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Heading into HAB Season
USGS scientists studying the Illinois River demonstrated how the often-overlooked river transport component of harmful algal blooms (HABs) can be quantified to better identify where, when, and why algae grow in river networks. The Illinois River basin is the site of several ongoing USGS IWAAs program projects.
The river transport article also is one of several USGS Proxies projects. For more information, contact USGS scientist, Noah Schmadel.
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New Nationwide Lake Dataset
A recent USGS publication presents the Lake Trophic State - US dataset, a compilation of lake trophic state estimates for 55,662 lakes throughout the contiguous US (1984 – 2020). The work brings together sampling efforts from the US EPA's National Lake Assessment with the remotely-sensed Landsat archive to identify lake water quality shifts.
For more information, read the article or contact USGS scientist Michael Meyer.
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Rivers Know No Borders
USGS Scientists have created an interactive story map for rivers along the US-Canada border due to a shared desire to support human and ecological health. This story map, or geonarrative, provides a visual, multimedia experience of USGS science on these shared rivers.
See the story map, learn more about transboundary river monitoring, or contact USGS scientist Alex Headman.
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Upcoming Webinar on New Baseflow Forecast Tool
Database Updated to Include PFAS
USGS worked with EPA to expand the Health-Based Screening Levels (HSBLs) database to include 27 per- and polyfluorinated alkyl substances (PFAS) chemicals. The database also reflects updated EPA procedures for drinking-water contaminants. The searchable HBSL database now contains 835 contaminants.
For more information, search the database or contact USGS scientist Cassandra Smith.
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About the USGS Water Mission Area
Water information is fundamental to national and local economic well-being, protection of life and property, and effective management of the Nation’s water resources. The USGS works with partners to monitor, assess, conduct targeted research, and deliver information on a wide range of water resources and conditions including streamflow, groundwater, water quality, and water use and availability.
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