Jason J. Rohweder
20250611
Lake Superior seamless topobathymetric digital elevation model
raster digital data
https://doi.org/10.5066/P1DA6L6U
Modifications were made to an existing Lake Superior topobathy data set to interpolate areas of missing near shore elevation data. Areas with missing elevation data were not interpolated where there was low confidence in the underlying depth. This included rivers, canals, harbors, lakes, reservoirs, etc. Areas important for targeting Phragmites australis management often lie within these aquatic/terrestrial transition zones.
The original topobathy 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 NOAA Lake Level Viewer. It depicts potential lake level rise and fall and its associated impacts on the nation's coastal areas. The base elevation data were the best available lidar and US Army Corps of Engineer dredge survey data known to exist at the time of DEM creation that met project specifications. The base elevation includes data for Alcona, Alpena, Arenac, Bay, Cheboygan, Chippewa, Huron, Iosco, Mackinac, Presque Isle, Sanilac, St. Clair, and Tuscola counties in Michigan.
These data will be used within a web mapping application designed to identify areas suitable for Phragmites australis management within the Great Lakes watershed using various methods. Detailed elevation data is the key component for several aspects of management.
Source data and their associated metadata are available at the following URLs:
1. 2007, USACE NCMP Topobathy Lidar: Lake Superior (Apostle Islands) and Lake Ontario (NY, WI)
Metadata: https://coast.noaa.gov/data/Documents/Metadata/Lidar/no_harvest/usace2007_gl_m114_metadata.xml
Data Download: https://coast.noaa.gov/htdata/lidar1_z/geoid12a/data/114
2. 2008, USACE NCMP Topobathy Lidar: Lake Superior (Wisconsin and Michigan)
Metadata: https://coast.noaa.gov/data/Documents/Metadata/Lidar/no_harvest/mi2008_usace_lakesuperior_m2517_metadata.xml
Data Download: https://coast.noaa.gov/htdata/lidar1_z/geoid12a/data/2517
3. 2009, USACE NCMP Topobathy Lidar: Lake Superior (Duluth, MN)
Metadata: https://coast.noaa.gov/data/Documents/Metadata/Lidar/no_harvest/usace2009_gl_mn_m556_metadata.xml
Data Download: https://coast.noaa.gov/htdata/lidar1_z/geoid12a/data/556
4. 2009, USACE NCMP Topobathy Lidar: Isle Royale (MI)
Metadata: https://coast.noaa.gov/data/Documents/Metadata/Lidar/no_harvest/usace2009_gl_isle_royale_m1391_metadata.xml
Data Download: https://coast.noaa.gov/htdata/lidar1_z/geoid12a/data/1391
5. 2009, USACE NCMP Topobathy Lidar: Apostle Islands, Wisconsin
Metadata: https://coast.noaa.gov/data/Documents/Metadata/Lidar/no_harvest/usace2009_gl_apostle_islands_m1392_metadata.xml
Data Download: https://coast.noaa.gov/htdata/lidar1_z/geoid12a/data/1392/
6. 2009, USACE Lidar: Duluth, MN and Superior, WI (Including shoreline in Douglas, Bayfield, Ashland, and Iron Counties)
Metadata: https://coast.noaa.gov/data/Documents/Metadata/Lidar/harvest/wi2009_bayfieldcounty_lakesuperior_m2507_metadata.xml
Data Download: https://coast.noaa.gov/htdata/lidar1_z/geoid12a/data/2507/
7. 2010, EPA Great Lakes Restoration Initiative (GLRI) Bathymetric Lidar: Lake Superior (MI, MN, WI)
Metadata: https://coast.noaa.gov/data/Documents/Metadata/Lidar/harvest/glri2010_superior_m586_metadata.xml
Data Download: https://coast.noaa.gov/htdata/lidar1_z/geoid12a/data/586
8. 2011, USACE NCMP Topobathy Lidar: MI/NY Great Lakes
Metadata: https://coast.noaa.gov/data/Documents/Metadata/Lidar/no_harvest/usace2011_GreatLakes_m1407_metadata.xml
Data Download: https://coast.noaa.gov/htdata/lidar1_z/geoid12a/data/1407/
9. 2011, Northeast Minnesota / Arrowhead Lidar
Metadata: http://www.mngeo.state.mn.us/chouse/elevation/lidar.html
Data Download: http://www.mngeo.state.mn.us/chouse/elevation/lidar.html
10. 2013, USACE NCMP Topobathy Lidar: Stamp Sands, Lake Superior (MI)
Metadata: https://coast.noaa.gov/data/Documents/Metadata/Lidar/no_harvest/mi2013_usace_stamp_sands_superior_m3670_metadata.xml
Data Download: https://coast.noaa.gov/htdata/lidar1_z/geoid12a/data/3670/
11. 2013, USACE NCMP Topobathy Lidar: St. Marys River (MI)
Metadata: https://coast.noaa.gov/data/Documents/Metadata/Lidar/no_harvest/mi2013_ncmp_stmarys_m4748_metadata.xml
Data Download: https://coast.noaa.gov/htdata/lidar1_z/geoid12b/data/4748/
12. 2013, USACE NCMP Topobathy Lidar: Lake Superior (MI)
Metadata: https://coast.noaa.gov/data/Documents/Metadata/Lidar/no_harvest/mi2013_usace_ncmp_lake_superior_m4913_metadata.xml
Data Download: https://coast.noaa.gov/htdata/lidar1_z/geoid12b/data/4913/
13. 2015, FEMA Ashland County
Metadata: ftp://ftp.ssec.wisc.edu/pub/wisconsinview/lidar/Ashland/
Data Download: ftp://ftp.ssec.wisc.edu/pub/wisconsinview/lidar/Ashland/
14. 2016, USACE NCMP Topobathy Lidar: Stamp Sands (MI)
Metadata: https://coast.noaa.gov/data/Documents/Metadata/Lidar/no_harvest/mi2016_usace_ncmp_stamp_sands_m5187_metadata.xml
Data Download: https://coast.noaa.gov/htdata/lidar2_z/geoid12b/data/5187/
15. USACE Harbor Dredge Surveys (9 surveys)
Metadata: http://navigation.usace.army.mil/Survey/Hydro
Data Download: http://navigation.usace.army.mil/Survey/Hydro
16. 2013, National Park Service, Pictured Rocks National Lakeshore Multibeam Sonar
Metadata: National Park Service, Great Lakes Network, Ulf Galfvert, ulf_gafvert@nps.gov, (715) 682-0631 x222
Data Download: National Park Service, Great Lakes Network, Ulf Galfvert, ulf_gafvert@nps.gov, (715) 682-0631 x222
17. 2014, National Park Service, Pictured Rocks National Lakeshore Multibeam Sonar
Metadata: National Park Service, Great Lakes Network, Ulf Galfvert, ulf_gafvert@nps.gov, (715) 682-0631 x222
Data Download: National Park Service, Great Lakes Network, Ulf Galfvert, ulf_gafvert@nps
20070101
20161231
ground condition
None planned
Lake Superior
-92.2192
-84.3592
48.3061
46.0636
ISO 19115 Topic Category
elevation
None
Bathymetry/Topography
elevation
Digital Elevation Model
DEM
lidar
sonar
inundation
flooding
topography
water levels
USGS Metadata Identifier
USGS:6690427ad34e341cbf155772
None
Great Lakes
Lake Superior
US
Michigan
Alger County
Baraga County
Chippewa County
Gogebic County
Houghton County
Keweenaw County
Luce County
Marquette County
Ontonagon County
Minnesota
Cook County
Lake County
St. Louis County
Wisconsin
Ashland County
Bayfield County
Douglas County
Iron County
None. Please see 'Distribution Info' for details.
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. Users are advised to read the dataset's metadata thoroughly to understand appropriate use and data limitations.
Jason Rohweder
U.S. Geological Survey, MIDCONTINENT REGION
Biologist
mailing address
2630 Fanta Reed Road
La Crosse
WI
54603
US
608-781-6228
608-783-6066
jrohweder@usgs.gov
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.
This dataset was produced on a computer running Windows 10, with the software packages ArcGIS Pro (ESRI, 2022), and Python v3.9.16 (Python Software Foundation, 2021).
Software References:
ESRI, 2022. ArcGIS Pro 3.1.2. Redlands, CA: Environmental Systems Research Institute.
Python Software Foundation, 2021. Python Language Reference, version 3.9.16. Available at http://www.python.org
The attributes contained in this dataset were computed from multiple existing datasets. Therefore, their accuracy is dependent on the accuracy of those underlying datasets. The user is referred to the metadata and reports describing the input datasets for a discussion of their accuracy.
Data covers the tile scheme provided for the project area. Elevation data checked for anomalous elevation values outside expected range.
A visual qualitative check was performed to ensure data completeness. All available lidar and sonar 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 and sonar coverage was incomplete.
The DEM is derived from the source lidar and sonar 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 and sonar 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.
Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM)
20170701
NOAA Office for Coastal Management Coastal Digital Elevation Model: Lake Superior
raster digital data
https://coast.noaa.gov/llv
https://coast.noaa.gov/digitalcoast/tools/llv
https://coast.noaa.gov
Digital and/or Hardcopy
20060101
20151231
ground condition
dem
Source digital elevation raster used.
Digital elevation models (dem) were downloaded from the Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM). A mask was then created identifying areas within the lake's nearshore area with (1) and without (0) elevation data.
dem
20240201
con01
Jason Rohweder
U.S. Geological Survey, MIDCONTINENT REGION
Biologist
mailing address
2630 Fanta Reed Road
La Crosse
WI
54603
US
608-781-6228
608-783-6066
jrohweder@usgs.gov
Using the ArcGIS function "Shrink", identified a 1-cell buffer around all topobathymetric data. This 1-cell buffer was used to interpolate an elevation surface for missing near-shore areas.
con01
20240201
shrink02
Jason Rohweder
U.S. Geological Survey, MIDCONTINENT REGION
Biologist
mailing address
2630 Fanta Reed Road
La Crosse
WI
54603
US
608-781-6228
608-783-6066
jrohweder@usgs.gov
Using the ArcGIS function "Con" identified the topobathymetric elevation underlying each 1-cell buffer location.
shrink02
20240201
clip03
Jason Rohweder
U.S. Geological Survey, MIDCONTINENT REGION
Biologist
mailing address
2630 Fanta Reed Road
La Crosse
WI
54603
US
608-781-6228
608-783-6066
jrohweder@usgs.gov
Identified areas to interpolate missing elevation data. Areas were prioritized at the interface of the terrestrial and bathymetric lidar data collection where neither input acquisition was able to collect data. This was accomplished using on-screen digitization and aerial photography basemaps as a guide. Areas with missing elevation data were not interpolated where there was low confidence in the underlying depth. This included rivers, harbors, lakes, reservoirs, etc.
20240201
ext04
Jason Rohweder
U.S. Geological Survey, MIDCONTINENT REGION
Biologist
mailing address
2630 Fanta Reed Road
La Crosse
WI
54603
US
608-781-6228
608-783-6066
jrohweder@usgs.gov
Used identified areas to interpolate missing elevation data (ext04) to clip the topobathymetric elevation underlying each 1-cell buffer location (clip03). Result are digital elevation model cells within 1-meter of targeted land/water interface lacking elevation data.
ext04
clip03
20240201
ext05
Jason Rohweder
U.S. Geological Survey, MIDCONTINENT REGION
Biologist
mailing address
2630 Fanta Reed Road
La Crosse
WI
54603
US
608-781-6228
608-783-6066
jrohweder@usgs.gov
Converted the clipped 1-cell buffer raster data set to a point shapefile using the "RastertoPoint" function in ArcGIS and then performed an inverse-distance weighted interpolation to generate an elevation surface over the missing areas identified. Parameters used for the IDW ArcGIS function included a cell size of 3 meters, a power of 4, and a fixed 500-meter circular search radius.
ext05
20240201
pt06
idw07
Jason Rohweder
U.S. Geological Survey, MIDCONTINENT REGION
Biologist
mailing address
2630 Fanta Reed Road
La Crosse
WI
54603
US
608-781-6228
608-783-6066
jrohweder@usgs.gov
Clipped the interpolated elevation surface (idw07) using the raster identifying missing elevation areas to fill with data (ext04).
idw07
ext04
20240201
idw08
Jason Rohweder
U.S. Geological Survey, MIDCONTINENT REGION
Biologist
mailing address
2630 Fanta Reed Road
La Crosse
WI
54603
US
608-781-6228
608-783-6066
jrohweder@usgs.gov
Converted the floating-point meter raster to a 16-bit integer raster to save disk space. Values were multiplied by 100 to convert units to centimeters.
idw08
20240201
Jason Rohweder
U.S. Geological Survey, MIDCONTINENT REGION
Biologist
mailing address
2630 Fanta Reed Road
La Crosse
WI
54603
US
608-781-6228
608-783-6066
jrohweder@usgs.gov
Raster
Grid Cell
70531
203031
1
NAD 1983 Great Lakes and St Lawrence Albers
42.122774
49.01518
-83.248627
45.568977
1000000.0
1000000.0
row and column
3.0
3.0
meters
North_American_Datum_1983
GRS 1980
6378137.0
298.257222101004
North American Vertical Datum of 1988
0.001
meters
Explicit elevation coordinate included with horizontal coordinates
superior_topobathy.tif
Raster geospatial data file.
Producer Defined
OID
Internal object identifier.
Producer Defined
Sequential unique whole numbers that are automatically generated.
Value
Elevation in centimeters.
Producer Defined
11175
46276
cm
1
Count
Number of raster cells with this value.
Producer Defined
1.0
181534.0
U.S. Geological Survey
GS ScienceBase
mailing address
Denver Federal Center, Building 810, Mail Stop 302
Denver
CO
80225
United States
1-888-275-8747
sciencebase@usgs.gov
Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Digital Data
https://doi.org/10.5066/P1DA6L6U
None
20250611
Jason Rohweder
U.S. Geological Survey, MIDCONTINENT REGION
Biologist
mailing address
2630 Fanta Reed Road
La Crosse
WI
54603
US
608-781-6228
608-783-6066
jrohweder@usgs.gov
FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata
FGDC-STD-001.1-1999