NOAA Office for Coastal Management (OCM) Lake Level Data: Mapping Confidence
Office for Coastal Management
Data Set
(DS)
| ID: 48102
| Published / External
Created: 2017-11-14
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Last Modified: 2023-05-30
Project (PRJ) | ID: 37230
ID: 48102
Data Set (DS)
* Discovery• First Pass
» Metadata Rubric
Item Identification
* » Title | NOAA Office for Coastal Management (OCM) Lake Level Data: Mapping Confidence |
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Short Name | NOAA_OCM_LLV_confidence_metadata |
* Status | Completed |
Creation Date | |
Revision Date | |
• Publication Date | 2017 |
* » Abstract |
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 |
* Purpose |
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. |
Notes |
10959 |
Other Citation Details | |
• Supplemental Information |
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 |
DOI (Digital Object Identifier) | |
DOI Registration Authority | |
DOI Issue Date |
Keywords
Theme Keywords
Thesaurus | Keyword |
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Global Change Master Directory (GCMD) Science Keywords | EARTH SCIENCE > LAND SURFACE > GEOMORPHIC LANDFORMS/PROCESSES > COASTAL PROCESSES > FLOODING |
Global Change Master Directory (GCMD) Science Keywords | EARTH SCIENCE > LAND SURFACE > GEOMORPHIC LANDFORMS/PROCESSES > COASTAL PROCESSES > SEA LEVEL CHANGES |
Global Change Master Directory (GCMD) Science Keywords | EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION > DIGITAL ELEVATION/TERRAIN MODEL (DEM) |
ISO 19115 Topic Category | climatologyMeteorologyAtmosphere |
ISO 19115 Topic Category | elevation |
ISO 19115 Topic Category | environment |
ISO 19115 Topic Category | oceans |
None | Bathymetry/Topography |
None | confidence |
None | elevation |
None | flooding |
None | inundation |
None | Shoreline |
None | uncertainty |
None | water level decrease |
None | water level increase |
None | water level rise |
Temporal Keywords
Thesaurus | Keyword |
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* Spatial Keywords
Thesaurus | Keyword |
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Global Change Master Directory (GCMD) Location Keywords | CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > GREAT LAKES |
None | Great Lakes |
None | Illinois |
None | Indiana |
None | Lake Erie |
None | Lake Huron |
None | Lake Michigan |
None | Lake Ontario |
None | Lake Superior |
None | Michigan |
None | Minnesota |
None | New York |
None | Ohio |
None | Pennsylvania |
None | United States |
None | Wisconsin |
Stratum Keywords
Thesaurus | Keyword |
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Instrument Keywords
Thesaurus | Keyword |
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Platform Keywords
Thesaurus | Keyword |
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Physical Location
• » Organization | Office for Coastal Management |
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• » City | Charleston |
• » State/Province | SC |
• Country | |
• » Location Description |
Data Set Information
* Data Set Scope Code | Data Set |
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• Data Set Type | |
• Maintenance Frequency | None Planned |
Maintenance Note | |
» Data Presentation Form | |
• Entity Attribute Overview | |
Entity Attribute Detail Citation | |
Entity Attribute Detail URL | |
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. |
Data Set Credit | 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. |
Support Roles
* » Support Role | Data Steward |
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* » Date Effective From | 2017 |
Date Effective To | |
Organization | NOAA Office for Coastal Management (NOAA/OCM) |
Address |
2234 South Hobson Ave Charleston, SC 29405-2413 |
Email Address | coastal.info@noaa.gov |
Phone | (843) 740-1202 |
Fax | |
Mobile | |
URL | https://coast.noaa.gov |
Business Hours | |
Contact Instructions |
* » Support Role | Distributor |
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* » Date Effective From | 2017 |
Date Effective To | |
Organization | NOAA Office for Coastal Management (NOAA/OCM) |
Address |
2234 South Hobson Ave Charleston, SC 29405-2413 |
Email Address | coastal.info@noaa.gov |
Phone | (843) 740-1202 |
Fax | |
Mobile | |
URL | https://coast.noaa.gov |
Business Hours | |
Contact Instructions |
* » Support Role | Metadata Contact |
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* » Date Effective From | 2017 |
Date Effective To | |
Organization | NOAA Office for Coastal Management (NOAA/OCM) |
Address |
2234 South Hobson Ave Charleston, SC 29405-2413 |
Email Address | coastal.info@noaa.gov |
Phone | (843) 740-1202 |
Fax | |
Mobile | |
URL | https://coast.noaa.gov |
Business Hours | |
Contact Instructions |
* » Support Role | Point of Contact |
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* » Date Effective From | 2017 |
Date Effective To | |
Organization | NOAA Office for Coastal Management (NOAA/OCM) |
Address |
2234 South Hobson Ave Charleston, SC 29405-2413 |
Email Address | coastal.info@noaa.gov |
Phone | (843) 740-1202 |
Fax | |
Mobile | |
URL | https://coast.noaa.gov |
Business Hours | |
Contact Instructions |
* » Support Role | |
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* » Date Effective From | |
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* » Contact | |
* Contact Instructions |
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* Contact Instructions |
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* » Date Effective From | |
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* » Contact | |
* Contact Instructions |
Extents
Currentness Reference | Publication Date |
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Extent Group 1
Extent Description |
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Extent Group 1 / Geographic Area 1
* » W° Bound | -91.02 |
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* » E° Bound | -75.74 |
* » N° Bound | 49.61 |
* » S° Bound | 40.75 |
* » Description |
Extent Group 1 / Vertical Extent
EPSG Code | |
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Vertical Minimum | |
Vertical Maximum |
Extent Group 1 / Time Frame 1
* » Time Frame Type | Range |
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* » Start | 2017-05 |
End | 2017-06 |
Alternate Start As Of Info | |
Alternate End As Of Info | |
Description |
Spatial Information
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Equivalent Scale Denominator | |
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Reference Systems
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Access Information
Data License | |
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Data License URL | |
Data License Statement | |
* » Security Class | Unclassified |
* Security Classification System | |
Security Handling Description | |
• Data Access Policy | |
» Data Access Procedure |
This data may be downloaded at: https://coast.noaa.gov/llv; |
• » Data Access Constraints |
None |
• Data 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. |
Metadata Access Constraints | |
Metadata Use Constraints |
Distribution Information
Start Date | |
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End Date | |
» Download URL | |
Distributor | |
File Name | |
Description | |
File Date/Time | |
File Type | |
FGDC Content Type | |
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Application Version | |
Compression | |
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» Download URL | |
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URLs
URL | https://coast.noaa.gov/llv |
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Name | |
URL Type | Online Resource |
File Resource Format | |
Description |
URL | https://coast.noaa.gov/digitalcoast/tools/llv |
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Name | |
URL Type | Online Resource |
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Activity Log
Activity Time | 2017-07-05 |
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Activity Type | |
Responsible Party | |
Description |
Date that the source FGDC record was last modified. |
Activity Time | 2017-11-14 |
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Activity Type | |
Responsible Party | |
Description |
Converted from FGDC Content Standards for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details. |
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Technical Environment
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Data Quality
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Comparability | |
Completeness Measure | |
Precision | |
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Field Precision | |
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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. |
» Quality Control Procedures Employed |
Data Management
» Have Resources for Management of these Data Been Identified? | |
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» Approximate Percentage of Budget for these Data Devoted to Data Management | |
» Do these Data Comply with the Data Access Directive? | |
» Is Access to the Data Limited Based on an Approved Waiver? | |
» If Distributor (Data Hosting Service) is Needed, Please Indicate | |
» Approximate Delay Between Data Collection and Dissemination | |
» If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed |
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» Actual or Planned Long-Term Data Archive Location | |
» If World Data Center or Other, Specify | |
» If To Be Determined, Unable to Archive, or No Archiving Intended, Explain |
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» Approximate Delay Between Data Collection and Archiving | |
» How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive? |
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Lineage
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Sources
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Process Steps
Process Step Number | 1 |
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» Description |
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. |
Process Date/Time | 2017-01-01 00:00:00 |
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Acquisition Information
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Child Items
Rubric scores updated every 15m
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Catalog Details
Catalog Item ID | 48102 |
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Metadata Record Created By | Anne Ball |
Metadata Record Created | 2017-11-14 14:15+0000 |
Metadata Record Last Modified By | SysAdmin InPortAdmin |
» Metadata Record Last Modified | 2023-05-30 18:09+0000 |
Metadata Record Published | 2017-11-16 |
Owner Org | OCM |
Metadata Publication Status | Published Externally |
Do Not Publish? | N |
Metadata Workflow State | Published / External |
Metadata Last Review Date | 2017-11-16 |
Metadata Review Frequency | 1 Year |
Metadata Next Review Date | 2018-11-16 |
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