Flooding behind levees is only depicted if breaks in elevation data occur or if the levee elevations are overtopped by the water surface. The maps are produced using detailed elevation maps with local and regional tidal variability. Zoom to an area of interest. Interactive global map showing areas threatened by sea level rise and coastal flooding. There are five scenarios of relative sea level rise (RSL) shown in this tab (intermediate Low, intermediate, intermediate high, high, extreme). In Southeast Florida, our sea level is also affected by another factor – the Gulf Stream. These new scenarios were developed by the Sea Level Rise and Coastal Flood Hazard Scenarios and Tools Interagency Task Force, jointly convened by the U.S. The map allows users to choose between the leading sea level rise models and incorporate the most accurate elevation data available. Technical This map viewer illustrates the scale of potential coastal flooding after varying amounts of sea level rise. Washington – Eastern Puget Sound updated with new elevation data for Padilla Bay NERR and Skagit River Delta. Blue areas denote a high confidence of inundation, orange areas denote a high degree of uncertainty, and unshaded areas denote a high confidence that these areas will be dry given the chosen water level. All locations – Photo simulations now have images for 7-10ft. Global Change Research Program (USGCRP) and the National Ocean Council as input to the USGCRP Sustained Assessment process and 4th National Climate Assessment. Click an inundated location on the map for water depth. Data and maps provided can be used at several scales to help estimate impacts and prioritize actions for different scenarios. Between 1900 and 2016, the sea level rose by 16–21 cm (6.3–8.3 in) on average. Low-lying areas, displayed in green, are hydrologically "unconnected" areas that may also flood. New DEM available. Oahu, Hawaii - Remapped with new elevation data. New DEM available. In this application 80% is considered a high degree of confidence such that, for example, the blue areas denote locations that may be correctly mapped as 'inundated' more than 8 out of 10 times. It is important not to focus on the exact extent of inundation, but rather to examine the level of confidence that the extent of inundation is accurate (see mapping confidence tab). The mapping may not accurately capture detailed hydrologic/hydraulic features such as canals, ditches, and stormwater infrastructure. In a sense, today’s flood will become tomorrow’s high tide, as sea level rise will cause flooding to occur more frequently and last for longer durations of time. Puerto Rico – Remapped with new elevation data. The average rate of sea level rise over the period 1993-2018, when satellite measurements have been available, has been around 3.3 mm/year. New Hampshire – Remapped with new elevation data. A large fraction of the Earth’s fresh water is frozen: It’s stored in glaciers all around the world, and in both the Greenland and Antarctic ice sheets.When this ice melts or calves off, the water flows into the oceans and sea levels rise.If all glaciers and ice sheets melted, global sea level would rise by more than 195 feet (60 meters). A partial melting of this ice sheet would cause a 1-meter (3-foot) rise. Use the vertical slider to simulate water level rise, the resulting inundation footprint, and relative depth. New DEM available. View central estimates. Click on the image above to check for threats from sea level rise and storm surge. Climate Central. The data and maps in this tool are provided “as is” without warranty to their performance, merchantable state, or fitness for any particular purpose. Users can now zoom in one more level under Sea Level Rise, Scenarios and High Tide Flooding. 2014; Kopp et al. This tool should be used strictly as a planning reference tool and not for navigation, permitting, or other legal purposes. Here, we model the contribution of polar ice sheets to local sea level rise. Compare inundation levels to local relative sea level rise scenarios. Opportunity to download mapping files by state. View sea level rise and potential coastal flooding impact areas and relative depth. New DEMs available. New DEM available. But if you want to see it happening in real-time, look no further than high-tide floods. Use the slider bar (on most tabs) to examine the impacts of different sea level rise scenarios. View the potential impact of sea level rise and coastal flooding on a vulnerable population. Water levels are relative to Mean Higher High Water (MHHW; excludes wind driven tides). Sea Level Rise simulations are not available above the 6FT level. 3. Sea Level Rise and Storm Surge Projections for the National Park Service. Technical information specific to this dataset. Florida – Remapped with updated VDatum tidal surface. View potential changes in marsh and other land cover types based on inundation levels. Zoom to your area of interest and click on the closest Scenario Location icon in the map. Adjust the one foot increment map layers (circle) to view the potential inundation impacts for each scenario. Global vulnerability to sea level rise … Now vs. 25 feet of sea level rise Credit: Nickolay Lamm.Data: Climate Central. … A new interactive map built by Climate Central shows which parts of the UK will be enveloped by rising tides in 2050. New DEM available. Thermal expansion: When water heats up, it expands.About half of the sea-level rise over the past 25 years is attributable to warmer oceans simply occupying more space. Data from the Sea Level Rise Viewer were used to create an interactive map that shows how areas vulnerable to flooding today were often marshlands in 1863. Users can simulate inundation associated with one to six feet of sea level rise at various scales along the contiguous United States coast, except for the Great Lakes. The data and maps in this tool illustrate the scale of potential flooding, not the exact location, and do not account for erosion, subsidence, or future construction. Sea level rise is an increase in the level of the world’s oceans due to the effects of global warming.Burning fossil fuels is one of the causes of global warming because it releases carbon dioxide and other heat-trapping gasses into the atmosphere.The oceans then absorb the majority of this heat. Dark red indicates tracts having a high vulnerability, and the lighter reds indicate decreasing vulnerability. As new elevation data become available, or as stakeholders provide additional levee information, the NOAA Office for Coastal Management will periodically update the inundation and levee data. For a detailed description of the confidence levels and their computation, see the methods document. There is not 100% confidence in the elevation data and/or mapping process. These RSL scenarios begin in year 2000 and take into account global mean sea level rise (GMSL), regional changes in ocean circulation, changes in Earth’s gravity field due to ice melt redistribution, and local vertical land motion. Areas with a high degree of uncertainty represent locations that may be mapped correctly (either as inundated or dry) less than 8 out of 10 times. Sea Level Rise and Coastal Flooding Impacts, Decision Maker's Toolbox - Viewing Sea Level Rise. Levees are displayed as yellow lines, and enclosed leveed areas are displayed as a white stippled pattern. https://niwa.co.nz/natural-hazards/hazards/sea-levels-and-sea-level-rise New DEM available. In some cases, however, breaks in elevation occur along leveed areas because of flood control features being removed from elevation data, limitations of the horizontal and vertical resolution of the elevation data, the occurrence of levee drainage features, and so forth. Click on icons in the map to view sea level rise simulations at specific locations. United States Department of Commerce | National Oceanic and Atmospheric Administration | National Ocean Service | Website owner: Office for Coastal Management | Last Modified: Contact Us | Privacy Policy | Link Disclaimer | USA.gov. Visualize the impacts of sea level rise and prioritize actions for different scenarios. scenarios, RSL rise is likely to be higher than the global average along all U.S. coastlines outside Alaska. The viewer is a screening-level tool that uses best-available, nationally consistent data sets and analyses. Furthermore, this scenario would be associated with low levels of risk even if it did occur. At some flood levels, alternate pathways around—not through—levees, walls, dams, and flood gates may exist that allow water to flow into areas protected at lower levels. You can learn more about them by reading this report, exploring the USACE Sea Level Rise Calculator, and within the Local Scenarios Tab of this viewer. New DEM available. Image: Sea Level Rise tool from EarthTime. Click on a NOAA tide station icon in the map to see historical inundation events in flood days per year. The data, maps, and information provided should be used only as a screening-level tool for management decisions. This map viewer illustrates the scale of potential coastal flooding after varying amounts of sea level rise. Adjust the half foot increment map layers (circle) to view the potential inundation impacts for each year increment.