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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
01053600 ANDROSCOGGIN RIVER BELOW BOG BROOK AT CAMBRIDGE, NH
LOCATION - Lat 44°39'58", long 71°10'53" referenced to North American Datum of 1983, Coos County, NH, Hydrologic Unit 01040001, on right bank 0.1 mi downstream from Bog Brook, 4 mi upstream from Pontook Dam, and 8 mi north of Milan, New Hampshire.
DRAINAGE AREA - 1,177 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - DISCHARGE: October 2008 to current year.
MISCELLANEOUS MEASUREMENTS: 1991, 2004, 2006.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 1,180 ft above National Geodetic Vertical Datum of 1929, from topographic map.
REMARKS - Flow regulated by Rangeley, Mooselookmeguntic, Richardson, Aziscohos, and Umbagog Lakes, with final regulation at Errol Dam, 12.3 mi upstream.
Water Year 2020: Records good, except for estimated daily discharges, which are fair.
Water Year 2019: Records good, except for estimated daily discharges, which are fair.
Water Year 2018: Records good, except for estimated daily discharges, which are fair.
Water Year 2017: Records good, except for periods of ice effect, Dec. 11, 15-27, Jan. 7-17, Feb. 10-14, and period of no gage-height record, Feb. 11-12, which are fair.
Water Year 2016: Records good, except for periods of ice effect, Dec. 29-30, Jan. 5-24, Feb. 12-16, and Feb. 27 to Mar. 5, which are fair.
Water Year 2015: Records good, including periods of ice effect, Dec. 30 to Jan. 1, and Jan. 4 to Mar. 26.
Water Year 2014: Records good, including periods of ice effect, Dec. 12-19, 25-29, Dec. 31 to Jan. 11, Jan. 22-25, Feb. 12-13, 17-18, Mar. 1, 4, 6-7, 12-14, 17, 27, and period of no gage-height record Sept. 24-25.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 13,700 ft³/s, Apr. 16, 2014, gage height 7.23 ft; minimum daily discharge, 738 ft³/s, Sept. 4, 2015.
