Indiana Water Monitoring Council 
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                  coordination, data sharing, and collaboration

EPA Watershed Academy Webcast

  • 05 Jan 2010
  • 1:00 PM - 3:00 PM
  • Virtual

Free Watershed Academy Webcast
"National Lakes Assessment: Reporting on the Condition of the Nation's Lakes"

Tuesday, January 5, 2010
Eastern: 1:00 p.m. – 3:00 p.m. Central: 12:00 p.m. – 2:00 p.m  (2-hr audio broadcast)
Webcast participants are eligible to receive a certificate for their attendance. To register, visit

Join us for a Webcast to learn about the first-ever assessment of the condition of the nation’s lakes. This draft report, the National Lakes Assessment: A Collaborative Survey of the Nation’s Lakes, is available for public review and comment at: The report shows that 56% of the nation’s lakes support healthy biological communities. The report also identifies poor lakeshore habitat conditions and high levels of nutrients as widespread stressors impacting lake water quality in the United States.

Speakers: Sarah Lehmann, Team Leader for National Aquatic Resource Surveys, Monitoring Branch, EPA's Office of Water; and Neil C. Kamman, Chief, Water Quality Monitoring, Assessment and Planning, Vermont Department of Environmental Conservation

  • Tune into this Webcast to learn more about the National Lakes Assessment (NLA), which is the latest in a series of surveys of the nation’s aquatic resources being conducted by EPA and its state and tribal partners.
  • The NLA provides unbiased estimates of the condition of natural and man-made freshwater lakes, ponds and reservoirs greater than 10 acres and at least one meter deep. Using a statistical survey design, 1,028 lakes were selected at random to represent the condition of the larger population of lakes across the lower 48 states.  
  • And finally, the NLA presents data on the extent of lakes that support healthy biological communities, selected stressors impacting lake quality, and information on recreational indicators of lake condition such as microcystin, an algal toxin which can harm humans, pets, and wildlife. The NLA also reports on lake trophic status and includes comparisons of current data to 1972 data on wastewater-impacted lakes.

The Webcast presentations are posted in advance at, and participants are encouraged to download them prior to the Webcast.

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