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USGS Current Water Data for Massachusetts





Daily Streamflow Conditions

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Stream gage levels in Massachusetts, relative to 30 year average. 01105600: Flow=2.08cfs,Stage=2.62ft,2017-12-16 14:00,Low,OLD SWAMP RIVER NEAR SOUTH WEYMOUTH, MA01198000: Flow=22.3cfs,Stage=0.58ft,2017-12-16 14:30,<10,GREEN RIVER NEAR GREAT BARRINGTON, MA01170500: Flow=4180cfs,Stage=7.65ft,Floodstage=28ft,2017-12-16 14:30,<10,CONNECTICUT RIVER AT MONTAGUE CITY, MA01105730: Flow=23.1cfs,Stage=1.79ft,2017-12-16 14:30,<10,INDIAN HEAD RIVER AT HANOVER, MA01105585: Flow=1.00cfs,Stage=1.70ft,2017-12-16 14:15,<10,TOWN BROOK AT QUINCY, MA01170100: Flow=143cfs,Stage=3.73ft,2017-12-16 14:15,76-90,GREEN RIVER NEAR COLRAIN, MA01105880: Flow=11.1cfs,Stage=2.29ft,2017-12-16 14:45,76-90,HERRING RIVER AT NORTH HARWICH, MA01332500: Flow=135cfs,Stage=5.50ft,Floodstage=9ft,2017-12-16 14:00,10-24,HOOSIC RIVER NEAR WILLIAMSTOWN, MA01331500: Flow=43.2cfs,Stage=5.87ft,2017-12-16 14:45,10-24,HOOSIC RIVER AT ADAMS, MA01199000: Flow=429cfs,Stage=2.44ft,Floodstage=7ft,2017-12-16 14:15,10-24,HOUSATONIC RIVER AT FALLS VILLAGE, CT01197500: Flow=222cfs,Stage=2.18ft,Floodstage=9ft,2017-12-16 14:30,10-24,HOUSATONIC RIVER NEAR GREAT BARRINGTON, MA01184100: Flow=6.57cfs,Stage=1.45ft,2017-12-16 15:00,10-24,STONY BROOK NEAR WEST SUFFIELD, CT01183500: Flow=314cfs,Stage=3.70ft,Floodstage=13ft,2017-12-16 14:30,10-24,WESTFIELD RIVER NEAR WESTFIELD, MA01181000: Flow=59.0cfs,Stage=3.53ft,2017-12-16 14:30,10-24,WEST BRANCH WESTFIELD RIVER AT HUNTINGTON, MA01171500: Flow=32.9cfs,Stage=5.81ft,Floodstage=11ft,2017-12-16 14:15,10-24,MILL RIVER AT NORTHAMPTON, MA01114000: Flow=14.7cfs,Stage=1.54ft,2017-12-16 14:45,10-24,MOSHASSUCK RIVER AT PROVIDENCE, RI01109403: Flow=52.1cfs,Stage=2.54ft,2017-12-16 14:15,10-24,TEN MILE R., PAWTUCKET AVE. AT E. PROVIDENCE, RI01109070: Flow=11.2cfs,Stage=2.10ft,2017-12-16 14:45,10-24,SEGREGANSET RIVER NEAR DIGHTON, MA01109000: Flow=28.2cfs,Stage=5.59ft,Floodstage=9.5ft,2017-12-16 14:15,10-24,WADING RIVER NEAR NORTON, MA01108000: Flow=270cfs,Stage=3.98ft,Floodstage=8ft,2017-12-16 14:45,10-24,TAUNTON RIVER NEAR BRIDGEWATER, MA01105870: Flow=14.5cfs,Stage=2.84ft,2017-12-16 14:15,10-24,JONES RIVER AT KINGSTON, MA01105000: Flow=18.9cfs,Stage=5.87ft,Floodstage=9ft,2017-12-16 14:15,10-24,NEPONSET RIVER AT NORWOOD, MA01104200: Flow=126cfs,Stage=3.15ft,2017-12-16 14:15,10-24,CHARLES RIVER AT WELLESLEY, MA01101500: Flow=17.0cfs,Stage=2.45ft,2017-12-16 14:30,10-24,IPSWICH RIVER AT SOUTH MIDDLETON, MA01101000: Flow=14.4cfs,Stage=1.76ft,2017-12-16 14:30,10-24,PARKER RIVER AT BYFIELD, MA01097300: Flow=7.09cfs,Stage=3.69ft,2017-12-16 14:45,10-24,NASHOBA BROOK NEAR ACTON, MA01096500: Flow=242cfs,Stage=1.86ft,Floodstage=8ft,2017-12-16 14:30,10-24,NASHUA RIVER AT EAST PEPPERELL, MA010965852: Flow=30.8cfs,Stage=6.12ft,2017-12-16 14:15,25-75,BEAVER BROOK AT NORTH PELHAM, NH01197000: Flow=49.1cfs,Stage=0.95ft,Floodstage=5ft,2017-12-16 14:30,25-75,EAST BRANCH HOUSATONIC RIVER AT COLTSVILLE, MA01186500: Flow=155cfs,Stage=2.48ft,2017-12-16 14:30,25-75,STILL RIVER AT ROBERTSVILLE, CT01186000: Flow=172cfs,Stage=3.81ft,2017-12-16 14:30,25-75,WEST BRANCH FARMINGTON RIVER AT RIVERTON, CT01185500: Flow=124cfs,Stage=3.20ft,Floodstage=8ft,2017-12-16 14:30,25-75,WEST BRANCH FARMINGTON RIVER NEAR NEW BOSTON, MA01184000: Flow=10800cfs,Stage=8.75ft,Floodstage=15ft,2017-12-16 14:30,25-75,CONNECTICUT RIVER AT THOMPSONVILLE, CT01179500: Flow=122cfs,Stage=2.94ft,2017-12-16 14:30,25-75,WESTFIELD RIVER AT KNIGHTVILLE, MA01177000: Flow=481cfs,Stage=4.63ft,Floodstage=12ft,2017-12-16 14:30,25-75,CHICOPEE RIVER AT INDIAN ORCHARD, MA01176000: Flow=335cfs,Stage=4.02ft,2017-12-16 14:15,25-75,QUABOAG RIVER AT WEST BRIMFIELD, MA01175670: Flow=7.11cfs,Stage=9.47ft,2017-12-16 14:30,25-75,SEVENMILE RIVER NEAR SPENCER, MA01175500: Flow=49.6cfs,Stage=2.14ft,2017-12-16 14:15,25-75,SWIFT RIVER AT WEST WARE, MA01174500: Flow=71.6cfs,Stage=19.58ft,2017-12-16 14:30,25-75,EAST BRANCH SWIFT RIVER NEAR HARDWICK, MA01173500: Flow=348cfs,Stage=2.87ft,2017-12-16 14:30,25-75,WARE RIVER AT GIBBS CROSSING, MA01173000: Flow=106cfs,Stage=4.11ft,2017-12-16 14:15,25-75,WARE RIVER AT INTAKE WORKS NEAR BARRE, MA01172500: Flow=68.2cfs,Stage=3.18ft,2017-12-16 14:30,25-75,WARE RIVER NEAR BARRE, MA01170000: Flow=1060cfs,Stage=3.02ft,2017-12-16 14:30,25-75,DEERFIELD RIVER NEAR WEST DEERFIELD, MA01169900: Flow=51.2cfs,Stage=2.23ft,2017-12-16 14:00,25-75,SOUTH RIVER NEAR CONWAY, MA01169000: Flow=96.4cfs,Stage=2.21ft,Floodstage=9ft,2017-12-16 14:30,25-75,NORTH RIVER AT SHATTUCKVILLE, MA01168500: Flow=887cfs,Stage=3.06ft,2017-12-16 14:30,25-75,DEERFIELD RIVER AT CHARLEMONT, MA01166500: Flow=580cfs,Stage=2.97ft,2017-12-16 14:00,25-75,MILLERS RIVER AT ERVING, MA01162500: Flow=19.2cfs,Stage=2.76ft,2017-12-16 14:45,25-75,PRIEST BROOK NEAR WINCHENDON, MA01162000: Flow=110cfs,Stage=4.46ft,2017-12-16 14:00,25-75,MILLERS RIVER NEAR WINCHENDON, MA01123600: Flow=106cfs,Stage=3.94ft,2017-12-16 14:30,25-75,QUINEBAUG R BL WESTVILLE DAM NR SOUTHBRIDGE, MA01123360: Flow=71.9cfs,Stage=3.02ft,2017-12-16 14:30,25-75,QUINEBAUG R BL E BRIMFIELD DAM AT FISKDALE, MA01116500: Flow=240cfs,Stage=4.21ft,Floodstage=9ft,2017-12-16 14:45,25-75,PAWTUXET RIVER AT CRANSTON, RI01114500: Flow=56.0cfs,Stage=2.35ft,Floodstage=5.5ft,2017-12-16 14:45,25-75,WOONASQUATUCKET RIVER AT CENTERDALE, RI01112500: Flow=484cfs,Stage=2.20ft,Floodstage=9ft,2017-12-16 14:30,25-75,BLACKSTONE RIVER AT WOONSOCKET, RI01111500: Flow=132cfs,Stage=2.75ft,2017-12-16 14:15,25-75,BRANCH RIVER AT FORESTDALE, RI01111300: Flow=18.4cfs,Stage=3.46ft,2017-12-16 14:15,25-75,NIPMUC RIVER NEAR HARRISVILLE, RI01110000: Flow=24.0cfs,Stage=1.40ft,2017-12-16 15:00,25-75,QUINSIGAMOND RIVER AT NORTH GRAFTON, MA01109060: Flow=93.3cfs,Stage=2.94ft,2017-12-16 14:15,25-75,THREEMILE RIVER AT NORTH DIGHTON, MA01105500: Flow=32.3cfs,Stage=1.22ft,2017-12-16 14:15,25-75,EAST BRANCH NEPONSET RIVER AT CANTON, MA01104500: Flow=169cfs,Stage=1.46ft,Floodstage=5ft,2017-12-16 14:30,25-75,CHARLES RIVER AT WALTHAM, MA01104000: Flow=31.6cfs,Stage=80.72ft,2017-12-16 14:15,25-75,MOTHER BROOK AT DEDHAM, MA01103500: Flow=161cfs,Stage=1.14ft,Floodstage=5ft,2017-12-16 14:45,25-75,CHARLES RIVER AT DOVER, MA01102500: Flow=18.1cfs,Stage=7.54ft,2017-12-16 14:00,25-75,ABERJONA RIVER AT WINCHESTER, MA01102000: Flow=63.4cfs,Stage=3.32ft,Floodstage=7ft,2017-12-16 15:00,25-75,IPSWICH RIVER NEAR IPSWICH, MA01100000: Flow=4860cfs,Stage=43.15ft,Floodstage=52ft,2017-12-16 14:30,25-75,MERRIMACK RIVER BL CONCORD RIVER AT LOWELL, MA01099500: Flow=391cfs,Stage=4.92ft,Floodstage=8ft,2017-12-16 14:30,25-75,CONCORD R BELOW R MEADOW BROOK, AT LOWELL, MA01098530: Flow=110cfs,Stage=5.27ft,Floodstage=10ft,2017-12-16 14:15,25-75,SUDBURY RIVER AT SAXONVILLE, MA01097000: Flow=104cfs,Stage=2.07ft,Floodstage=5ft,2017-12-16 14:15,25-75,ASSABET RIVER AT MAYNARD, MA01096000: Flow=65.0cfs,Stage=2.21ft,Floodstage=7ft,2017-12-16 14:00,25-75,SQUANNACOOK RIVER NEAR WEST GROTON, MA01094500: Flow=118cfs,Stage=2.32ft,2017-12-16 14:15,25-75,NORTH NASHUA RIVER NEAR LEOMINSTER, MA01094400: Flow=72.4cfs,Stage=2.72ft,Floodstage=6.5ft,2017-12-16 14:30,25-75,NORTH NASHUA RIVER AT FITCHBURG, MA422302071083801: Stage=16.10ft,2017-12-16 14:45,Not ranked,FRESH POND IN GATE HOUSE AT CAMBRIDGE, MA420259070105600: Stage=-3.04ft,2017-12-16 14:30,Not ranked,PROVINCETOWN TIDE GAGE, PROVINCETOWN, MA414507070091400: Stage=-4.45ft,2017-12-16 15:00,Not ranked,SESUIT HARBOR TIDE GAGE AT DENNIS, MA413758070320501: Stage=44.15ft,2017-12-16 14:15,Not ranked,ASHUMET POND NEAR FALMOUTH, MA413601070275800: Stage=-0.56ft,2017-12-16 14:15,Not ranked,POPPONESSET BAY, MASHPEE NECK RD, NEAR MASHPEE, MA011058837: Flow=15.3cfs,Stage=2.11ft,2017-12-16 14:15,Not ranked,QUASHNET RIVER AT WAQUOIT VILLAGE, MA011055566: Flow=129cfs,Stage=1.60ft,2017-12-16 14:45,Not ranked,NEPONSET RIVER AT MILTON VILLAGE, MA011055525: Not ranked,Seasonal site,PONKAPOAG BRK UPSTREAM RT 138,NR CANTON, MA01333000: Stage=1.93ft,2017-12-16 14:15:00,Not ranked,Ice affected,GREEN RIVER AT WILLIAMSTOWN, MA01198125: Flow=328cfs,Stage=2.54ft,2017-12-16 14:15,Not ranked,HOUSATONIC RIVER NEAR ASHLEY FALLS, MA01176410: Stage=1.62ft,2017-12-16 14:30,Not ranked,CONANT BROOK RESERVOIR NEAR SOUTH MONSON, MA01174565: Flow=6.49cfs,Stage=1.31ft,2017-12-16 14:00,Not ranked,WEST BRANCH SWIFT RIVER NEAR SHUTESBURY, MA01172010: Flow=9920cfs,Stage=7.14ft,Floodstage=26.5ft,2017-12-16 14:30,Not ranked,CONNECTICUT R AT I-391 BRIDGE AT HOLYOKE, MA01168250: Stage=7.06ft,2017-12-16 14:30:00,Not ranked,Ice affected,COLD RIVER AT FLORIDA, MA01165000: Flow=17.0cfs,1990-09-30 23:45,Not ranked,EAST BRANCH TULLY RIVER NEAR ATHOL, MA01163200: Stage=1.04ft,2017-12-16 14:15:00,Not ranked,Ice affected,OTTER RIVER AT OTTER RIVER, MA01161000: Stage=4.22ft,2017-12-16 14:45:00,Not ranked,Ice affected,ASHUELOT RIVER AT HINSDALE, NH01124000: Stage=2.93ft,2017-12-16 15:00:00,Not ranked,Ice affected,QUINEBAUG RIVER AT QUINEBAUG, CT01113895: Flow=581cfs,Stage=1.24ft,2017-12-16 14:15,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=301cfs,Stage=7.83ft,2017-12-16 13:15,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=3.19ft,2017-12-16 14:30:00,Floodstage=9ft,Not ranked,BLACKSTONE RIVER AT NORTHBRIDGE, MA01109730: Flow=96.0cfs,Stage=2.00ft,2017-12-16 15:00,Not ranked,BLACKSTONE RIVER, W. MAIN ST., AT MILLBURY, MA01108410: Flow=59.5cfs,Stage=3.82ft,Floodstage=8.5ft,2017-12-16 15:00,Not ranked,MILL RIVER AT SPRING STREET AT TAUNTON, MA01105933: Flow=64.0cfs,Stage=9.69ft,2017-12-16 14:15,Not ranked,PASKAMANSET RIVER NEAR SOUTH DARTMOUTH, MA01105917: Flow=27.9cfs,Stage=4.22ft,2017-12-16 14:30,Not ranked,MATTAPOISETT RIVER NEAR MATTAPOISETT, MA01105876: Flow=24.6cfs,Stage=4.71ft,2017-12-16 14:15,Not ranked,EEL RIVER AT RT 3A NEAR PLYMOUTH, MA01105638: Flow=4.99cfs,Stage=1.05ft,2017-12-16 14:30,Not ranked,WEIR RIVER AT LEAVITT STREET AT HINGHAM, MA01105608: Flow=3.32cfs,Stage=31.50ft,2017-12-16 14:45,Not ranked,WHITMANS POND FISH LADDER AT EAST WEYMOUTH, MA01105607: Flow=0.25cfs,2009-08-24 23:45,Stage=65.37ft,2017-12-16 15:00:00,Not ranked,WHITMANS POND FLOOD BY-PASS AT EAST WEYMOUTH, MA01105606: Flow=2.77cfs,Stage=72.36ft,2017-12-16 14:15,Not ranked,WHITMANS POND, WHITMANS POND DAM AT E. WEYMOUTH,MA01105584: Stage=16.47ft,2017-12-16 14:00,Not ranked,TOWN BROOK AT DIVERSION TUNNEL AT QUINCY, MA01105583: Flow=16.4cfs,Stage=1.56ft,2017-12-16 14:00,Not ranked,MONATIQUOT RIVER AT EAST BRAINTREE, MA01105554: Flow=72.1cfs,Stage=7.76ft,2017-12-16 14:30,Not ranked,NEPONSET RIVER AT GREENLODGE ST NEAR CANTON, MA01104715: Stage=107.66ft,2017-12-16 14:00,Not ranked,CHARLES RIVER, NEW CHARLES RIVER DAM AT BOSTON, MA01104705: Stage=107.64ft,2017-12-16 14:00,Not ranked,CHARLES RIVER AT FIRST ST AT CAMBRIDGE, MA01104683: Stage=7.97ft,2017-12-16 14:30,Not ranked,MUDDY RIVER AT BROOKLINE, MA01104501: Flow=4.29cfs,Stage=2.16ft,2017-12-16 15:00,Not ranked,BEAVER BROOK, LINDEN STREET, AT WALTHAM, MA01104480: Flow=11.9cfs,Stage=1.11ft,2017-12-16 14:00,Not ranked,STONY BROOK RESERVOIR AT DAM NEAR WALTHAM, MA01104475: Flow=0.49cfs,Stage=0.41ft,2017-12-16 14:30,Not ranked,STONY BROOK RES., UNNAMED TRIB 1, NEAR WESTON, MA01104460: Flow=7.66cfs,Stage=4.82ft,2017-12-16 14:00,Not ranked,STONY BROOK AT RT 20 AT WALTHAM, MA01104455: Flow=0.28cfs,Stage=3.15ft,2017-12-16 14:30,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,2017-12-16 14:30,Not ranked,HOBBS BK BELOW CAMBRIDGE RES NR KENDALL GREEN, MA01104425: Stage=176.02ft,2017-12-16 14:45,Not ranked,HOBBS BRK AT TRAPELO RD AT LINCOLN, MA01104420: Flow=0.58cfs,Stage=1.44ft,2017-12-16 14:30,Not ranked,CAMBRIDGE RES., UNNAMED TRIB 3, NR LEXINGTON, MA01104415: Flow=0.13cfs,Stage=0.65ft,2017-12-16 14:30,Not ranked,CAMBRIDGE RES., UNNAMED TRIB 2, NR LEXINGTON, MA01104410: Flow=0.06cfs,2015-10-06 23:50,Stage=0.61ft,2017-12-16 14:40:00,Not ranked,CAMBRIDGE RES., UNNAMED TRIB 1, NR LEXINGTON, MA01104405: Flow=0.13cfs,2015-10-08 23:50,Stage=0.88ft,2017-12-16 14:40:00,Not ranked,HOBBS BROOK AT MILL ST NR LINCOLN, MA01104370: Flow=4.72cfs,Stage=0.70ft,2017-12-16 14:40,Not ranked,STONY BROOK AT VILES STREET, NEAR WESTON, MA01103455: Flow=1.53cfs,Stage=1.43ft,2017-12-16 15:00,Not ranked,TROUT BROOK AT DOVER, MA01103280: Flow=44.0cfs,Stage=1.10ft,Floodstage=5ft,2017-12-16 14:45,Not ranked,CHARLES RIVER AT MEDWAY, MA01103050: Stage=105.31ft,2017-12-16 14:30,Not ranked,MYSTIC R AT AMELIA EARHART DAM NR SOMERVILLE, MA01103025: Flow=5.45cfs,Stage=1.60ft,2017-12-16 14:15,Not ranked,ALEWIFE BROOK NEAR ARLINGTON, MA01103010: Flow=20.5cfs,Stage=105.51ft,2017-12-16 14:15,Not ranked,MYSTIC RIVER AT ARLINGTON, MA01102345: Flow=6.81cfs,Stage=1.44ft,2017-12-16 14:00,Not ranked,SAUGUS RIVER AT SAUGUS IRONWORKS AT SAUGUS, MA01100870: Stage=-1.29ft,2017-12-16 15:00,Not ranked,MERRIMACK RIVER AT NEWBURYPORT, MA01100693: Stage=3.69ft,Floodstage=15ft,2017-12-16 14:15,Not ranked,MERRIMACK R 0.3 MILES U.S.RT 125 AT HAVERHILL,MA01100627: Flow=25.3cfs,Stage=24.33ft,Floodstage=29ft,2017-12-16 14:30,Not ranked,SHAWSHEEN RIVER AT BALMORAL STREET AT ANDOVER, MA01100600: Flow=42.0cfs,Stage=2.62ft,Floodstage=7ft,2017-12-15 05:30,Not ranked,SHAWSHEEN RIVER NEAR WILMINGTON, MA01100568: Flow=0.85cfs,Stage=0.80ft,Floodstage=6ft,2017-12-16 13:10,Not ranked,SHAWSHEEN RIVER AT HANSCOM FIELD NEAR BEDFORD, MA01100561: Flow=46.4cfs,Stage=3.70ft,Floodstage=8ft,2017-12-16 14:15,Not ranked,SPICKET RIVER NEAR METHUEN, MA01100505: Stage=2.99ft,2017-12-16 13:30:00,Not ranked,Ice affected,SPICKET RIVER AT NORTH SALEM, NH01100500: Stage=10.56ft,Floodstage=24ft,2017-12-16 14:30,Not ranked,MERRIMACK RIVER AT LAWRENCE, MA01098500: Flow=9.81cfs,Stage=4.19ft,2017-12-16 14:00,Not ranked,COCHITUATE BK BL LAKE COCHITUATE AT FRAMINGHAM, MA01098499: Stage=8.25ft,2017-12-16 14:00,Not ranked,LAKE COCHITUATE AT FRAMINGHAM, MA01095503: Flow=9.82cfs,Stage=0.95ft,2017-12-16 15:00,Not ranked,NASHUA RIVER, WATER STREET BRIDGE, AT CLINTON, MA01095434: Stage=1.07ft,2017-12-16 14:20:00,Not ranked,Maintenance in progress,GATES BROOK NEAR WEST BOYLSTON, MA01095375: Flow=22.0cfs,Stage=6.71ft,2017-12-16 14:30,Not ranked,QUINAPOXET RIVER AT CANADA MILLS NEAR HOLDEN, MA01095220: Flow=29.7cfs,Stage=4.59ft,2017-12-16 14:30,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.

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