ESTIMATED EFFECTS OF GROUND-WATER WITHDRAWALS ON STREAM-WATER LEVELS OF THE PLEASANT RIVER NEAR CREBO FLATS, MAINE, JULY 1 TO SEPTEMBER 30, 2005

In 2006 the U.S. Geological Survey (USGS) analyzed available surface-water data collected at two USGS streamflow-gaging stations located on the Pleasant River near Crebo Flat, Maine to determine whether withdrawals from an irrigation well near the river were affecting streamflows. The study demonstrated how streamwater levels measured at the nearby streamflow-gaging stations related to ground-water withdrawals during the summer of 2005 and provided a way to estimate the related short-term streamflow depletion. The data, methods, and results presented are a case study in the consideration of the effects of irrigation withdrawals on streamflows from wells in similar stream-aquifer systems in Maine. This study is documented in USGS Scientific Investigations Report 2006–5268 available online at http://pubs.usgs.gov/sir/2006/5268/pdf/SIR2006-5268.pdf.