USGS - science for a changing world

New England Water Science Center - Connecticut Office

New England WSC    CT Office Home    NAWQA    Drought   Contact
Default picture of water to show

Shepaug River at Peters Dam at Woodville




About the Connecticut Office

Water Resources of Connecticut

Welcome to the USGS New England Water Science Center, Connecticut Office. These pages are your source for water-resource information collected and interpreted by the U.S. Geological Survey in Connecticut.

Current Streamflow Conditions Maps

Current streamflow conditions in Connecticut; click to go to a live map.
Click legend to learn about percentile classes

Current streamflow conditions in the United States

USGS Water Alert sends email or text messages when certain parameters measured by a USGS data-collection station exceed user-definable thresholds.

 In the Spotlight

Connecticut StreamStats

Connecticut StreamStatsStreamStats is a Web-based Geographic Information Systems application for use in water resources planning and mangement, and in engineering design. It computes streamflow statistics (e.g. 100-year flood, the mean annual flow, the 7-day, 10-year low flow) and basin characteristics (e.g. drainage area, soil properties, mean annual precipitation) for ungaged sites faster, more accurately, and more consistently than manual methods. See

NWIS Mapper

NWIS MapperLooking for a new way to access water data? This Google Maps interface quickly provides a map view of the sites with USGS water data. Simply zoom into your area of interest, check the boxes for the data you want, and click on your site. For more information on how to use NWIS Mapper visit

SPARROW Decision Support Tool

SPARROW Decision Support ToolSPARROW (SPAtially Referenced Regressions On Watershed attributes) is a watershed modeling technique for relating water-quality measurements made at a network of monitoring stations to attributes of the watersheds such as contaminant sources and environmental factors that affect rates of delivery to streams and in-stream processing. The models are documented in the report SPARROW MODELING—Enhancing Understanding of the Nation’s Water Quality

Highlighted Publications

The complete list of publications can be found on the USGS Publications Warehouse website.

OFR 2016-1007 USGS Open-File Report: 2016-1007
Nitrogen loads from selected rivers in the Long Island Sound Basin, 2005–13, Connecticut and Massachusetts


SIR 2015-5189 USGS Scientific Investigations Report 2015–5189
Nutrient, organic carbon, and chloride concentrations and loads in selected Long Island Sound tributaries—Four decades of change following the passage of the Federal Clean Water Act

SIR 2015-5057 USGS Scientific Investigations Report 2015–5057
Chloride Concentrations, Loads, and Yields in Four Watersheds Along Interstate 95, Southeastern Connecticut, 2008–11—Factors That Affect Peak Chloride Concentrations During Winter Storms

SIR 2015-5011 USGS Scientific Investigations Report: 2015-5011
Evaluation of the effects of sewering on nitrogen loads to the Niantic River, southeastern Connecticut, 2005–11


USGS Home Water Resources Biology Geography Geology Geospatial Program

Accessibility FOIA Privacy Policies and Notices

U.S. Department of the Interior | U.S. Geological Survey
Page Contact Information:
Page Last Modified: Wednesday, 04-Jan-2017 13:29:23 EST

01206900: Flow=28cfs,Stage=1.70ft,2016-12-16 08:30,Low,NAUGATUCK RIVER AT THOMASTON, CT 01204000: Flow=22cfs,Stage=2.54ft,Floodstage=9ft,2016-12-16 08:00,Low,POMPERAUG RIVER AT SOUTHBURY, CT 01189995: Flow=238cfs,Stage=0.99ft,Floodstage=9ft,2016-12-16 08:15,Low,FARMINGTON RIVER AT TARIFFVILLE, CT 01188090: Flow=148cfs,Stage=4.59ft,Floodstage=12ft,2016-12-16 08:30,Low,FARMINGTON RIVER AT UNIONVILLE, CT 01188000: Flow=1.5cfs,Stage=2.03ft,2016-12-16 08:15,Low,BUNNELL BROOK NEAR BURLINGTON, CT 01187300: Flow=4.3cfs,Stage=0.40ft,2016-12-16 08:30,Low,HUBBARD RIVER NEAR WEST HARTLAND, CT 01186000: Flow=52cfs,Stage=3.33ft,2016-12-16 08:30,Low,WEST BRANCH FARMINGTON RIVER AT RIVERTON, CT 01184490: Flow=6.5cfs,Stage=0.42ft,2016-12-16 08:45,Low,BROAD BROOK AT BROAD BROOK, CT 01184100: Flow=1.4cfs,Stage=1.31ft,2016-12-16 09:00,Low,STONY BROOK NEAR WEST SUFFIELD, CT 01123600: Flow=37cfs,Stage=3.40ft,2016-12-16 08:30,Low,QUINEBAUG R BL WESTVILLE DAM NR SOUTHBRIDGE, MA 01123360: Flow=22cfs,Stage=2.35ft,2016-12-16 08:30,Low,QUINEBAUG R BL E BRIMFIELD DAM AT FISKDALE, MA 01185500: Flow=527cfs,Stage=4.40ft,Floodstage=8ft,2016-12-16 08:30,>90,WEST BRANCH FARMINGTON RIVER NEAR NEW BOSTON, MA 01209700: Flow=15cfs,Stage=1.22ft,2016-12-16 08:30,<10,NORWALK RIVER AT SOUTH WILTON, CT 01209500: Flow=18cfs,Stage=3.12ft,2016-12-16 08:00,<10,SAUGATUCK RIVER NEAR WESTPORT, CT 01196620: Flow=10cfs,Stage=1.25ft,2016-12-16 08:15,<10,MILL RIVER NEAR HAMDEN, CT 01196500: Flow=71cfs,Stage=2.36ft,Floodstage=10ft,2016-12-16 08:00,<10,QUINNIPIAC RIVER AT WALLINGFORD, CT 01193500: Flow=45cfs,Stage=2.39ft,2016-12-16 08:15,<10,SALMON RIVER NEAR EAST HAMPTON, CT 01192500: Flow=34cfs,Stage=1.62ft,2016-12-16 08:30,<10,HOCKANUM RIVER NEAR EAST HARTFORD, CT 01191000: Flow=6.8cfs,Stage=1.50ft,2016-12-16 08:00,<10,NORTH BRANCH PARK RIVER AT HARTFORD, CT 01186500: Flow=44cfs,Stage=1.83ft,2016-12-16 08:30,<10,STILL RIVER AT ROBERTSVILLE, CT 01122500: Flow=169cfs,Stage=2.16ft,Floodstage=13ft,2016-12-16 08:30,<10,SHETUCKET RIVER NEAR WILLIMANTIC, CT 01208500: Flow=110cfs,Stage=1.45ft,Floodstage=12ft,2016-12-16 08:30,<10,NAUGATUCK RIVER AT BEACON FALLS, CT 01183500: Flow=181cfs,Stage=3.19ft,Floodstage=13ft,2016-12-16 08:30,<10,WESTFIELD RIVER NEAR WESTFIELD, MA 01124151: Flow=76cfs,Stage=0.87ft,2016-12-16 08:30,<10,QUINEBAUG RIVER AT WEST THOMPSON, CT 01121000: Flow=9.9cfs,Stage=1.30ft,Floodstage=7ft,2016-12-16 08:15,<10,MOUNT HOPE RIVER NEAR WARRENVILLE, CT 01119500: Flow=48cfs,Stage=2.80ft,Floodstage=8ft,2016-12-16 08:15,<10,WILLIMANTIC RIVER NEAR COVENTRY, CT 01208950: Flow=4.0cfs,Stage=1.21ft,2016-12-16 08:30,10-24,SASCO BROOK NEAR SOUTHPORT, CT 01208925: Flow=11cfs,Stage=1.02ft,2016-12-16 08:00,10-24,MILL RIVER NEAR FAIRFIELD, CT 01208873: Flow=4.2cfs,Stage=3.10ft,2016-12-16 08:55,10-24,ROOSTER RIVER AT FAIRFIELD, CT 01205500: Flow=589cfs,Stage=2.82ft,Floodstage=11ft,2016-12-16 08:30,10-24,HOUSATONIC RIVER AT STEVENSON, CT 01200500: Flow=772cfs,Stage=2.72ft,Floodstage=8ft,2016-12-16 08:00,10-24,HOUSATONIC RIVER AT GAYLORDSVILLE, CT 01200000: Flow=90cfs,Stage=1.20ft,Floodstage=9ft,2016-12-16 08:15,10-24,TENMILE RIVER NEAR GAYLORDSVILLE, CT 01199000: Flow=407cfs,Stage=2.40ft,Floodstage=7ft,2016-12-16 08:15,10-24,HOUSATONIC RIVER AT FALLS VILLAGE, CT 01195100: Flow=4.0cfs,Stage=1.88ft,2016-12-16 08:45,10-24,INDIAN RIVER NEAR CLINTON, CT 01184000: Flow=9000cfs,Stage=8.54ft,Floodstage=15ft,2016-12-16 08:30,10-24,CONNECTICUT RIVER AT THOMPSONVILLE, CT 01127000: Flow=577cfs,Stage=5.68ft,Floodstage=17.5ft,2016-12-16 08:30,10-24,QUINEBAUG RIVER AT JEWETT CITY, CT 01125500: Flow=212cfs,Stage=2.66ft,Floodstage=9.5ft,2016-12-16 08:45,10-24,QUINEBAUG RIVER AT PUTNAM, CT 01122000: Flow=118cfs,Stage=1.94ft,2016-12-16 08:30,10-24,NATCHAUG RIVER AT WILLIMANTIC, CT 01117800: Flow=45cfs,Stage=3.08ft,2016-12-16 08:45,10-24,WOOD RIVER NEAR ARCADIA, RI 01117500: Flow=85cfs,Stage=2.24ft,Floodstage=5ft,2016-12-16 08:45,10-24,PAWCATUCK RIVER AT WOOD RIVER JUNCTION, RI 01208990: Flow=26cfs,Stage=1.67ft,2016-12-16 08:00,25-75,SAUGATUCK RIVER NEAR REDDING, CT 01203600: Flow=16cfs,Stage=1.55ft,2016-12-16 08:10,25-75,NONEWAUG RIVER AT MINORTOWN, CT 01199050: Flow=58cfs,Stage=1.40ft,2016-12-16 08:00,25-75,SALMON CREEK AT LIME ROCK, CT 01194500: Flow=31cfs,Stage=2.15ft,2016-12-16 08:45,25-75,EAST BRANCH EIGHTMILE RIVER NEAR NORTH LYME, CT 01192883: Flow=40cfs,Stage=5.13ft,2016-12-16 08:00,25-75,COGINCHAUG RIVER AT MIDDLEFIELD, CT 01127500: Flow=77cfs,Stage=1.90ft,Floodstage=9ft,2016-12-16 08:45,25-75,YANTIC RIVER AT YANTIC, CT 01125000: Flow=116cfs,Stage=5.31ft,2016-12-16 08:30,25-75,FRENCH RIVER AT WEBSTER, MA 01124000: Flow=207cfs,Stage=3.01ft,2016-12-16 08:00,25-75,QUINEBAUG RIVER AT QUINEBAUG, CT 01123000: Flow=69cfs,Stage=2.13ft,2016-12-16 08:15,25-75,LITTLE RIVER NEAR HANOVER, CT 01118500: Flow=408cfs,Stage=4.77ft,Floodstage=7ft,2016-12-16 08:00,25-75,PAWCATUCK RIVER AT WESTERLY, RI 01118300: Flow=6.6cfs,Stage=1.43ft,2016-12-16 08:45,25-75,PENDELTON HILL BROOK NEAR CLARKS FALLS, CT 01111300: Flow=26cfs,Stage=3.55ft,2016-12-16 08:15,25-75,NIPMUC RIVER NEAR HARRISVILLE, RI 0137449480: Flow=82cfs,Stage=3.84ft,2016-12-16 08:30,Not ranked,EAST BRANCH CROTON RIVER NEAR PUTNAM LAKE NY 012112296: Stage=-3.52ft,2016-12-16 08:42,Not ranked,GREENWICH HARBOR AT GRASS ISLAND AT GREENWICH, CT 012095493: Flow=3.0cfs,Stage=1.84ft,2016-12-16 08:30,Not ranked,RIDGEFIELD BROOK AT SHIELDS LANE NR RIDGEFIELD, CT 012035055: Flow=5.8cfs,Stage=2.53ft,2016-12-16 08:30,Not ranked,POOTATUCK RIVER AT BERKSHIRE 011277905: Flow=26cfs,2015-09-30 23:30,Stage=2.13ft,2015-10-31 23:30:00,Not ranked,LATIMER BROOK NR I-95N EXIT 75 NR FLANDERS, CT 011230695: Flow=240cfs,Stage=5.06ft,2016-12-16 08:00,Not ranked,SHETUCKET RIVER AT TAFTVILLE, CT 01374890: Flow=48cfs,Stage=2.72ft,2016-12-16 08:30,Not ranked,CROSS RIVER NEAR CROSS RIVER NY 01374821: Flow=8.0cfs,Stage=1.76ft,2016-12-16 08:15,Not ranked,TITICUS RIVER AT PURDYS STATION NY 01374781: Flow=7.6cfs,Stage=1.84ft,2016-12-16 08:30,Not ranked,TITICUS RIVER BELOW JUNE ROAD AT SALEM CENTER NY 01374531: Flow=13cfs,Stage=1.35ft,2016-12-16 08:00,Not ranked,EAST BRANCH CROTON RIVER NEAR CROTON FALLS NY 01374505: Flow=15cfs,Stage=2.68ft,2016-12-16 08:30,Not ranked,EAST BRANCH CROTON RIVER AT BREWSTER NY 01212500: Flow=18cfs,Stage=2.07ft,2016-12-16 08:00,Not ranked,BYRAM RIVER AT PEMBERWICK, CT 01209901: Flow=29cfs,Stage=1.74ft,2016-12-16 08:45,Not ranked,RIPPOWAM RIVER AT STAMFORD, CT. 01209788: Stage=-2.22ft,2016-12-16 09:00,Not ranked,STAMFORD HURRICANE BARRIER AT STAMFORD, CT 01209761: Flow=0.12cfs,Stage=1.81ft,2016-12-16 08:00,Not ranked,FIVEMILE RIVER NEAR NEW CANAAN, CT 01209510: Stage=-3.46ft,2016-12-16 08:54,Not ranked,SAUGATUCK RIVER AT ROUTE 1 AT WESTPORT, CT 01209105: Flow=1.7cfs,Stage=2.35ft,2016-12-16 08:00,Not ranked,ASPETUCK RIVER AT ASPETUCK, CT 01209005: Flow=3.8cfs,Stage=2.31ft,2016-12-16 08:45,Not ranked,SAUGATUCK R BELOW SAUGATUCK RES NR LYONS PLAIN, CT 01208882: Stage=-0.77ft,2016-09-09 08:42,Not ranked,ASH CREEK AT FAIRFIELD AVE NEAR BLACK ROCK, CT 01203805: Flow=32cfs,Stage=2.20ft,2016-12-16 08:15,Not ranked,WEEKEEPEEMEE RIVER AT HOTCHKISSVILLE, CT 01203510: Flow=11cfs,Stage=3.19ft,2016-12-16 08:00,Not ranked,POOTATUCK RIVER AT SANDY HOOK, CT 01202501: Flow=2.3cfs,Stage=0.75ft,2016-12-16 08:15,Not ranked,SHEPAUG RIVER AT PETERS DAM AT WOODVILLE, CT 01201487: Flow=43cfs,Stage=6.44ft,2016-12-16 08:45,Not ranked,STILL RIVER AT ROUTE 7 AT BROOKFIELD CENTER, CT 01200600: 2016-04-16 18:15,Not ranked,HOUSATONIC RIVER NEAR NEW MILFORD, CT 01196561: Flow=0.21cfs,Stage=1.23ft,2016-12-16 08:15,Not ranked,MUDDY RIVER NEAR EAST WALLINGFORD, CT 01195490: Flow=4.5cfs,Stage=2.63ft,2016-12-16 06:45,Not ranked,QUINNIPIAC RIVER AT SOUTHINGTON, CT 01195290: Stage=-2.47ft,2016-12-16 08:42,Not ranked,GUILFORD HARBOR AT OLD WHITFIELD ST NR GUILFORD,CT 01194815: Stage=-1.72ft,2016-12-16 08:42,Not ranked,CONNECTICUT RIVER NR BRIDGE ST NR OLD SAYBROOK, CT 01194796: Stage=-0.83ft,2016-12-16 08:55,Not ranked,CONNECTICUT RIVER AT OLD LYME, CT 01194750: Stage=-1.56ft,2016-12-16 08:20,Not ranked,CONNECTICUT RIVER AT ESSEX, CT 01194000: Flow=12cfs,Stage=2.47ft,2016-12-16 08:15,Not ranked,EIGHTMILE RIVER AT NORTH PLAIN, CT 01193050: Flow=14300cfs,2016-12-16 08:45,Stage=-1.02ft,2016-12-16 08:55:00,Floodstage=7ft,Not ranked,CONNECTICUT RIVER AT MIDDLE HADDAM, CT 01190070: Stage=1.15ft,Floodstage=16ft,2016-12-16 08:30,Not ranked,CONNECTICUT RIVER AT HARTFORD, CT 01189213: Stage=0.98ft,Floodstage=12ft,2016-12-16 08:30,Not ranked,FARMINGTON RIVER AT SIMSBURY, CT 01125490: Flow=27cfs,Stage=1.80ft,2016-12-16 09:00,Not ranked,LITTLE RIVER AT HARRISVILLE, CT 01125100: Flow=85cfs,Stage=6.95ft,2016-12-16 08:15,Not ranked,FRENCH RIVER AT NORTH GROSVENORDALE, CT 01121330: Flow=13cfs,Stage=3.41ft,2016-12-16 08:15,Not ranked,FENTON RIVER AT MANSFIELD, CT 01120790: Flow=89cfs,Stage=3.08ft,2016-12-16 08:00,Not ranked,NATCHAUG RIVER AT MARCY RD. NEAR CHAPLIN, CT 01119382: Flow=21cfs,Stage=0.89ft,2016-12-16 08:15,Not ranked,WILLIMANTIC RIVER AT MERROW RD. NEAR MERROW, CT 01118000: Flow=141cfs,Stage=2.58ft,Floodstage=5ft,2016-12-14 10:15,Not ranked,WOOD RIVER AT HOPE VALLEY, RI 01115187: Flow=51cfs,Stage=2.09ft,2016-12-16 08:00,Not ranked,PONAGANSET RIVER AT SOUTH FOSTER, RI Go to WaterWatch (offsite) for a larger map with additional options