20230518 11401600 1.0 FALSE Maryland_Year3b_sstru_utm18_dissolve 002 0.853 381919.015800 408801.911400 4347986.220800 4397588.500000 1 Projected GCS_North_American_1983 Linear Unit: Meter (1.000000) <ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/3.1.0'><WKT>PROJCS[&quot;NAD_1983_UTM_Zone_18N&quot;,GEOGCS[&quot;GCS_North_American_1983&quot;,DATUM[&quot;D_North_American_1983&quot;,SPHEROID[&quot;GRS_1980&quot;,6378137.0,298.257222101]],PRIMEM[&quot;Greenwich&quot;,0.0],UNIT[&quot;Degree&quot;,0.0174532925199433]],PROJECTION[&quot;Transverse_Mercator&quot;],PARAMETER[&quot;False_Easting&quot;,500000.0],PARAMETER[&quot;False_Northing&quot;,0.0],PARAMETER[&quot;Central_Meridian&quot;,-75.0],PARAMETER[&quot;Scale_Factor&quot;,0.9996],PARAMETER[&quot;Latitude_Of_Origin&quot;,0.0],UNIT[&quot;Meter&quot;,1.0],AUTHORITY[&quot;EPSG&quot;,26918]]</WKT><XOrigin>-5120900</XOrigin><YOrigin>-9998100</YOrigin><XYScale>10000</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>0.001</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>26918</WKID><LatestWKID>26918</LatestWKID></ProjectedCoordinateSystem> NAD_1983_UTM_Zone_18N 20230518 11350800 20230518 11350800 150000000 5000 FGDC Esri ArcGIS 13.1.0.41833 Harford County, Maryland: Shoreline Structures 2023 2023-09-20T00:00:00 Sharon Killeen Comprehensive Coastal Inventory, Center for Coastal Resources Management, Virginia Insitute of Marine Science (VIMS) GIS Analyst 1375 Greate Road, P.O. Box 1346 Gloucester Point Virginia 23062 sharon@vims.edu US 804-684-7534 Sharon Killeen Comprehensive Coastal Inventory, Center for Coastal Resources Management, Virginia Insitute of Marine Science (VIMS) GIS Analyst Sharon Killeen 1 -76.377699 -76.057310 39.723303 39.273187 To inventory Maryland's tidal shoreline conditions. <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN><SPAN>Shoreline Situation Reports (SSR) were first generated by VIMS in the 1970s to report the condition and status of the shore lands. The SSR series were published in hardcopy on a county by county basis for each of the Tidewater Virginia localities. The reports were intended to assist planners, managers, and regulators in decisions pertaining to management of coastal areas and natural resources therein. The techniques developed for Virginia's shoreline are used to create similar reports for the Maryland shoreline. Data collected describes conditions in the immediate riparian zone, the bank, and along the shore.</SPAN></SPAN></P><P><SPAN /></P></DIV></DIV></DIV> Shoreline Condition Shoreline Structures Riparian Shoreline Inventory <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN><SPAN>These data should not be used for jurisdictional permit determinations beyond providing general shoreline condition or status information. These data have not been surveyed to property boundaries.</SPAN></SPAN></P><P><SPAN><SPAN>The Comprehensive Coastal Inventory Program (CCI) at VIMS performs a service by distributing data generated by either CCI or public agencies which offer data without restriction or charge. CCI assumes no responsibility for data accuracy or precision, metadata completeness or correctness for digital information. CCI 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></SPAN></P><P><SPAN /></P></DIV></DIV></DIV> Susquehanna River, Swan Creek, Spesutie Narrows, Bush River, Otter Point Creek, Chesapeake Bay, Romney Creek, Gunpowder River farming, boundaries, elevation, imageryBaseMapsEarthCover, location, structure File Geodatabase Feature Class 0.853 dataset EPSG 6.11(3.0.1) 0 Simple FALSE 0 TRUE FALSE Maryland_Year3b_sstru_utm18_dissolve Feature Class 0 OBJECTID OBJECTID OID 4 0 0 Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Shape Shape Geometry 0 0 0 Feature geometry. Esri Coordinates defining the features. Structure Structure String 254 0 0 Erosion control conditions at the shoreline: breakwater, bulkhead, dilapidated bulkhead, debris, groinfield, jetty, marina >50 slips, marina <50 slips, marsh toe revetment, riprap, unconventional, and wharf. VIMS Shoreline & Tidal Marsh Inventory Glossary, Center for Coastal Resources Management Bulkhead Bulkheads, traditionally, are treated wood or steel “walls” constructed to offer protection from wave attack. More recently, plastics are being used in construction. Bulkheads are vertical structures built slightly seaward of the problem area and backfilled with suitable fill material. They function like a retaining wall, as they are designed to retain upland soil and prevent erosion of the bank from impinging waves. VIMS Shoreline & Tidal Marsh Inventory Glossary, Center for Coastal Resources Management Dilapidated Bulkhead bulkhead which has failed due to deterioration from age or storm damage is called a dilapidated bulkhead. In many cases the structure may not be able to perform erosion control functions any longer. VIMS Shoreline & Tidal Marsh Inventory Glossary, Center for Coastal Resources Management Breakwaters Breakwaters are structures that sit offshore and generally occur in a parallel series along the shore. Some breakwaters are attached to the land, referred to as headland breakwaters. Their purpose is to attenuate and deflect incoming wave energy, protecting the fastland behind and between the structures. VIMS Shoreline & Tidal Marsh Inventory Glossary, Center for Coastal Resources Management Debris Debris represents nonconforming materials and rubble dumped along the shoreline in a haphazard manner. Debris can include tires, bricks, broken concrete rubble, and railroad ties. The inventory maps Unconventional instead of Debris when the material is deliberately placed for shoreline protection in a manner similar to riprap, bulkhead, and other shoreline protection structures. VIMS Shoreline & Tidal Marsh Inventory Glossary, Center for Coastal Resources Management Groinfield Groins are low profile structures that sit perpendicular to the shore. They can be constructed of rock, timber, or concrete. They are frequently set in a series known as a groinfield, which may extend along a stretch of shoreline for some distance. Unless only a single groin can be detected, this inventory does not delineate individual groins in a groinfield. The groinfield is mapped as one linear feature parallel to the shoreline running along the length of the groin series. When effective, groins will trap sediment moving alongshore. VIMS Shoreline & Tidal Marsh Inventory Glossary, Center for Coastal Resources Management Jetty jetty is a structure, generally constructed of stone, which is perpendicular to the shoreline and generally located at the entrance of tidal creeks, tributaries, and marina boat basins. The function of a jetty is to prevent sediment transported alongshore from accumulating in the inlet. VIMS Shoreline & Tidal Marsh Inventory Glossary, Center for Coastal Resources Management Marinas: < 50 slips and > 50 slips Marinas are denoted as line features in this survey. The infrastructure associated with the marina (e.g. bulkheading, docks, wharfs, etc) are not digitized individually; however, if a boat ramp is present, it will be surveyed separately and coded as a private ramp. Marinas are generally commercial operations; however, smaller scale community docks offering slips and launches for residences are becoming more popular. To distinguish these facilities from commercial marinas, the user could check the riparian land use delineation. If “residential”, the marina is most likely a community facility. The survey estimates the number of slips within the marina and classifies marinas as those with less than 50 slips and those with more than 50 slips VIMS Shoreline & Tidal Marsh Inventory Glossary, Center for Coastal Resources Management Marsh Toe Revetment aka Marsh sill) – A low revetment placed offshore from an existing marsh or new planted marsh is classified as marsh toe revetment. The structure may include tidal openings to allow for the easy exchange of free swimming organisms during tidal cycles. Marsh toe revetments are mapped as offshore linear features running along the length of the structure. Marsh toe revetments are distinguished from breakwaters by the linear placement and presence of a tidal marsh instead of a sand beach landward from the structure. The classification can include best professional judgment. VIMS Shoreline & Tidal Marsh Inventory Glossary, Center for Coastal Resources Management Riprap aka Revetments) - Sloped structures constructed with large, heavy stone or other materials placed against the upland bank for erosion protection. Riprap is mapped as a linear feature along the shoreline. Riprap is also used next to failing bulkheads (bulkhead toe revetments). The inventory maps only riprap when this type of structure is co-located with bulkheads. A similar structure is used to protect the edge of eroding marshes, which is mapped as marsh toe revetment, not riprap. VIMS Shoreline & Tidal Marsh Inventory Glossary, Center for Coastal Resources Management Unconventional Unconventional features represent segments along the shore where alternative material has been deliberately placed for shoreline protection. Unconventional features may include unique materials placed in a similar manner as riprap or bulkheads, such as engineered pre-cast concrete products. It may also include unique placement or arrangement of conventional materials like riprap that does not fit other structure definitions. The inventory maps "debris" instead of "unconventional" when the material is haphazardly scattered and not providing any shoreline protection. VIMS Shoreline & Tidal Marsh Inventory Glossary, Center for Coastal Resources Management Wharf A wharf is typically described a shore parallel structure where boats are tied. In this inventory, wharfs are generally associated with large industrial, public or commercial facilities. VIMS Shoreline & Tidal Marsh Inventory Glossary, Center for Coastal Resources Management mrnaStruc mrnaStruc String 50 0 0 A structure that is associated with the marina that is present, usually bulkhead or riprap. VIMS Shoreline & Tidal Marsh Inventory Glossary, Center for Coastal Resources Management County County String 255 0 0 Imagery Imagery String 255 0 0 Shape_Length Shape_Length Double 8 0 0 Length of feature in internal units. 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Box 1346 Gloucester Point Virginia 23062 sharon@vims.edu US 804-684-7534 Sharon Killeen The shoreline used for this county is the NOAA Continually Updated Shoreline Product (CUSP) and if necessary modified to reflect the land-water interface (shoreline) based on the latest imagery available. 2023-01-10T00:00:00 All processing steps for the shoreline inventory were generated using ArcGIS - ArcMap v10.6.1 while viewing conditions observed on MD_SixInchImagery and Google Earth Pro (checking dates from 1994 to 2018). For the land use/bank cover shapefile, arcs were split and coded for selected land use, bank height, tree fringe, and presence or absence of spit , marsh and beach. For the access structure shapefile, points were placed where structures (dock, dilapidated dock, boathouse, public ramp, community dock and private ramp) are located on the shoreline. For the shoreline structure shapefile, arcs were coded for bulkhead, dilapidated bulkhead, riprap, unconventional, debris, wharf, breakwater, groinfield, jetty, marsh toe revetment, and marina >50 slips and <50 slips. 2023-02-28T00:00:00 QAQC was done by a different Scientist 2023-03-31T00:00:00