Water Resources of the U.S.—National Water Information System (NWIS) Mapper Posted on December 6, 2010 by Larry Activist Corner, Groundwater Impacts, Lakes and Resevoirs Impacts, Streams and Wetlands Impacts, Water Conservation Issue Here is a link to get water resources anywhere in the United States–the National Water Information System Mapper: –Larry http://wdr.water.usgs.gov/nwisgmap/