline on the main stem of rivers is coded as major tributary, while small creeks are coded as tidal creek.
2020-10-14T00:00:00
Buffered Tiger Beetle Habitat and Rare, Threatened, and Endangered (RTE) species habitat layers are used to "flag" locations along the shoreline for Ecological Considerations. Federal Channels were buffered 150 feet. Shoreline intersecting the buffer or within 30 feet of the channel buffer are flagged as Highly Modified Areas.
2021-02-17T00:00:00
The most recent 5 years of SAV data was combined to create an SAV "habitat" layer. Only SAV polygons with density greater than zero were coded as "sav". The polygons were dissolved on the "sav" field to create a general sav habitat layer. The shoreline is coded for SAV presence if SAV is within 30 ft of the shoreline.
2021-05-28T00:00:00
The shoreline is given one last check for missing coding, errors, etc. Arcs less than or equal to 1m are dissolved into the larger adjacent arc. Topology is check for dangles and overlaps, and corrections made. Maryland Shoreline Management Model model is run and the shoreline is coded with treatment recommendations. The SMM model queries a variety of spatial data and presents the preferred approach for erosion control. General preferred shoreline best management practices are recommended for all stretches of shoreline. Land use, bank height, marsh presence, fetch, beach presence, SAV, nearshore water depth, and existing structures feed into the resulting recommendations.
2021-06-25T00:00:00
AllMD_NoMarsh_LS_Final_Dec_05_2025
Maryland Living Shoreline Suitability Model attributes
Processor
Feature Class
0
OBJECTID
OBJECTID
OID
4
0
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Shape
Feature geometry.
ESRI
Coordinates defining the features.
Shape
Geometry
0
0
0
Shape_Length
Shape_Length
Double
8
0
0
Length of feature in internal units.
Esri
Positive real numbers that are automatically generated.
MSSMClsF
MSSM_Classification_Final
String
600
0
0
Maryland Shoreline Suitability final recommendations.
Maryland Shoreline Stabilization Mapper (MSSM) - Recommended Shoreline Practices Glossary, 2022
Living Shoreline
Installation of an approach that uses plants and sand, rock, oyster shell, or other natural materials to protect shoreline and to create, maintain, and enhance habitat may be appropriate where a structural shoreline stabilization measure is not present or is non-functional.
Maryland Shoreline Stabilization Mapper (MSSM) - Recommended Shoreline Practices Glossary, 2022
Undetermined
In order to make an appropriate shore erosion control measure determination the property owner should coordinate a pre-application site visit with an MDE Project Manager assigned to the territory and complete a Living Shoreline Waiver request form.
Maryland Shoreline Stabilization Mapper (MSSM) - Recommended Shoreline Practices Glossary, 2022
Structural Shoreline Stabilization Measure
A predetermined decision by MDE that a person is not required to construct a living shoreline but can construct an erosion control measure that uses devices to armor and stabilize an area landward of the measure from further erosion. The measure may include the use of a bulkhead, revetment, groin, breakwater, jetty, sand, beach nourishment, and any other similar structure.
Maryland Shoreline Stabilization Mapper (MSSM) - Recommended Shoreline Practices Glossary, 2022
File Geodatabase Feature Class
dataset
EPSG
6.11(3.0.1)
0
Simple
FALSE
0
TRUE
FALSE
20251205