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NOAA Office for Coastal Management (OCM) Lake Level Data: -6 Feet to +6 Feet Water Level Change

Metadata Updated: March 15, 2024

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 consist of 13 water extent polygons and 13 water depth rasters (3 m resolution, depth values in meters) that show the potential water level when 
    the water level is decreased from 0 feet to -6 feet (resulting in potential land exposure) and when water level is increased from 0 to +6 feet (resulting 
    in potential flooding). These data are based on the each lake's long term average water level over the period of record (1913-2008). More information on 
    the long term average water level can be found at https://www.glerl.noaa.gov//pubs/fulltext/2013/20130021.pdf, 
    https://www.glerl.noaa.gov//pubs/fulltext/2013/20130022.pdf, and the Great Lakes Water Level Dashboard (https://www.glerl.noaa.gov/data/dashboard/GLWLD.html).

    The process used to produce the data can be described as a bathtub approach. The process uses two source data sets to derive the final water extent polygons 
    and water depth rasters for each iteration of water level decrease or increase: the Digital Elevation Model (DEM) of the area and each lake's long term 
    average water level over the period of record (1918-2017) at the time of data set creation. Data can be downloaded at https://coast.noaa.gov/llv.

    The model used to produce these data does not account for erosion, subsidence, or any future construction. Water levels are as they would appear during calm 
    conditions (excludes wind-driven effects). 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.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

Dates

Metadata Date February 29, 2024
Metadata Created Date November 12, 2020
Metadata Updated Date March 15, 2024
Reference Date(s) 2017 (publication)
Frequency Of Update notPlanned

Metadata Source

Harvested from NOS OCM

Additional Metadata

Resource Type Dataset
Metadata Date February 29, 2024
Metadata Created Date November 12, 2020
Metadata Updated Date March 15, 2024
Reference Date(s) 2017 (publication)
Responsible Party NOAA Office for Coastal Management (Point of Contact, Custodian)
Contact Email
Guid gov.noaa.nmfs.inport:48103
Access Constraints Cite As: Office for Coastal Management, [Date of Access]: NOAA Office for Coastal Management (OCM) Lake Level Data: -6 Feet to +6 Feet Water Level Change [Data Date Range], https://www.fisheries.noaa.gov/inport/item/48103., Access Constraints: None, 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 (1918-2003) (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 dataset should be used strictly as a planning reference and not for navigation, permitting, or other legal purposes., 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.
Bbox East Long -75.74
Bbox North Lat 49.61
Bbox South Lat 40.75
Bbox West Long -91.02
Coupled Resource
Frequency Of Update notPlanned
Harvest Object Id 40288dca-f279-4bfd-96e6-0fa9ee97b765
Harvest Source Id c0121fd9-df15-4168-ac04-42f6e36a794d
Harvest Source Title NOS OCM
Licence 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.
Lineage
Metadata Language eng
Metadata Type geospatial
Old Spatial {"type": "Polygon", "coordinates": [[[-91.02, 40.75], [-75.74, 40.75], [-75.74, 49.61], [-91.02, 49.61], [-91.02, 40.75]]]}
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True

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