The Minnesota LakeBrowser is an online, interactive lake water clarity/quality mapping tool with Landsat- derived classifications of lake clarity of more than 10,500 lakes measured nine times from 1975 to 2015. Also available on the LakeBrowser are searchable statewide maps of chlorophyll concentrations and CDOM levels in > 10,000 lakes for several recent years. The information on chlorophyll concentrations is based on the European satellite series,Sentinel-2.
Typically, the LakeBrowser is used to find water clarity or quality information for a particular Minnesota lake. To do so, you can either zoom in and out of areas to locate the lake of interest, or search lakes by typing the lake name in the Search box. Once you have found the lake, you can retrieve more detailed information from the Minnesota Pollution Control Agency (PCA) and Department of Natural Resources (DNR).
Landsat data have been archived since Landsat 1 was launched in 1972 at the EROS Center and enable us to retrospectively classify images and examine historical trends. This type of information helps resource managers target problem areas, enables systematic monitoring of inland lakes, and demonstrates the power of satellite remote sensing. With statewide lake water clarity and quality data for more than one time period, statistical summaries statistical summaries that compare conditions over time by county, ecoregion and for the whole state can be developed.