Warning: Javascript must be enabled to use all the features on this page!
Click to hideNews Bulletins

USGS Current Water Data for Massachusetts





Daily Streamflow Conditions

Select a site to retrieve data and station information.
Stream gage levels in Massachusetts, relative to 30 year average. 01333000: Flow=34.3cfs,Stage=1.96ft,2017-12-10 21:15,<10,GREEN RIVER AT WILLIAMSTOWN, MA01198000: Flow=27.0cfs,Stage=0.63ft,2017-12-10 21:30,<10,GREEN RIVER NEAR GREAT BARRINGTON, MA01179500: Flow=43.1cfs,Stage=2.61ft,2017-12-10 21:30,<10,WESTFIELD RIVER AT KNIGHTVILLE, MA01105880: Flow=12.6cfs,Stage=2.34ft,2017-12-10 21:45,76-90,HERRING RIVER AT NORTH HARWICH, MA01183500: Flow=310cfs,Stage=3.69ft,Floodstage=13ft,2017-12-10 21:30,10-24,WESTFIELD RIVER NEAR WESTFIELD, MA01181000: Flow=69.0cfs,Stage=3.60ft,2017-12-10 21:30,10-24,WEST BRANCH WESTFIELD RIVER AT HUNTINGTON, MA01171500: Flow=34.3cfs,Stage=5.87ft,Floodstage=11ft,2017-12-10 21:15,10-24,MILL RIVER AT NORTHAMPTON, MA01170100: Flow=38.9cfs,Stage=3.19ft,2017-12-10 21:15,10-24,GREEN RIVER NEAR COLRAIN, MA01169900: Flow=22.2cfs,Stage=1.88ft,2017-12-10 21:00,10-24,SOUTH RIVER NEAR CONWAY, MA01114000: Flow=18.4cfs,Stage=1.61ft,2017-12-10 21:45,10-24,MOSHASSUCK RIVER AT PROVIDENCE, RI01105730: Flow=31.7cfs,Stage=1.93ft,2017-12-10 21:30,10-24,INDIAN HEAD RIVER AT HANOVER, MA01105600: Flow=3.72cfs,Stage=2.71ft,2017-12-10 21:00,10-24,OLD SWAMP RIVER NEAR SOUTH WEYMOUTH, MA01105585: Flow=2.39cfs,Stage=1.81ft,2017-12-10 21:00,10-24,TOWN BROOK AT QUINCY, MA01102000: Flow=59.1cfs,Stage=3.29ft,Floodstage=7ft,2017-12-10 22:00,10-24,IPSWICH RIVER NEAR IPSWICH, MA01098530: Flow=74.6cfs,Stage=4.92ft,Floodstage=10ft,2017-12-10 21:15,10-24,SUDBURY RIVER AT SAXONVILLE, MA01096500: Flow=290cfs,Stage=1.99ft,Floodstage=8ft,2017-12-10 21:30,10-24,NASHUA RIVER AT EAST PEPPERELL, MA010965852: Flow=41.1cfs,2017-12-10 20:15,Stage=6.25ft,2017-12-10 21:15:00,25-75,BEAVER BROOK AT NORTH PELHAM, NH01332500: Flow=165cfs,Stage=5.57ft,Floodstage=9ft,2017-12-10 21:00,25-75,HOOSIC RIVER NEAR WILLIAMSTOWN, MA01331500: Flow=52.3cfs,Stage=5.92ft,2017-12-10 21:45,25-75,HOOSIC RIVER AT ADAMS, MA01199000: Flow=559cfs,Stage=2.66ft,Floodstage=7ft,2017-12-10 21:15,25-75,HOUSATONIC RIVER AT FALLS VILLAGE, CT01197500: Flow=299cfs,Stage=2.37ft,Floodstage=9ft,2017-12-10 21:30,25-75,HOUSATONIC RIVER NEAR GREAT BARRINGTON, MA01197000: Flow=54.1cfs,Stage=0.99ft,Floodstage=5ft,2017-12-10 21:30,25-75,EAST BRANCH HOUSATONIC RIVER AT COLTSVILLE, MA01186500: Flow=80.1cfs,Stage=2.11ft,2017-12-10 21:30,25-75,STILL RIVER AT ROBERTSVILLE, CT01186000: Flow=191cfs,Stage=3.88ft,2017-12-10 21:30,25-75,WEST BRANCH FARMINGTON RIVER AT RIVERTON, CT01185500: Flow=110cfs,Stage=3.12ft,Floodstage=8ft,2017-12-10 21:30,25-75,WEST BRANCH FARMINGTON RIVER NEAR NEW BOSTON, MA01184100: Flow=8.24cfs,Stage=1.49ft,2017-12-10 22:00,25-75,STONY BROOK NEAR WEST SUFFIELD, CT01184000: Flow=12500cfs,Stage=8.95ft,Floodstage=15ft,2017-12-10 21:30,25-75,CONNECTICUT RIVER AT THOMPSONVILLE, CT01177000: Flow=866cfs,Stage=5.22ft,Floodstage=12ft,2017-12-10 21:30,25-75,CHICOPEE RIVER AT INDIAN ORCHARD, MA01176000: Flow=208cfs,Stage=3.56ft,2017-12-10 21:15,25-75,QUABOAG RIVER AT WEST BRIMFIELD, MA01175670: Flow=9.79cfs,Stage=9.53ft,2017-12-10 21:30,25-75,SEVENMILE RIVER NEAR SPENCER, MA01175500: Flow=37.5cfs,Stage=2.08ft,2017-12-10 21:15,25-75,SWIFT RIVER AT WEST WARE, MA01174500: Flow=90.3cfs,Stage=19.63ft,2017-12-10 21:30,25-75,EAST BRANCH SWIFT RIVER NEAR HARDWICK, MA01173500: Flow=266cfs,Stage=2.83ft,2017-12-10 21:30,25-75,WARE RIVER AT GIBBS CROSSING, MA01173000: Flow=131cfs,Stage=4.30ft,2017-12-10 21:15,25-75,WARE RIVER AT INTAKE WORKS NEAR BARRE, MA01172500: Flow=87.1cfs,Stage=3.30ft,2017-12-10 21:30,25-75,WARE RIVER NEAR BARRE, MA01170500: Flow=14700cfs,Stage=12.09ft,Floodstage=28ft,2017-12-10 21:30,25-75,CONNECTICUT RIVER AT MONTAGUE CITY, MA01170000: Flow=1560cfs,Stage=3.41ft,2017-12-10 21:30,25-75,DEERFIELD RIVER NEAR WEST DEERFIELD, MA01169000: Flow=94.0cfs,Stage=2.19ft,Floodstage=9ft,2017-12-10 21:30,25-75,NORTH RIVER AT SHATTUCKVILLE, MA01168500: Flow=827cfs,Stage=2.99ft,2017-12-10 21:30,25-75,DEERFIELD RIVER AT CHARLEMONT, MA01166500: Flow=628cfs,Stage=3.04ft,2017-12-10 21:00,25-75,MILLERS RIVER AT ERVING, MA01163200: Flow=48.8cfs,Stage=1.20ft,2017-12-10 21:15,25-75,OTTER RIVER AT OTTER RIVER, MA01162500: Flow=28.6cfs,Stage=2.90ft,2017-12-10 21:45,25-75,PRIEST BROOK NEAR WINCHENDON, MA01162000: Flow=123cfs,Stage=4.53ft,2017-12-10 21:00,25-75,MILLERS RIVER NEAR WINCHENDON, MA01161000: Flow=614cfs,Stage=4.42ft,2017-12-10 21:45,25-75,ASHUELOT RIVER AT HINSDALE, NH01124000: Flow=202cfs,Stage=3.03ft,2017-12-10 22:00,25-75,QUINEBAUG RIVER AT QUINEBAUG, CT01123600: Flow=122cfs,Stage=4.01ft,2017-12-10 21:30,25-75,QUINEBAUG R BL WESTVILLE DAM NR SOUTHBRIDGE, MA01123360: Flow=84.9cfs,Stage=3.15ft,2017-12-10 21:30,25-75,QUINEBAUG R BL E BRIMFIELD DAM AT FISKDALE, MA01116500: Flow=282cfs,Stage=4.32ft,Floodstage=9ft,2017-12-10 21:45,25-75,PAWTUXET RIVER AT CRANSTON, RI01114500: Flow=80.7cfs,Stage=2.56ft,Floodstage=5.5ft,2017-12-10 21:45,25-75,WOONASQUATUCKET RIVER AT CENTERDALE, RI01112500: Flow=688cfs,Stage=2.47ft,Floodstage=9ft,2017-12-10 21:30,25-75,BLACKSTONE RIVER AT WOONSOCKET, RI01111500: Flow=188cfs,Stage=3.02ft,2017-12-10 21:15,25-75,BRANCH RIVER AT FORESTDALE, RI01111300: Flow=24.6cfs,Stage=3.60ft,2017-12-10 21:15,25-75,NIPMUC RIVER NEAR HARRISVILLE, RI01110000: Flow=28.7cfs,Stage=1.47ft,2017-12-10 22:00,25-75,QUINSIGAMOND RIVER AT NORTH GRAFTON, MA01109403: Flow=64.0cfs,Stage=2.71ft,2017-12-10 21:15,25-75,TEN MILE R., PAWTUCKET AVE. AT E. PROVIDENCE, RI01109070: Flow=16.3cfs,Stage=2.20ft,2017-12-10 21:45,25-75,SEGREGANSET RIVER NEAR DIGHTON, MA01109060: Flow=119cfs,Stage=3.10ft,2017-12-10 21:15,25-75,THREEMILE RIVER AT NORTH DIGHTON, MA01109000: Flow=42.9cfs,Stage=5.80ft,Floodstage=9.5ft,2017-12-10 21:15,25-75,WADING RIVER NEAR NORTON, MA01108000: Flow=306cfs,Stage=4.07ft,Floodstage=8ft,2017-12-10 21:45,25-75,TAUNTON RIVER NEAR BRIDGEWATER, MA01105870: Flow=21.1cfs,Stage=2.93ft,2017-12-10 21:15,25-75,JONES RIVER AT KINGSTON, MA01105500: Flow=33.3cfs,Stage=1.24ft,2017-12-10 21:15,25-75,EAST BRANCH NEPONSET RIVER AT CANTON, MA01105000: Flow=37.8cfs,Stage=6.09ft,Floodstage=9ft,2017-12-10 21:15,25-75,NEPONSET RIVER AT NORWOOD, MA01104500: Flow=211cfs,Stage=1.60ft,Floodstage=5ft,2017-12-10 21:30,25-75,CHARLES RIVER AT WALTHAM, MA01104200: Flow=167cfs,Stage=3.27ft,2017-12-10 21:15,25-75,CHARLES RIVER AT WELLESLEY, MA01104000: Flow=75.2cfs,Stage=81.10ft,2017-12-10 21:15,25-75,MOTHER BROOK AT DEDHAM, MA01103500: Flow=215cfs,Stage=1.28ft,Floodstage=5ft,2017-12-10 21:45,25-75,CHARLES RIVER AT DOVER, MA01102500: Flow=23.6cfs,Stage=7.63ft,2017-12-10 21:00,25-75,ABERJONA RIVER AT WINCHESTER, MA01101500: Flow=26.6cfs,Stage=2.60ft,2017-12-10 21:30,25-75,IPSWICH RIVER AT SOUTH MIDDLETON, MA01101000: Flow=23.3cfs,Stage=1.91ft,2017-12-10 21:30,25-75,PARKER RIVER AT BYFIELD, MA01100000: Flow=6380cfs,Stage=43.65ft,Floodstage=52ft,2017-12-10 21:30,25-75,MERRIMACK RIVER BL CONCORD RIVER AT LOWELL, MA01099500: Flow=410cfs,Stage=4.96ft,Floodstage=8ft,2017-12-10 21:30,25-75,CONCORD R BELOW R MEADOW BROOK, AT LOWELL, MA01097300: Flow=9.93cfs,Stage=3.83ft,2017-12-10 21:45,25-75,NASHOBA BROOK NEAR ACTON, MA01097000: Flow=122cfs,Stage=2.18ft,Floodstage=5ft,2017-12-10 21:15,25-75,ASSABET RIVER AT MAYNARD, MA01096000: Flow=80.6cfs,Stage=2.36ft,Floodstage=7ft,2017-12-10 21:00,25-75,SQUANNACOOK RIVER NEAR WEST GROTON, MA01094500: Flow=157cfs,Stage=2.57ft,2017-12-10 21:15,25-75,NORTH NASHUA RIVER NEAR LEOMINSTER, MA01094400: Flow=102cfs,Stage=2.92ft,Floodstage=6.5ft,2017-12-10 21:30,25-75,NORTH NASHUA RIVER AT FITCHBURG, MA422302071083801: Stage=16.16ft,2017-12-10 21:45,Not ranked,FRESH POND IN GATE HOUSE AT CAMBRIDGE, MA420259070105600: Stage=-0.48ft,2017-12-10 20:15,Not ranked,PROVINCETOWN TIDE GAGE, PROVINCETOWN, MA414507070091400: Stage=-4.98ft,2017-12-10 22:00,Not ranked,SESUIT HARBOR TIDE GAGE AT DENNIS, MA413758070320501: Stage=44.20ft,2017-12-10 21:15,Not ranked,ASHUMET POND NEAR FALMOUTH, MA413601070275800: Stage=-0.14ft,2017-12-10 21:15,Not ranked,POPPONESSET BAY, MASHPEE NECK RD, NEAR MASHPEE, MA011058837: Flow=17.6cfs,Stage=2.21ft,2017-12-10 21:15,Not ranked,QUASHNET RIVER AT WAQUOIT VILLAGE, MA011055566: Flow=175cfs,Stage=1.80ft,2017-12-10 21:45,Not ranked,NEPONSET RIVER AT MILTON VILLAGE, MA011055525: Not ranked,Seasonal site,PONKAPOAG BRK UPSTREAM RT 138,NR CANTON, MA01198125: Flow=404cfs,Stage=2.83ft,2017-12-10 21:15,Not ranked,HOUSATONIC RIVER NEAR ASHLEY FALLS, MA01176410: Stage=1.73ft,2017-12-10 21:30,Not ranked,CONANT BROOK RESERVOIR NEAR SOUTH MONSON, MA01174565: Flow=6.40cfs,Stage=1.32ft,2017-12-10 21:00,Not ranked,WEST BRANCH SWIFT RIVER NEAR SHUTESBURY, MA01172010: Flow=12400cfs,Stage=7.98ft,Floodstage=26.5ft,2017-12-10 21:30,Not ranked,CONNECTICUT R AT I-391 BRIDGE AT HOLYOKE, MA01168250: Flow=6.56cfs,Stage=7.09ft,2017-12-10 21:30,Not ranked,COLD RIVER AT FLORIDA, MA01165000: Flow=17.0cfs,1990-09-30 23:45,Not ranked,EAST BRANCH TULLY RIVER NEAR ATHOL, MA01113895: Flow=755cfs,Stage=1.41ft,2017-12-10 21:15,Not ranked,BLACKSTONE R AT ROOSEVELT ST AT PAWTUCKET RI01111230: Flow=357cfs,2009-08-13 23:45,Stage=1.01ft,2016-03-31 07:45:00,Not ranked,BLACKSTONE RIVER AT MILLVILLE, MA01111212: Flow=359cfs,Stage=8.03ft,2017-12-10 20:15,Not ranked,BLACKSTONE RIVER, RT 122 BRIDGE NEAR UXBRIDGE, MA01111200: Flow=4.20cfs,2001-09-30 23:45,Not ranked,WEST RIVER BELOW WEST HILL DAM, NR UXBRIDGE, MA01110500: Flow=525cfs,2017-12-06 22:30,Stage=3.39ft,2017-12-10 21:30:00,Floodstage=9ft,Not ranked,BLACKSTONE RIVER AT NORTHBRIDGE, MA01109730: Flow=106cfs,Stage=2.06ft,2017-12-10 22:00,Not ranked,BLACKSTONE RIVER, W. MAIN ST., AT MILLBURY, MA01108410: Flow=67.2cfs,Stage=3.91ft,Floodstage=8.5ft,2017-12-10 22:00,Not ranked,MILL RIVER AT SPRING STREET AT TAUNTON, MA01105933: Flow=53.1cfs,Stage=9.48ft,2017-12-10 21:15,Not ranked,PASKAMANSET RIVER NEAR SOUTH DARTMOUTH, MA01105917: Flow=34.4cfs,Stage=4.34ft,2017-12-10 21:30,Not ranked,MATTAPOISETT RIVER NEAR MATTAPOISETT, MA01105876: Flow=28.4cfs,Stage=4.78ft,2017-12-10 21:15,Not ranked,EEL RIVER AT RT 3A NEAR PLYMOUTH, MA01105638: Flow=8.95cfs,Stage=1.27ft,2017-12-10 21:30,Not ranked,WEIR RIVER AT LEAVITT STREET AT HINGHAM, MA01105608: Flow=3.97cfs,Stage=31.53ft,2017-12-10 21:45,Not ranked,WHITMANS POND FISH LADDER AT EAST WEYMOUTH, MA01105607: Flow=0.25cfs,2009-08-24 23:45,Stage=65.38ft,2017-12-10 22:00:00,Not ranked,WHITMANS POND FLOOD BY-PASS AT EAST WEYMOUTH, MA01105606: Flow=3.83cfs,Stage=72.48ft,2017-12-10 21:15,Not ranked,WHITMANS POND, WHITMANS POND DAM AT E. WEYMOUTH,MA01105584: Stage=16.72ft,2017-12-10 21:00,Not ranked,TOWN BROOK AT DIVERSION TUNNEL AT QUINCY, MA01105583: Flow=19.4cfs,Stage=1.64ft,2017-12-10 21:00,Not ranked,MONATIQUOT RIVER AT EAST BRAINTREE, MA01105554: Flow=96.8cfs,Stage=8.14ft,2017-12-10 21:30,Not ranked,NEPONSET RIVER AT GREENLODGE ST NEAR CANTON, MA01104715: Stage=107.57ft,2017-12-10 21:00,Not ranked,CHARLES RIVER, NEW CHARLES RIVER DAM AT BOSTON, MA01104705: Stage=107.56ft,2017-12-10 21:00,Not ranked,CHARLES RIVER AT FIRST ST AT CAMBRIDGE, MA01104683: Stage=8.48ft,2017-12-10 21:30,Not ranked,MUDDY RIVER AT BROOKLINE, MA01104501: Flow=6.43cfs,Stage=2.27ft,2017-12-10 22:00,Not ranked,BEAVER BROOK, LINDEN STREET, AT WALTHAM, MA01104480: Flow=12.7cfs,Stage=1.12ft,2017-12-10 21:00,Not ranked,STONY BROOK RESERVOIR AT DAM NEAR WALTHAM, MA01104475: Flow=0.58cfs,Stage=0.43ft,2017-12-10 21:30,Not ranked,STONY BROOK RES., UNNAMED TRIB 1, NEAR WESTON, MA01104460: Flow=11.9cfs,Stage=4.98ft,2017-12-10 21:00,Not ranked,STONY BROOK AT RT 20 AT WALTHAM, MA01104455: Flow=0.32cfs,Stage=3.17ft,2017-12-10 21:30,Not ranked,STONY BROOK, UNNAMED TRIBUTARY 1, NEAR WALTHAM, MA01104453: Flow=6.74cfs,2015-10-08 23:50,Stage=96.35ft,2016-05-17 11:20:00,Not ranked,STONY BROOK UNNAMED TRIB 2 NR WESTON STATION01104430: Flow=0.14cfs,Stage=-0.06ft,2017-12-10 21:45,Not ranked,HOBBS BK BELOW CAMBRIDGE RES NR KENDALL GREEN, MA01104425: Stage=175.92ft,2017-12-10 21:45,Not ranked,HOBBS BRK AT TRAPELO RD AT LINCOLN, MA01104420: Flow=1.14cfs,Stage=1.59ft,2017-12-10 21:30,Not ranked,CAMBRIDGE RES., UNNAMED TRIB 3, NR LEXINGTON, MA01104415: Flow=0.16cfs,Stage=0.68ft,2017-12-10 21:30,Not ranked,CAMBRIDGE RES., UNNAMED TRIB 2, NR LEXINGTON, MA01104410: Flow=0.06cfs,2015-10-06 23:50,Stage=0.64ft,2017-12-10 21:40:00,Not ranked,CAMBRIDGE RES., UNNAMED TRIB 1, NR LEXINGTON, MA01104405: Flow=0.13cfs,2015-10-08 23:50,Stage=0.96ft,2017-12-10 21:40:00,Not ranked,HOBBS BROOK AT MILL ST NR LINCOLN, MA01104370: Flow=7.02cfs,Stage=0.81ft,2017-12-10 21:40,Not ranked,STONY BROOK AT VILES STREET, NEAR WESTON, MA01103455: Flow=2.23cfs,Stage=1.50ft,2017-12-10 22:00,Not ranked,TROUT BROOK AT DOVER, MA01103280: Flow=66.0cfs,Stage=1.24ft,Floodstage=5ft,2017-12-10 21:45,Not ranked,CHARLES RIVER AT MEDWAY, MA01103050: Stage=105.37ft,2017-12-10 21:30,Not ranked,MYSTIC R AT AMELIA EARHART DAM NR SOMERVILLE, MA01103025: Flow=9.25cfs,Stage=1.69ft,2017-12-10 21:15,Not ranked,ALEWIFE BROOK NEAR ARLINGTON, MA01103010: Flow=29.6cfs,Stage=105.64ft,2017-12-10 21:15,Not ranked,MYSTIC RIVER AT ARLINGTON, MA01102345: Flow=8.71cfs,Stage=1.55ft,2017-12-10 21:00,Not ranked,SAUGUS RIVER AT SAUGUS IRONWORKS AT SAUGUS, MA01100870: Stage=-1.20ft,2017-12-10 22:00,Not ranked,MERRIMACK RIVER AT NEWBURYPORT, MA01100693: Stage=4.05ft,Floodstage=15ft,2017-12-10 21:15,Not ranked,MERRIMACK R 0.3 MILES U.S.RT 125 AT HAVERHILL,MA01100627: Flow=33.1cfs,Stage=24.50ft,Floodstage=29ft,2017-12-10 21:30,Not ranked,SHAWSHEEN RIVER AT BALMORAL STREET AT ANDOVER, MA01100600: Stage=2.65ft,2017-12-10 21:30:00,Floodstage=7ft,Not ranked,Back Water,SHAWSHEEN RIVER NEAR WILMINGTON, MA01100568: Flow=0.93cfs,Stage=0.81ft,Floodstage=6ft,2017-12-10 19:10,Not ranked,SHAWSHEEN RIVER AT HANSCOM FIELD NEAR BEDFORD, MA01100561: Flow=53.5cfs,Stage=3.90ft,Floodstage=8ft,2017-12-10 21:15,Not ranked,SPICKET RIVER NEAR METHUEN, MA01100505: Flow=15.3cfs,Stage=3.07ft,2017-12-10 21:30,Not ranked,SPICKET RIVER AT NORTH SALEM, NH01100500: Stage=11.56ft,Floodstage=24ft,2017-12-10 21:30,Not ranked,MERRIMACK RIVER AT LAWRENCE, MA01098500: Flow=16.1cfs,Stage=4.37ft,2017-12-10 21:00,Not ranked,COCHITUATE BK BL LAKE COCHITUATE AT FRAMINGHAM, MA01098499: Stage=8.30ft,2017-12-10 21:00,Not ranked,LAKE COCHITUATE AT FRAMINGHAM, MA01095503: Flow=9.82cfs,Stage=0.95ft,2017-12-10 22:00,Not ranked,NASHUA RIVER, WATER STREET BRIDGE, AT CLINTON, MA01095434: Stage=1.11ft,2017-12-10 21:20:00,Not ranked,Maintenance in progress,GATES BROOK NEAR WEST BOYLSTON, MA01095375: Flow=24.6cfs,Stage=6.76ft,2017-12-10 21:30,Not ranked,QUINAPOXET RIVER AT CANADA MILLS NEAR HOLDEN, MA01095220: Flow=39.6cfs,Stage=4.72ft,2017-12-10 21:30,Not ranked,STILLWATER RIVER NEAR STERLING, MAGo to WaterWatch (offsite) for a larger map with additional options
Explanation
[color code for] High
[color code for] > 90th percentile
[color code for] 76th - 90th percentile
[color code for] 25th - 75th percentile
[color code for] 10th - 24th percentile
[color code for] < 10th percentile
[color code for] Low
[color code for] Not ranked
The colored dots on this map depict streamflow conditions as a percentile, which is computed from the period of record for the current day of the year. Only stations with at least 30 years of record are used.
The gray circles indicate other stations that were not ranked in percentiles either because they have fewer than 30 years of record or because they report parameters other than streamflow. Some stations, for example, measure stage only.

Statewide Streamflow Table


Current data typically are recorded at 15- to 60-minute intervals, stored onsite, and then transmitted to USGS offices every 1 to 4 hours, depending on the data relay technique used. Recording and transmission times may be more frequent during critical events. Data from current sites are relayed to USGS offices via satellite, telephone, and/or radio telemetry and are available for viewing within minutes of arrival.

All real-time data are provisional and subject to revision.

Build Current Conditions Table Show a custom current conditions summary table for one or more stations.
Build Time Series Show custom graphs or tables for a series of recent data for one or more stations.