Streamflow Maps (IMAGE) Indiana University Caption These maps shows two measurements of streamflow changes in natural and human-modified waterways across the US from 1981 to 2015, with bluer areas indicating increases in water flow and browner areas indicating decreases in water flow. Credit Darren Ficklin Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.