Arkansas River

Nitrate in the Mississippi River and Its Tributaries, 1980-2010: An Update

Iowa River, I. River, Arkansas River, 2013 .

Trends in Precipitation and Streamflow in the Fountain Creek Watershed, Southeastern Colorado, 1977-99

Arkansas River, Colorado Springs, Fountain Creek, 2000 .

The USGS Fort Collins Science Center's Invasive Species Science Branch

Arkansas River, Arkansas River, 2011 .