gov.noaa.nmfs.inport:48102 eng UTF8 dataset Office for Coastal Management resourceProvider NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information pointOfContact 2024-02-29T00:00:00 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) NOAA Office for Coastal Management (OCM) Lake Level Data: Mapping Confidence NOAA_OCM_LLV_confidence_metadata 2017 publication NOAA/NMFS/EDM 48102 https://www.fisheries.noaa.gov/inport/item/48102 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information https://coast.noaa.gov/digitalcoast/tools/llv WWW:LINK-1.0-http--link Citation URL Online Resource download https://coast.noaa.gov/llv WWW:LINK-1.0-http--link Citation URL Online Resource download These data were created as part of the National Oceanic and Atmospheric Administration Office for Coastal Management's efforts to create an online mapping viewer depicting potential water level increase and decrease in the coastal areas of the Great Lakes. The lakes included are: Erie, Huron, Michigan, Ontario, St. Clair, and Superior. The purpose of the mapping viewer is to provide coastal managers and scientists with a preliminary look at lake level change and potential coastal impacts. The viewer is a screening-level tool that uses nationally consistent data sets and analyses to help users examine multiple scenarios and prioritize actions. The Lake Level Viewer may be accessed at: https://coast.noaa.gov/llv These data depict the mapping confidence of the associated lake water level data for the water level amounts of -6 feet through +6 feet. The mapping process is designed to give the most accurate picture of water extent possible, but inherent data errors introduce some uncertainty in the exact water extents. The presentation of data confidence only represents the known error in the elevation data and not uncertainty associated with the natural evolution of the coastal landforms (e.g., erosion or bluff failure) or future climate change impacts on lake levels. To access the associated data to be used with this data: NOAA Office for Coastal Management Lake Level Data: -6 Feet to +6 Feet Water Level Change data may be downloaded at: https://coast.noaa.gov/llv The NOAA Office for Coastal Management has tentatively adopted an 80 percent rank (as either inundated or not inundated) as the zone of relative confidence. The use of 80 percent has no special significance but is a commonly used rule of thumb measure to describe economic systems (Epstein and Axtell, 1996). The method used to determine the confidence data only includes the uncertainty in the lidar derived elevation data (root mean square error, or RMSE). This confidence data shows that the water level depicted in the -6 feet to +6 feet water level change data is not really a hard line, but rather a zone with greater and lesser chances of being wet or dry. Areas that have a high level of confidence that they will be wet, means that there is an 80 percent or greater likelihood that these areas will be covered with water. Conversely, there is a 20 percent or less likelihood that the area will be dry. Areas mapped as wet (inundation) with a high confidence (or low uncertainty) are coded as 2. Areas that have a high level of confidence that they will be dry, means that there is an 80 percent or greater likelihood that these areas will be dry. Conversely, there is a 20 percent or less likelihood that the area will be wet. Areas mapped as dry (no inundation) with a high confidence (or low uncertainty) are coded as 0. Areas that have a low level of confidence, means that there is a 21 - 79 percent likelihood of wet or dry conditions. Note that 60 percent of the time, the land-water interface will be within this zone. Areas mapped as dry or wet with a low confidence (or high uncertainty) are coded as 1. As with all remotely sensed data, all features should be verified with a site visit. The data are provided as is, without warranty to their performance, merchantable state, or fitness for any particular purpose. The entire risk associated with the results and performance of these data is assumed by the user. This data should be used strictly as a planning reference and not for navigation, permitting, or other legal purposes. For a detailed description of the confidence level and its computation, please see the Mapping Inundation Uncertainty document available at: http://www.jcronline.org/doi/abs/10.2112/JCOASTRES-D-13-00118.1 The purpose of these data is to show the level of confidence in the water level data based on the uncertainty in the source lidar elevation data. Acknowledgment of the NOAA Office for Coastal Management (OCM) as the data source would be appreciated in products developed from these data, and such acknowledgment as is standard for citation and legal practices for data source is expected. completed NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information pointOfContact NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information custodian notPlanned EARTH SCIENCE > LAND SURFACE > GEOMORPHIC LANDFORMS/PROCESSES > COASTAL PROCESSES > FLOODING EARTH SCIENCE > LAND SURFACE > GEOMORPHIC LANDFORMS/PROCESSES > COASTAL PROCESSES > SEA LEVEL CHANGES EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION > DIGITAL ELEVATION/TERRAIN MODEL (DEM) theme Global Change Master Directory (GCMD) Science Keywords 17.0 CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > GREAT LAKES place Global Change Master Directory (GCMD) Location Keywords 20.8 Bathymetry/Topography Shoreline confidence elevation flooding inundation uncertainty water level decrease water level increase water level rise theme Great Lakes Illinois Indiana Lake Erie Lake Huron Lake Michigan Lake Ontario Lake Superior Michigan Minnesota New York Ohio Pennsylvania United States Wisconsin place DOC/NOAA/NOS/OCM > Office of Coastal Management, National Ocean Service, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2017-04-24 publication 8.5 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Inundation project InPort otherRestrictions Cite As: Office for Coastal Management, [Date of Access]: NOAA Office for Coastal Management (OCM) Lake Level Data: Mapping Confidence [Data Date Range], https://www.fisheries.noaa.gov/inport/item/48102. NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose. otherRestrictions Access Constraints: None otherRestrictions Use Constraints: These data illustrate the scale of potential water level decrease and increase, not the exact location, and do not account for erosion, subsidence, or future construction. Water level is shown as it would appear based on each lake's long term average water level over the period of record (excludes wind driven effects) with one foot increments of water level decrease or increase. These data should be used only as a screening-level tool for management decisions. As with all remotely sensed data, all features should be verified with a site visit. The data set is provided as is, without warranty to its performance, merchantable state, or fitness for any particular purpose. The entire risk associated with the results and performance of this data set is assumed by the user. This data set should be used strictly as a planning reference and not for navigation, permitting, or other legal purposes. otherRestrictions Distribution Liability: These data illustrate the scale of potential water level decrease and increase, not the exact location, and do not account for erosion, subsidence, or future construction. Water level is shown as it would appear based on each lake's long term average water level over the period of record (excludes wind driven effects) with one foot increments of water level decrease or increase. These data should be used only as a screening-level tool for management decisions. As with all remotely sensed data, all features should be verified with a site visit. The data set is provided as is, without warranty to its performance, merchantable state, or fitness for any particular purpose. The entire risk associated with the results and performance of this data set is assumed by the user. This data set should be used strictly as a planning reference and not for navigation, permitting, or other legal purposes. Any conclusions drawn from the analysis of this information are not the responsibility of the Office for Coastal Management (OCM) or its partners. unclassified NOAA Data Management Plan (DMP) NOAA/NMFS/EDM 48102 https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/ocm/dmp/pdf/48102.pdf WWW:LINK-1.0-http--link NOAA Data Management Plan (DMP) NOAA Data Management Plan for this record on InPort. information crossReference eng; US climatologyMeteorologyAtmosphere elevation environment oceans -91.02 -75.74 40.75 49.61 | Currentness: Publication Date 2017-05-01 2017-06-01 A detailed methodology for producing these data can be found via the following url: http://www.jcronline.org/doi/abs/10.2112/JCOASTRES-D-13-00118.1 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: NAD 1983 Great Lakes and St Lawrence Albers Albers_Conical_Equal_Area: Standard_Parallel: 42.122774 Standard_Parallel: 49.01518 Longitude_of_Central_Meridian: -83.248627 Latitude_of_Projection_Origin: 45.568977 False_Easting: 1000000.0 False_Northing: 1000000.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000000003398570314061545 Ordinate_Resolution: 0.000000003398570314061545 Planar_Distance_Units: meter Geodetic_Model: Horizontal_Datum_Name: D North American 1983 Ellipsoid_Name: GRS 1980 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257222101 NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information distributor https://coast.noaa.gov/digitalcoast/tools/llv WWW:LINK-1.0-http--link https://coast.noaa.gov/digitalcoast/tools/llv Online Resource download https://coast.noaa.gov/llv WWW:LINK-1.0-http--link https://coast.noaa.gov/llv Online Resource download dataset Completeness Report These data are complete. Gaps may exist, but these are due to a lack of available elevation data at the time of data set creation. Conceptual Consistency The data were reviewed for consistency and anomalies. The process to create these data is as follows: 1. NOAA OCM uses the uncertainty of each of the source elevation data sets to create depth rasters and z-score rasters for each water level (from -6 feet to +6 feet). 2. Each z-score raster is reclassified to areas of low and high confidence. Areas mapped as dry (no inundation) with a high confidence or low uncertainty are classified as 0. Areas mapped as dry or wet with a low confidence or high uncertainty are classified as 1. Areas mapped as wet (inundation) with a high confidence or low uncertainty are classified as 2. 2017-01-01T00:00:00