New EPA Map Shows Where Drinking Water is Reliant on Rivers and Streams

As part of EPA’s effort to highlight the importance of streams and the jurisdiction of the Clean Water Act, the Agency has launched a new MAP on its web site.  The map shows where the U.S. population gets it drinking water from public water systems that rely in part on headwater, seasonal, or rain-dependent streams on a county by county basis.  For more information about the importance of streams (including their role in providing drinking water and recharging underground aquifers), visit EPA’s web site HERE.


EPA Releases Report on Importance of Water to U.S. Economy

EPA has released a report that: highlights the Agency’s review of the literature and practice on the importance of water to the U.S. economy; identifies key data gaps, describes the implication of the study’s findings for future research; and summarizes information that public and private decision-makers can use to better manage the nation’s water resources.  The reports main findings are as follows:


  • Water is absolutely fundamental to the U.S. economy;
  • Water value and competition will rise; and
  • Decision-makers in the private and public sectors need more information.


Visit EPA’s web site to read the report or read the blog about the report by Nancy Stoner, Acting Assistant Administrator for EPA’s Office of Water.

Access Information Now Available for November 20 (New Date) USGS Webinar on Groundwater Pumping and Streamflow Depletion

On Wednesday, November 20th, from 1:00-2:30 PM (eastern), USGS scientists and partners with the Lower Loup Natural Resources District in Nebraska will describe recent advances in the development of a USGS mapping tool and provide an example of the use of capture maps to better understand and manage effects of groundwater pumping and streamflow depletion in the Elkhorn and Loup River Basins of central Nebraska.  Visit the USGS web site to view the abstract and maps.


Space is limited, please connect to the webinar and teleconference 5-10 minutes ahead of the scheduled time to reserve a spot.   Viewing is encouraged in common meeting rooms, to allow as many to attend as possible.
Webinar Logistics


  1. Go to:
  2. Enter your name and email address.
  3. Enter the session password: wells1
  4. Click “Join Now”.
  5. Follow the instructions that appear on your screen.


You must also join the session by phone


Cal toll free:  855-547-8255
Security Code:  58494, then #.

New USGS Report on Nitrate Trends in Mississippi River and Tributaries

The U.S. Geological Survey (USGS) has released a new report entitled, “Nitrate in the Mississippi River and Its Tributaries, 1980–2010: An Update.”   The report describes 30-year, 20-year, and 10-year annual and spring (April through June) trends at eight sites in the Mississippi River basin from 1980 to 2010.  These results reflect the cumulative changes over time in nitrate sources and conservation practices throughout the Mississippi River basin, and highlight the need for comprehensive nutrient management strategies that will reduce nutrients in both streams and groundwater.  According to the study, key nitrate concentration trend findings at long-term USGS monitoring sites were as follows:


  • Nitrate concentrations steadily decreased by 21 percent in the Illinois River from 2000 to 2010.  Decreases were also noted in the Iowa River during this time, but the declines were not as large (10 percent).
  • Consistent increases in nitrate concentrations occurred between 2000 and 2010 in the upper Mississippi River (29 percent) and the Missouri River (43 percent).
  • Nitrate concentrations in the Ohio River are the lowest among the eight Mississippi River Basin sites and have remained relatively stable over the last 30 years.
  • Nitrate concentrations increased at the Mississippi River outlet by 12 percent between 2000 and 2010.


To view the report, visit the USGS web site at:  For more information about this study, contact Lori Sprague of USGS at or 208-387-1358.