The U.S. Geological Survey (USGS), in cooperation with the Michigan Department of Environmental Quality (MDEQ), use a technique modeled after Olmanson and others (2001) to predict water clarity and corresponding trophic state index (TSI) values based on the Carlson's Trophic State Index (TSI) in inland lakes greater than 20 acres using satellite remote sensing data. Measurements from the Cooperative Lakes Monitoring Program, which is a network of volunteers coordinated by the MDEQ that monitor lake water quality, are used along with dedicated SDT measurements by USGS crews to supplement in the Upper Peninsula of Michigan. Available online are statewide layers with predicted Secchi-disk and corresponding trophic state index (TSI) values for Michigan inland lakes.
Michigan Lake Water Clarity Interactive Map Viewer (currently offline)
Available online are estimated Secchi-disk transparency (eSDT) and corresponding estimated trophic state index (eTSI) values for Michigan inland lakes.
To view available eSDT for Michigan inland lakes greater than 20 acres without interference from clouds, cloud shadows, dense vegetation or shoreline, go to the Michigan Lake Water Clarity Interactive Map Viewer.
* The Michigan Lake Water Clarity Interactive Map Viewer was updated with additional eSDT data January, 2016.
We are interested to learn how the data is being used. Please contact Lisa Fogarty at lrfogart@usgs.gov with your information and project.
Estimated Secchi-disk transparency (eSDT) and corresponding estimated trophic state index (eTSI) values. Data is available for download in shapefile format with metadata in the zip file in the Data and Tools tab:
- 1999-2000 eSDT
- 2002 eSDT
- 2003-2005 eSDT
- 2007-2008 eSDT
- 2009-2010 eSDT
- 2011 eSDT
- 2013 eSDT
Shapefiles of the distributions are contained in a ZIP file (.ZIP). Microsoft® Windows® 7 and up have a built-in programs that allows a file or folder to be compressed or uncompressed. You can also use WinZip®, PKZip®, or similar program to extract in Microsoft® Windows®; use Stuffit Expander™ or similar to unzip on Macintosh; Use UnZip or similar program to extract on UNIX® computers.
NOTICE: Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Federal Government.
"Microsoft and Windows are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries."
"WinZip is a registered Trademark of WinZip International LLC"
"PKZIP is a registered trademarks of PKWARE, Inc."
"StuffIt Expander is a trademark of Smith Micro Software, Inc."
"UNIX is a registered trademark of The Open Group."
All other trademarks and trade names are the property of their respective owners.
Remote Sensing - Reports/Fact Sheets
Predicting lake trophic state by relating Secchi-disk transparency measurements to Landsat-satellite imagery for Michigan inland lakes, 2003-05 and 2007-08
Predicting water quality by relating secchi-disk transparency and chlorophyll a measurements to Landsat satellite imagery for Michigan inland lakes, 2001-2006
Predicting water quality by relating secchi-disk transparency and chlorophyll a measurements to satellite imagery for Michigan inland lakes, August 2002
Below are partners associated with this project.
- Overview
The U.S. Geological Survey (USGS), in cooperation with the Michigan Department of Environmental Quality (MDEQ), use a technique modeled after Olmanson and others (2001) to predict water clarity and corresponding trophic state index (TSI) values based on the Carlson's Trophic State Index (TSI) in inland lakes greater than 20 acres using satellite remote sensing data. Measurements from the Cooperative Lakes Monitoring Program, which is a network of volunteers coordinated by the MDEQ that monitor lake water quality, are used along with dedicated SDT measurements by USGS crews to supplement in the Upper Peninsula of Michigan. Available online are statewide layers with predicted Secchi-disk and corresponding trophic state index (TSI) values for Michigan inland lakes.
Michigan Lake Water Clarity Interactive Map Viewer (currently offline)
Available online are estimated Secchi-disk transparency (eSDT) and corresponding estimated trophic state index (eTSI) values for Michigan inland lakes.
To view available eSDT for Michigan inland lakes greater than 20 acres without interference from clouds, cloud shadows, dense vegetation or shoreline, go to the Michigan Lake Water Clarity Interactive Map Viewer.
* The Michigan Lake Water Clarity Interactive Map Viewer was updated with additional eSDT data January, 2016.
We are interested to learn how the data is being used. Please contact Lisa Fogarty at lrfogart@usgs.gov with your information and project.
Estimated Secchi-disk transparency (eSDT) and corresponding estimated trophic state index (eTSI) values. Data is available for download in shapefile format with metadata in the zip file in the Data and Tools tab:
- 1999-2000 eSDT
- 2002 eSDT
- 2003-2005 eSDT
- 2007-2008 eSDT
- 2009-2010 eSDT
- 2011 eSDT
- 2013 eSDT
Shapefiles of the distributions are contained in a ZIP file (.ZIP). Microsoft® Windows® 7 and up have a built-in programs that allows a file or folder to be compressed or uncompressed. You can also use WinZip®, PKZip®, or similar program to extract in Microsoft® Windows®; use Stuffit Expander™ or similar to unzip on Macintosh; Use UnZip or similar program to extract on UNIX® computers.
NOTICE: Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Federal Government.
"Microsoft and Windows are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries."
"WinZip is a registered Trademark of WinZip International LLC"
"PKZIP is a registered trademarks of PKWARE, Inc."
"StuffIt Expander is a trademark of Smith Micro Software, Inc."
"UNIX is a registered trademark of The Open Group."All other trademarks and trade names are the property of their respective owners.
- Publications
Remote Sensing - Reports/Fact Sheets
Predicting lake trophic state by relating Secchi-disk transparency measurements to Landsat-satellite imagery for Michigan inland lakes, 2003-05 and 2007-08
Inland lakes are an important economic and environmental resource for Michigan. The U.S. Geological Survey and the Michigan Department of Natural Resources and Environment have been cooperatively monitoring the quality of selected lakes in Michigan through the Lake Water Quality Assessment program. Sampling for this program began in 2001; by 2010, 730 of Michigan’s 11,000 inland lakes are expectedPredicting water quality by relating secchi-disk transparency and chlorophyll a measurements to Landsat satellite imagery for Michigan inland lakes, 2001-2006
The State of Michigan has more than 11,000 inland lakes; approximately 3,500 of these lakes are greater than 25 acres. The USGS, in cooperation with the Michigan Department of Environmental Quality (MDEQ), has been monitoring the quality of inland lakes in Michigan through the Lake Water Quality Assessment monitoring program. Approximately 100 inland lakes will be sampled per year from 2001 to 201Predicting water quality by relating secchi-disk transparency and chlorophyll a measurements to satellite imagery for Michigan inland lakes, August 2002
Inland lakes are an important economic and environmental resource for Michigan. The U.S. Geological Survey and the Michigan Department of Environmental Quality have been cooperatively monitoring the quality of selected lakes in Michigan through the Lake Water Quality Assessment program. Through this program, approximately 730 of Michigan's 11,000 inland lakes will be monitored once during this 15- - Partners
Below are partners associated with this project.