Divergence
(
type: esriFieldTypeSmallInteger, alias: DivergenceCode
, Coded Values:
[2: Feature is a minor path of a divergence]
, [0: Feature is not part of a divergence]
, [1: Feature is the main path of a divergence]
)
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This dataset was derived through a lidar digital elevation model flow accumulation threshold in combination with surface water extracted from the Chesapeake Bay Program high resolution land cover dataset. </SPAN></P></DIV></DIV></DIV>
Service Item Id: 7c66fcb5fa4444aa884b7872eb4dad70
Copyright Text: Chesapeake Conservancy's Conservation Innovation Center, Chesapeake Bay Program high resolution land cover.
Description: <DIV STYLE="text-align:Left;font-size:12pt"><P><SPAN>NHDFlowline is the fundamental flow network consisting predominantly of stream/river and artificial path vector features. It represents the spatial geometry, carries the attributes, and contains linear referencing measures for locating features or “events” on the network. Additional NHDFlowline features are canal/ditch, pipeline, connector, underground conduit, and coastline.</SPAN></P></DIV>
Name: MDE Wetlands Of Special State Concern (Linear)
Display Field: Label
Type: Feature Layer
Geometry Type: esriGeometryPolyline
Description: <DIV STYLE="text-align:Left;font-size:12pt"><P><SPAN>and regulating these wetlands. In general - the US Fish and Wildlife Service's National Wetlands Inventory wetlands provide the basis for identifying these special wetlands. Additional information - determined from field inspections - is used to identify and classify these areas. Last Updated: Feature Service Layer Link: http://geodata.md.gov/imap/rest/services/Hydrology/MD_Wetlands/MapServer/3</SPAN></P></DIV>
Description: <DIV STYLE="text-align:Left;font-size:12pt"><P><SPAN>The Department of Natural Resources makes no warranty, expressed or implied, as to the use or appropriateness of Spatial Data, and there are no warranties of merchantability or fitness for a particular purpose or use. The information contained in Spatial Data is from publicly available sources, but no representation is made as to the accuracy or completeness of Spatial Data. The Department of Natural Resources shall not be subject to liability for human error, error due to software conversion, defect, or failure of machines, or any material used in the connection with the machines, including tapes, disks, CD-ROMs or DVD-ROMs and energy. The Department of Natural Resources shall not be liable for any lost profits, consequential damages, or claims against the Department of Natural Resources by third parties. The liability of the Department of Natural Resources for damage regardless of the form of the action shall not exceed any distribution fees that may have been paid in obtaining Spatial Data.</SPAN></P></DIV>
Description: <DIV STYLE="text-align:Left;font-size:12pt"><P><SPAN>This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the conterminous United States. These data delineate the areal extent of wetlands and surface waters as defined by Cowardin et al. (1979). Certain wetland habitats are excluded from the National mapping program because of the limitations of aerial imagery as the primary data source used to detect wetlands. These habitats include seagrasses or submerged aquatic vegetation that are found in the intertidal and subtidal zones of estuaries and near shore coastal waters. Some deepwater reef communities (coral or tuberficid worm reefs) have also been excluded from the inventory. These habitats, because of their depth, go undetected by aerial imagery. By policy, the Service also excludes certain types of "farmed wetlands" as may be defined by the Food Security Act or that do not coincide with the Cowardin et al. definition. Contact the Service's Regional Wetland Coordinator for additional information on what types of farmed wetlands are included on wetland maps.</SPAN></P></DIV>
Name: MD DNR Coastal Resilience Priority Shoreline Areas
Display Field: Sheltered_
Type: Feature Layer
Geometry Type: esriGeometryPoint
Description: <DIV STYLE="text-align:Left;font-size:12pt"><P><SPAN>The difference between the two scenarios indicates the potential magnitude of coastal hazard reduction by habitats at each location. Model results were integrated with MD DNR’s Community Flood Risk Areas (March, 2016) in order to highlight areas where hazard reduction by habitats is most likely to benefit at-risk coastal communities.</SPAN></P></DIV>
Name: MD DNR Coastal Resilience Community Flood Risk Areas
Display Field: FloodType
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: <DIV STYLE="text-align:Left;font-size:12pt"><P><SPAN>Coastal storm and flood events may increase the likelihood of danger or damage to life and property as a consequence of inundation and shoreline erosion. These hazards are caused by storms and exacerbated by sea level rise. The Community Flood Risk Areas represent residential areas at risk to coastal flooding where populations may be less equipped to prepare for, respond to, or recover from a coastal hazard event. Risk Areas are ranked from 1 to 5 to indicate relative risk, with 1 indicating very low risk and 5 indicating very high risk. Risk rankings incorporate population density, social parameters (i.e. age, income, language proficiency), and probability of exposure to a flood hazard event in any one given year. 2013 US Census Bureau American Community Survey, 2010 Maryland Department of Planning land use land cover, and effective FEMA floodplain data as of December 2015 were used to identify and rank risk areas. </SPAN></P></DIV>
Description: <DIV STYLE="text-align:Left;font-size:12pt"><P><SPAN>The watershed boundaries in this file were developed in a joint state and federal effort to create a consistent watershed file for use by all government agencies with an interest in Maryland's watersheds. The U.S. Natural Resources Conservation Service (NRCS) redefined the third order watersheds creating the HUA14 file. This file contains all of the HUA14 watersheds and some added watersheds to maintain water quality sampling sites. It was also used to create the Maryland Sub-Watershed file.</SPAN></P></DIV>
Description: <DIV STYLE="text-align:Left;font-size:12pt"><P><SPAN>The Department of Natural Resources shall not be subject to liability for human error, error due to software conversion, defect, or failure of machines, or any material used in the connection with the machines, including tapes, disks, CD-ROM's or DVD-ROM's and energy. The Department of Natural Resources shall not be liable for any lost profits, consequential damages, or claims against the Department of Natural Resources by third parties. The liability of the Department of Natural Resources for damage regardless of the form of the action shall not exceed any distribution fees that may have been paid in obtaining Spatial Data.This is a MD iMAP hosted service layer. Find more information at https://imap.maryland.gov.Map Service Link: https://geodata.md.gov/imap/rest/services/Weather/MD_SeaLevelRiseVulnerability/MapServer/0</SPAN></P><P><SPAN>Purpose: Maryland Sea Level Rise Vulnerability - 0 to 2 Foot Inundation</SPAN></P></DIV>
Description: <DIV STYLE="text-align:Left;font-size:12pt"><P><SPAN>Hydrography map showing National Hydrography Data Set Plus High Resolution (NHD Plus HR) , Watershed Boundary Data Set (WBD) catchments and Digital Elevation Model (DEM) data.</SPAN></P></DIV>
Description: The Watershed Boundary Dataset (WBD) is a comprehensive aggregated collection of hydrologic unit data consistent with the national criteria for delineation and resolution. It defines the areal extent of surface water drainage to a point except in coastal or lake front areas where there could be multiple outlets as stated by the "Federal Standards and Procedures for the National Watershed Boundary Dataset (WBD)" “Standard” (http://pubs.usgs.gov/tm/11/a3/). Watershed boundaries are determined solely upon science-based hydrologic principles, not favoring any administrative boundaries or special projects, nor particular program or agency. This dataset represents the hydrologic unit boundaries to the 12-digit (6th level) for the entire United States. Some areas may also include additional subdivisions representing the 14- and 16-digit hydrologic unit (HU). At a minimum, the HUs are delineated at 1:24,000-scale in the conterminous United States, 1:25,000-scale in Hawaii, Pacific basin and the Caribbean, and 1:63,360-scale in Alaska, meeting the National Map Accuracy Standards (NMAS). Higher resolution boundaries are being developed where partners and data exist and will be incorporated back into the WBD. WBD data are delivered as a dataset of polygons and corresponding lines that define the boundary of the polygon. WBD polygon attributes include hydrologic unit codes (HUC), size (in the form of acres and square kilometers), name, downstream hydrologic unit code, type of watershed, non-contributing areas, and flow modifications. The HUC describes where the unit is in the country and the level of the unit. WBD line attributes contain the highest level of hydrologic unit for each boundary, line source information and flow modifications.
Service Item Id: 7c66fcb5fa4444aa884b7872eb4dad70
Copyright Text: Funding for the Watershed Boundary Dataset (WBD) was provided by the USDA-NRCS, USGS and EPA along with other federal, state and local agenciesies. Representatives from many agencies contributed a substantial amount of time and salary towards quality review and updating of the dataset in order to meet the WBD Standards. Acknowledgment of the originating agencies would be appreciated in products derived from these data. See dataset specific metadata for further information