USGS Water-Year Summary 2018
01073319 LAMPREY RIVER AT LANGFORD ROAD, AT RAYMOND, NH
LOCATION - Lat 43°02'29", long 71°12'06" referenced to North American Datum of 1983, Rockingham County, NH, Hydrologic Unit 01060003, on left bank 100 ft downstream from Langford Road bridge, 200 ft southwest of Langford Road and NH 27/107 intersection, 1.0 mi west of Epping Street and Main Street intersection in Raymond, and 1.7 mi southeast of NH 27 and Deerfield Road (NH 107) western intersection.
DRAINAGE AREA - 55.7 mi².
PERIOD OF RECORD - July 2008 to current year.
GAGE - Water-stage recorder and crest-stage gage. Elevation of gage is 182.49 ft above National Geodetic Vertical Datum of 1988.
COOPERATION - New Hampshire Department of Environmental Services and USGS Groundwater and Streamflow Information Program.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood in April 2007 reached a stage of 13.97 ft, from floodmarks.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 4,340 ft³/s, March 15, 2010, gage height 9.70 ft; minimum discharge, 0.22 ft³/s, September 17 and 18, 2016.
PERIOD OF RECORD - July 3, 2008 to July 9, 2013; June 23, 2016 to current year.
INSTRUMENTATION - Water-temperature recorder since July 3, 2008 provides continuous recordings.