DescriptionThe map shows the location where oil spills and brine spills have been documented by the US Department of Transportation Pipeline and Hazardous Materials Safety Administration (PHMSA) and the State of North Dakota's Department of Health. LayersOil Spills- Pipeline SpillsThe types and relative volumes of oil spills are shown on the map using different colors of markers and sizes of the markers.Types include: Equipment Failures, Storage Failures, Vehicle Accidents, Wellhead SpillsSource: PHMSA.dot.govUpdated July 2019Uncontained Oil Spills by VolumeSpills that were not contained by the boundaries of oilwell pads were mapped, and the volumes of the spills are shown by the size of the marker.Source: https://deq.nd.gov/Spills/Data from Jan. 1, 2014-July 19, 2019North Dakota Brine Spills by VolumeBrine is the saline wastewater resulting from oil and gas exploration and production.  It is enriched with a variety of toxic elements and compounds.Source: https://deq.nd.gov/Spills/Data from Jan. 1, 2014-July 19, 2019ND PipelinesThe layer shows the locations of major pipelines.Source: PHMSA.dot.govUpdated July 2019ND Oil FieldsThe layer shows the areal coverage of oil fields in North DakotaSource: https://www.dmr.nd.gov/OaGIMS/viewer.htmUpdated July 2019North Dakota Flood Plains - Mandatory InsuranceTo proactively assess and address flooding risks to the public, the U.S. Federal Emergency Management Agency (FEMA) has developed the National Flood Insurance Program (NFIP). This program was created by Congress in 1968 to help provide a means for property owners holding federally backed mortgages to financially protect themselves in the event of a flood. Flood insurance is mandatory if you live in a high-risk area and have a mortgage from a federally regulated or insured lender.Source: https://www.fema.gov/media-library/assets/documents/12886Updated July 2019North Dakota Flood Plains - 500 YearThe "500-year flood" corresponds to an AEP of 0.2-percent, which means a flood of that size or greater has a 0.2-percent chance (or 1 in 500 chance) of occurring in a given year.Source: https://www.fema.gov/media-library/assets/documents/12886Updated July 2019North Dakota Flood Plain - FloodwayA "Regulatory Floodway" means the channel of a river or other watercourse and the adjacent land areas that must be reserved in order to discharge the base flood without cumulatively increasing the water surface elevation more than a designated height. Communities must regulate development in these floodways to ensure that there are no increases in upstream flood elevations. For streams and other watercourses where FEMA has provided Base Flood Elevations (BFEs), but no floodway has been designated, the community must review floodplain development on a case-by-case basis to ensure that increases in water surface elevations do not occur, or identify the need to adopt a floodway if adequate information is available.Source: https://www.fema.gov/media-library/assets/documents/12886Updated July 2019