20170808 13511900 FALSE 20220502 12222400 20220502 12222400 ChesapeakeBayCriticalArea 002 457230.551900 494825.295500 103722.729300 141856.870400 1 Projected GCS_North_American_1983 NAD_1983_StatePlane_Maryland_FIPS_1900_Feet <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/2.9.0'><WKT>PROJCS[&quot;NAD_1983_StatePlane_Maryland_FIPS_1900_Feet&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;Lambert_Conformal_Conic&quot;],PARAMETER[&quot;False_Easting&quot;,1312333.333333333],PARAMETER[&quot;False_Northing&quot;,0.0],PARAMETER[&quot;Central_Meridian&quot;,-77.0],PARAMETER[&quot;Standard_Parallel_1&quot;,38.3],PARAMETER[&quot;Standard_Parallel_2&quot;,39.45],PARAMETER[&quot;Latitude_Of_Origin&quot;,37.66666666666666],UNIT[&quot;Foot_US&quot;,0.3048006096012192],AUTHORITY[&quot;EPSG&quot;,2248]]</WKT><XOrigin>-120561100</XOrigin><YOrigin>-95444400</YOrigin><XYScale>3048.0060960121918</XYScale><ZOrigin>0</ZOrigin><ZScale>1</ZScale><MOrigin>0</MOrigin><MScale>1</MScale><XYTolerance>0.0032808333333333331</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>102685</WKID><LatestWKID>2248</LatestWKID></ProjectedCoordinateSystem> Linear Unit: Foot_US (0.304801) 1.0 FGDC CSDGM Metadata FGDC 150000000 5000 20220502 ArcGIS Metadata 1.0 Personal GeoDatabase Feature Class 10.1 Enterprise Geodatabase Feature Class 10.1 ChesapeakeBayCriticalArea vector digital data vector digital data Eastern Shore Regional GIS Cooperative 1101 Camden Avenue Salisbury MD 21801 esrgc@salisbury.edu 410.677.5390 410.677.6727 M-F; 8am - 4pm 2013-03-28T00:00:00 Summary Draft Maps See access and use constraints information. Esri ArcGIS 12.9.2.32739 -76.392306 -75.896012 38.577412 38.946921 1 -76.343000 -75.906204 38.942741 38.595980 The purpose of the Chesapeake Bay Critical Area (CBCA) Remapping effort is to provide an updated critical area map for the Counties of Maryland. The County will have two years, from the date of official transmission of final data layers, to adopt the proposed CBCA and its designations as the official map for the County. <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Buffer line is a result of converting the 1000-foot buffer of tidal shoreline and landward edge of tidal wetlands, to a line so that it can be used as the landward boundary of the Critical Area. See process steps for details.</SPAN></P></DIV></DIV></DIV> The remapping of Maryland's Critical Area has been a collaboration of the Critical Area Commission, Maryland Department of Natural Resources, Talbot County, and ESRGC at Salisbury University. Eastern Shore Regional GIS Cooperative 1101 Camden Avenue Salisbury MD 21801 esrgc@salisbury.edu 410.677.5390 410.677.6727 M-F; 8am - 4pm Eastern Shore Regional GIS Cooperative 0 ChesapeakeBayCriticalArea Feature Class 0 OBJECTID_1 OBJECTID_1 OID 4 10 0 Internal feature number. Esri Sequential unique whole numbers that are automatically generated. OBJECTID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. OBJECTID Integer 4 10 0 FID_buffer FID_buffer Integer 4 10 0 Shape Feature geometry. ESRI Coordinates defining the features. Shape Geometry 8 0 0 Shape_Leng Shape_Leng Double 8 38 8 TYPE TYPE String 10 0 0 Shape.STLength() Shape.STLength() Double 0 0 0 dataset EPSG 5.3(9.0.0) Simple FALSE 0 TRUE FALSE Lauren McDermott Eastern Shore Regional GIS Cooperative 1101 Camden Avenue Salisbury MD 21801 esrgc@salisbury.edu 410.677.5390 410.677.6727 M-F; 8am - 4pm Digitized the shoreline using 2007 true-color orthophotography primarily. When necessary 2007 CIR or 2006 true-color orthophotography was used. • Barren land limit determined by: Presence of vegetation, Edge of wettest land, Presence of boats/docks (take midway point between water’s edge and fast land) • Mud flats left on water edge of shoreline, with the assumption that they would be inundated by water at high tide • Presence of bulkhead supersedes revetment (rip-rap, rock piling, etc) as shoreline boundary and the top of the bulkhead will be digitized as shoreline • Bulk heads and revetments are fast land and serve as water edge of shoreline. In the case of revetments, the toe of the revetment will be digitized as shoreline unless a high water mark is present, in which case the high water mark will be captured as shoreline. • Perpendicular groins and jetties will not be included in shoreline unless they are mapped as shoreline on 72 wetland maps or are greater than 10 meters wide. • Tombolas will not be included in shoreline • Parallel groins will not be included in shoreline • Exclude bridges or roads that intersect shoreline Other consideration made while capturing the shoreline were: • Digitizing scale took place at a minimum of 1:1200 (max of 1:600 used for inspection) • 1972 Wetlands maps provided the extent to which rivers were digitized • Docks greater than 20 meters wide were treated as shoreline • Digitizing of polygon water features ends where the feature visually becomes a line • Consideration was given to tree canopy and shadows • When faced with doubt about whether or not shoreline runs under a structure, error on the side the landward edge and intersect at 90 degrees (flag area for review by local representatives) Digitized wetlands using 2007 color infrared ortho-imagery and collateral datasets including LiDAR, contours, 1972 wetland maps, and DNR wetland maps. • Digitizing scale took place at a minimum of 1:1200 (max of 1:600 used for inspection) • Landward edge of tidal wetlands (persistent emergent wetlands/scrub-shrub) interpreted from 2007 CIR image and checked against topographic data • Wetland determinations were checked against rectified 1972 Wetland Maps • Areas of disturbed wetlands will be reviewed and permits will be checks • Collateral datasets were used to aid in interpretation including soils, DRGs, LiDAR, and true-color imagery • Review point created for instances where there is a significant difference between ESRGC interpretation and 72 wetland maps (decision to be made by CAC) and to indicate where wetlands have been delineated and were not on 72 maps • Flag areas of wetland that appear to be mowed/disturbed • Wetlands that occur in front of a revetment will be digitized as wetland • Lines smoothed by .01 • Capture uplands within wetlands (in wetland feature class) that are mapped in 72 wetland maps AND are greater than 1 acre. Merge shoreline and wetlands and buffer by 1000 feet. Convert polygon to a line and remove waterward line.