60070
NOAA Office for Coastal Management Coastal Inundation Digital Elevation Model: Texas Central
TX Central DEM FY20 Update
Data Set
Published / External
37230
Inundation
Project
Completed
2020-07
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 called the Sea Level Rise and Coastal Flooding Impacts Viewer. It depicts potential sea level rise and its associated impacts on the nation's coastal areas. The purpose of the mapping viewer is to provide coastal managers and scientists with a preliminary look at sea level rise and coastal flooding impacts. The viewer is a screening-level tool that uses nationally consistent data sets and analyses. Data and maps provided can be used at several scales to help gauge trends and prioritize actions for different scenarios. The Sea Level Rise and Coastal Flooding Impacts Viewer may be accessed at: https://coast.noaa.gov/slr.
This metadata record describes the Texas Central digital elevation model (DEM), which is a part of a series of DEMs produced for the National Oceanic and Atmospheric Administration Office for Coastal Management's Sea Level Rise and Coastal Flooding Impacts Viewer described above. This DEM includes the best available lidar known to exist at the time of DEM creation that met project specifications. This DEM includes data for Calhoun, Jackson, Matagorda, and Victoria Counties.
The DEM was produced from the following lidar data sets:
1. 2018 TNRIS Lidar: Upper Coastal Lidar
2. 2018 Matagorda Bay TX Lidar
3. 2018 Texas - South Texas Lidar
The DEM is referenced vertically to the North American Vertical Datum of 1988 (NAVD88, Geoid12B) with vertical units of meters and horizontally to the North American Datum of 1983 (NAD83). The resolution of the DEM is approximately 3 meters.
The NOAA Office for Coastal Management has developed high-resolution digital elevation models (DEMs) for use in the Office's Sea Level Rise and Coastal Flooding Impacts internet mapping application. These DEMs serve as source datasets used to derive data to visualize the impacts of inundation resulting from sea level rise along the coastal United States and its territories.
10911
Source data and their associated metadata are available at the following URLs:
1. 2018 TNRIS Lidar: Upper Coastal Lidar
Download: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8898 or https://data.tnris.org/collection/b5bd2b96-8ba5-4dc6-ba88-d88133eb6643
Metadata: https://www.fisheries.noaa.gov/inport/item/58236
2. 2018 Matagorda Bay TX Lidar
Download: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9029/details/9029
Metadata: https://www.fisheries.noaa.gov/inport/item/58921
3. 2018 Texas - South Texas Lidar
Download: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8841/details/8841 or https://data.tnris.org/collection/6131ecdd-aa26-433e-9a24-97ac1afda7de
Metadata: https://www.fisheries.noaa.gov/inport/item/57941
Theme
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > LAND SURFACE > GEOMORPHIC LANDFORMS/PROCESSES > COASTAL PROCESSES > FLOODING
Theme
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > LAND SURFACE > GEOMORPHIC LANDFORMS/PROCESSES > COASTAL PROCESSES > SEA LEVEL CHANGES
Theme
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION > DIGITAL ELEVATION/TERRAIN MODEL (DEM)
Theme
ISO 19115 Topic Category
elevation
Spatial
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > TEXAS
Theme
Bathymetry/Topography
Theme
DEM
Theme
Digital Elevation Model
Theme
elevation
Theme
flooding
Theme
inundation
Theme
lidar
Theme
sea level rise
Theme
topography
Spatial
Calhoun County
Spatial
Jackson County
Spatial
Matagorda County
Spatial
Victoria County
Office for Coastal Management
Charleston
SC
Data Set
None Planned
Image (digital)
Any conclusions drawn from the analysis of this information are not the responsibility of the NOAA Office for Coastal Management or its partners.
Acknowledgment of the NOAA Office for Coastal Management as a 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.
Distributor
2020-07
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Metadata Contact
2020-07
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Point of Contact
2020-07
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Ground Condition
-97.30694
-95.49556
29.26478
28.02192
Discrete
2018
Yes
3
Area
No
Row
46118
Column
67214
Vertical
1
Geographic 2D
EPSG:4269
NAD83
North American Datum 1983
GRS 1980
6378137
298.257222101
1
Geodetic Latitude
Lat
degree
north
1
Geodetic Latitude
Lat
degree
north
2
Geodetic Longitude
Lon
degree
east
2
Geodetic Longitude
Lon
degree
east
Latitude and Longitude
.000026999999999999999
.000026999999999999999
Decimal Degrees
Explicit Coordinate
.001
Meters
Unclassified
None
The dataset 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 dataset is assumed by the user. This dataset should be used strictly as a planning reference and not for navigation, permitting, or other legal purposes.
https://coast.noaa.gov
Online Resource
https://coast.noaa.gov/digitalcoast/tools/slr
Online Resource
https://coast.noaa.gov/slr
Online Resource
https://coast.noaa.gov/slrdata
Online Resource
The DEM is derived from the source lidar data. Horizontal accuracy testing is not performed on the DEM. Lidar source data assumed to meet 1 meter horizontal accuracy.
The DEM is derived from the source lidar data. Vertical accuracy is not tested on the DEM. Project specifications require all source lidar data used in constructing the DEM to meet FEMA Specifications for Flood Hazard Mapping.
A visual qualitative check was performed to ensure data completeness. All available lidar data known at the time of DEM creation that meets project specifications has been used to develop the DEM. Known data gaps may exist where lidar coverage was incomplete.
Data covers the tile scheme provided for the project area. Elevation data checked for anomalous elevation values outside expected range.
1
The source elevation datasets listed above were identified, downloaded, edited, and finalized.
2020-03-01T00:00:00
2
Source elevation data and their associated hydro-breaklines, where available, were downloaded. Data were then reviewed and edited to meet the project's requirements. The major requirements were delineating streams 10m or greater in width, removing bridges over streams greater than 10m wide, flattening inland water bodies, and converting data referenced to an older geoid to the current geoid, Geoid 12B. NOAA's VDatum datum conversion tool was used to convert geoids. Ocean-connected water areas were removed from data prior to final mosaicking. Data were then mosaicked together based on date, with the most recent data taking priority. Ocean-connected water areas were given a value of -99 to standardize this area's value across sources, to flatten water for mapping, and to make it easy for users to remove ocean-connected water if desired.
2020-03-01T00:00:00
gov.noaa.nmfs.inport:60070
William Brooks
2020-06-18T14:28:09
SysAdmin InPortAdmin
2023-05-30T18:09:44
2020-06-29
Office for Coastal Management
OCM
1002
Public
No
2020-06-29
1 Year
2021-06-29