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The floodplain boundary line feature class represents the 100-yr floodplain boundary delineation based on the floodplain studies done by private consultants and DoE. |
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The floodplain boundary line feature class represents the 100-yr floodplain boundary delineation based on the floodplain studies done by private consultants and DoE. |
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– The floodplain boundary line feature class represents the 100-yr floodplain boundary delineation based on the floodplain studies done by private consultants and DoE. Boundary lines were digitized based on a hierarchy decision tree in relation to the source documentation and mapping available.1. The 100-yr floodplain boundary was digitized from floodplain mapping that was georeferenced using grid coordinate marks and / or aerial imagery features. If the 100-yr floodplain boundary was clearly delineated on the mapping, the GIS feature was digitized from the georeferenced mapping.2. If the 100-yr floodplain boundary was not clearly indicated on the mapping and floodplain cross sections existed indicating the elevation of the 100-yr floodplain boundary, the floodplain boundary was digitized using 2-foot elevation contours and extrapolated between cross sections, crossing at the intersection of the cross section and associated contour.3. If the 100-yr floodplain boundary and cross sections were not identified from the mapping, the floodplain boundary for these segments was digitized between the known upstream and downstream floodplain boundary elevation from adjacent floodplain studiesThe following is a list of table fields and descriptions for the floodplain boundary line feature class:FPS_NUM – floodplain study number issued by CountyPLANDATE – date of the approved floodplain study COMMENTS – additional comments related to the floodplain study or digitization process |
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The information used in this application was derived from private studies done by private Consultants. Although Prince George’s County strives to provide the best data available, Prince George’s County does not accept any responsibility for any errors, omissions, or positional accuracy, and therefore, there are no warranties which accompany this information. Although information from different sources have been used in the creation of the flood map layers, in no way shall this information be taken as final, complete, or constitute an accurate floodplain delineation. Users of the information displayed in GIS are strongly cautioned to verify all information before making any decisions. This map depicts approved County 100-year floodplain studied areas, as sources for flood hazard areas. These digital floodplain boundaries are produced in conjunction with the hardcopy and generally match the hardcopy map. It is the responsibility of the applicant to field survey the area to accurately determine floodplain on the property. Prince George’s County cannot be held liable or responsible for any adverse impact or decisions pertaining to the property based on the information provided on this website. The information shown should not be used as the sole source of floodplain information. It does not identify all areas subject to flooding, particularly from local drainage sources of small size. Any streams with a drainage area of 50 acres or more require delineation of 100-year floodplain. If this map does not reflect floodplain for such streams, the user must prepare a new floodplain delineation. |
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PGCOITGIS02.DBO.CONSULTANT_FLOODPLAIN |
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["DPIE","Floodplain Boundary Lines","Floodplain_FPS"] |
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en-US |
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