Jason J. Rohweder
20250611
Lake Erie seamless topobathymetric digital elevation model
raster digital data
https://doi.org/10.5066/P1DA6L6U
Modifications were made to an existing Lake Erie 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 data included data for Monroe and Wayne Counties in Michigan; Chautauqua and Erie Counties in New York; Ashtabula, Cuyahoga, Erie, Lake, Lorain, Lucas, Ottawa, Sandusky, and Wood Counties in Ohio; and Erie County in Pennsylvania.
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. 2011 - 2012 USACE NCMP Topobathy Lidar: Lake Erie (MI, NY, OH, PA)
Metadata: https://coast.noaa.gov/htdata/lidar1_z/geoid12a/data/3662/gl2012_usace_lake_erie_mi_ny_oh_pa_m3662_metadata.html
Data Download: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=3662
2. 2011 USACE NCMP Topobathy Lidar: MI/NY Great Lakes
Metadata: https://coast.noaa.gov/htdata/lidar1_z/geoid12a/data/1407/usace2011_greatlakes_metadata.html
Data Download: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=1407
3. 2008 FEMA Lidar: Erie County, NY
Metadata: https://coast.noaa.gov/htdata/lidar1_z/geoid12a/data/107/2008_NY_Erie_metadata.html
Data Download: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=107
4. 2007 USACE NCMP Topobathy Lidar: Lake Erie (Erie County, PA) and Lake Michigan (Manitou Islands) (MI, PA)
Metadata: https://coast.noaa.gov/htdata/lidar1_z/geoid12a/data/115/
Data Download: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=115
5. 2007 USACE NCMP Topobathy Lidar: Lake Erie (NY Shoreline)
Metadata: https://coast.noaa.gov/htdata/lidar1_z/geoid12a/data/523/USACE2007_GL_Erie_NY_metadata.html
Data Download: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=523
6. 2006 USACE NCMP Topobathy Lidar: Lake Erie (OH, PA), Lake Huron (MI) and Lake Michigan (Porter County, IN)
Metadata: https://coast.noaa.gov/htdata/lidar1_z/geoid12a/data/40/
Data Download: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=40
7. 2007 Pennsylvania Department of Conservation and Natural Resources (PA DCNR) Statewide Lidar
Metadata: http://www.pasda.psu.edu/uci/MetadataDisplay.aspx?entry=PASDA&file=pamap_lidar_LAS.xml&dataset=1244
Data Download: http://www.pasda.psu.edu/uci/MetadataDisplay.aspx?entry=PASDA&file=pamap_lidar_LAS.xml&dataset=1244
8. 2006 Ohio Statewide Imagery Program (OSIP) Lidar: North
Metadata: http://gis3.oit.ohio.gov/geodatadownload/osip.aspx
Data Download:http://gis3.oit.ohio.gov/geodatadownload/osip.aspx
9. 2015 USACE Detroit District; Detroit River, MI; Livingstone Channel Reach
Metadata: http://navigation.usace.army.mil/Survey/Hydro
Data Download: http://navigation.usace.army.mil/Survey/Hydro
10. 2015 USACE Buffalo District, Ashtabula Harbor, OH
Metadata: http://navigation.usace.army.mil/Survey/Hydro
Data Download: http://navigation.usace.army.mil/Survey/Hydro
11. 2015 USACE Buffalo District, Erie Harbor, PA
Metadata: http://navigation.usace.army.mil/Survey/Hydro
Data Download: http://navigation.usace.army.mil/Survey/Hydro
12. 2015 USACE Buffalo District, Fairport Harbor, OH
Metadata: http://navigation.usace.army.mil/Survey/Hydro
Data Download: http://navigation.usace.army.mil/Survey/Hydro
13. 2015 USACE Buffalo District, Rocky River, OH
Metadata: http://navigation.usace.army.mil/Survey/Hydro
Data Download: http://navigation.usace.army.mil/Survey/Hydro
14. 2013 USACE Buffalo District; Buffalo Harbor, NY; Buffalo River and Ship Canal
Metadata: http://navigation.usace.army.mil/Survey/Hydro
Data Download: http://navigation.usace.army.mil/Survey/Hydro
15. 2014 USACE Detroit District, Point Mouillee, MI
Metadata: http://navigation.usace.army.mil/Survey/Hydro
Data Download: http://navigation.usace.army.mil/Survey/Hydro
16. 2014 USACE Buffalo District, Conneaut Harbor, OH
Metadata: http://navigation.usace.army.mil/Survey/Hydro
Data Download: http://navigation.usace.army.mil/Survey/Hydro
17. 2014 USACE Buffalo District, Dunkirk Harbor, NY
Metadata: http://navigation.usace.army.mil/Survey/Hydro
Data Download: http://navigation.usace.army.mil/Survey/Hydro
18. 2014 USACE Buffalo District, Niagara River, NY
Metadata: http://navigation.usace.army.mil/Survey/Hydro
Data Download: http://navigation.usace.army.mil/Survey/Hydro
19. 2014 USACE Buffalo District, Sandusky Harbor, OH
Metadata: http://navigation.usace.army.mil/Survey/Hydro
Data Download: http://navigation.usace.army.mil/Survey/Hydro
20060101
20151231
ground condition
None planned
Lake Erie
-83.7250
-78.7330
42.9036
41.2818
ISO 19115 Topic Category
elevation
None
Bathymetry/Topography
elevation
Digital Elevation Model
DEM
lidar
sonar
inundation
flooding
topography
water levels
USGS Metadata Identifier
USGS:66903b2dd34e7f6636ec211b
None
Great Lakes
US
Lake Erie
Michigan
New York
Ohio
Pennsylvania
Monroe County, Michigan
Wayne County, Michigan
Chautauqua County, New York
Erie County, New York
Ashtabula County, Ohio
Cuyahoga County, Ohio
Erie County, Ohio
Lake County, Ohio
Lorain County, Ohio
Lucas County, Ohio
Ottawa County, Ohio
Sandusky County, Ohio
Wood County, Ohio
Erie County, Pennsylvania
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 Erie
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
63455
136092
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 coordinatesâș
erie_topobathy.tif
Table containing attribute information associated with the data set.
Producer Defined
OID
Internal object identifier.
Producer Defined
Sequential unique whole numbers that are automatically generated.
Value
Elevation in centimeters.
Producer Defined
9399
27777
cm
1
Count
Number of raster cells with this value.
Producer Defined
1.0
283752.0
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