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USGS Current Water Data for Massachusetts

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ICE EFFECTS ON STREAMFLOW

The formation of ice on rivers can cause discharge values to appear unusually high. Display of these erroneous discharge data may result in improper assessment of flow conditions and misuse of the data. For this reason, display of discharge values for streams significantly affected by ice may be disabled from view. Display of discharge data will resume when ice conditions are no longer present. Discharge values for streams minimally affected by ice will continue to be displayed. Flows for streams with these conditions appear to increase during the night and decrease to near-base-line conditions around midday. To estimate the correct discharge for these streams, use the flow rate that corresponds to the bottom of the discharge curve, rather than the peak that corresponds to the top of the curve. Note that this method of estimation is possible only when no surface runoff is occurring. Daily mean discharges for periods of both significant and minimal ice-effect will be estimated and published in the Annual Water-Data Report for the water year in which they occurred.


Daily Streamflow Conditions

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Stream gage levels in Massachusetts, relative to 30 year average. 010965852: Flow=4.19cfs,Stage=5.56ft,2024-11-20 23:15,Low,BEAVER BROOK AT NORTH PELHAM, NH01333000: Flow=6.87cfs,Stage=1.28ft,2024-11-20 23:15,Low,GREEN RIVER AT WILLIAMSTOWN, MA01332500: Flow=47.3cfs,Stage=5.26ft,Floodstage=9ft,2024-11-20 23:00,Low,HOOSIC RIVER NEAR WILLIAMSTOWN, MA01186500: Flow=15.4cfs,Stage=1.45ft,2024-11-20 23:30,Low,STILL RIVER AT ROBERTSVILLE, CT01181000: Flow=18.9cfs,Stage=3.03ft,Floodstage=9ft,2024-11-20 23:30,Low,WEST BRANCH WESTFIELD RIVER AT HUNTINGTON, MA01175670: Flow=0.30cfs,Stage=9.17ft,2024-11-20 23:30,Low,SEVENMILE RIVER NEAR SPENCER, MA01174500: Flow=2.77cfs,Stage=19.31ft,2024-11-20 23:30,Low,EAST BRANCH SWIFT RIVER NEAR HARDWICK, MA01170100: Flow=8.40cfs,Stage=2.44ft,Floodstage=7ft,2024-11-20 23:00,Low,GREEN RIVER NEAR COLRAIN, MA01163200: Flow=9.60cfs,Stage=0.52ft,2024-11-20 23:15,Low,OTTER RIVER AT OTTER RIVER, MA01111300: Flow=0.68cfs,Stage=2.99ft,2024-11-20 23:00,Low,NIPMUC RIVER NEAR HARRISVILLE, RI01109403: Flow=23.3cfs,Stage=2.08ft,2024-11-20 23:15,Low,TEN MILE R., PAWTUCKET AVE. AT E. PROVIDENCE, RI01109060: Flow=14.7cfs,Stage=2.18ft,2024-11-20 23:15,Low,THREEMILE RIVER AT NORTH DIGHTON, MA01109000: Flow=3.28cfs,Stage=5.00ft,Floodstage=9.5ft,2024-11-20 23:15,Low,WADING RIVER NEAR NORTON, MA01105730: Flow=7.98cfs,Stage=1.29ft,2024-11-20 23:30,Low,INDIAN HEAD RIVER AT HANOVER, MA01105500: Flow=6.17cfs,Stage=0.52ft,2024-11-20 23:10,Low,EAST BRANCH NEPONSET RIVER AT CANTON, MA01103500: Flow=25.3cfs,Stage=0.60ft,Floodstage=5ft,2024-11-20 22:45,Low,CHARLES RIVER AT DOVER, MA01102345: Flow=1.95cfs,Stage=1.02ft,2024-11-20 21:00,Low,SAUGUS RIVER AT SAUGUS IRONWORKS AT SAUGUS, MA01102000: Flow=2.99cfs,Stage=2.38ft,Floodstage=7ft,2024-11-20 23:00,Low,IPSWICH RIVER NEAR IPSWICH, MA01098530: Flow=7.04cfs,Stage=4.05ft,Floodstage=10ft,2024-11-20 23:15,Low,SUDBURY RIVER AT SAXONVILLE, MA01096000: Flow=10.5cfs,Stage=1.37ft,Floodstage=7ft,2024-11-20 23:00,Low,SQUANNACOOK RIVER NEAR WEST GROTON, MA01095220: Flow=1.44cfs,Stage=3.81ft,2024-11-20 23:30,Low,STILLWATER RIVER NEAR STERLING, MA01094400: Flow=7.89cfs,Stage=2.05ft,Floodstage=6.5ft,2024-11-20 23:30,Low,NORTH NASHUA RIVER AT FITCHBURG, MA01175500: Flow=131cfs,Stage=2.84ft,2024-11-20 23:15,>90,SWIFT RIVER AT WEST WARE, MA01199000: Flow=227cfs,Stage=2.00ft,Floodstage=7ft,2024-11-20 23:15,<10,HOUSATONIC RIVER AT FALLS VILLAGE, CT01166500: Flow=142cfs,Stage=1.97ft,2024-11-20 23:00,<10,MILLERS RIVER AT ERVING, MA01162000: Flow=26.2cfs,Stage=3.99ft,2024-11-20 23:00,<10,MILLERS RIVER NEAR WINCHENDON, MA01161000: Flow=104cfs,Stage=3.22ft,Floodstage=8ft,2024-11-20 23:45,<10,ASHUELOT RIVER AT HINSDALE, NH01114500: Flow=15.8cfs,Stage=2.06ft,Floodstage=5.5ft,2024-11-20 23:45,<10,WOONASQUATUCKET RIVER AT CENTERDALE, RI01112500: Flow=179cfs,Stage=0.99ft,Floodstage=9ft,2024-11-20 23:30,<10,BLACKSTONE RIVER AT WOONSOCKET, RI01108000: Flow=67.3cfs,Stage=3.12ft,Floodstage=8ft,2024-11-20 22:45,<10,TAUNTON RIVER NEAR BRIDGEWATER, MA01105600: Flow=2.19cfs,Stage=2.63ft,2024-11-20 23:00,<10,OLD SWAMP RIVER NEAR SOUTH WEYMOUTH, MA01101500: Flow=2.38cfs,Stage=1.92ft,2024-11-20 23:30,<10,IPSWICH RIVER AT SOUTH MIDDLETON, MA01097300: Flow=3.40cfs,Stage=3.30ft,2024-11-20 22:45,<10,NASHOBA BROOK NEAR ACTON, MA01096500: Flow=90.0cfs,Stage=0.87ft,Floodstage=8ft,2024-11-20 23:30,<10,NASHUA RIVER AT EAST PEPPERELL, MA01331500: Flow=18.2cfs,Stage=5.68ft,2024-11-20 22:45,<10,HOOSIC RIVER AT ADAMS, MA01198000: Flow=6.89cfs,Stage=0.44ft,2024-11-20 23:30,<10,GREEN RIVER NEAR GREAT BARRINGTON, MA01197500: Flow=111cfs,Stage=1.83ft,Floodstage=9ft,2024-11-20 23:30,<10,HOUSATONIC RIVER NEAR GREAT BARRINGTON, MA01184100: Flow=1.81cfs,Stage=1.34ft,2024-11-20 23:00,<10,STONY BROOK NEAR WEST SUFFIELD, CT01183500: Flow=178cfs,Stage=3.31ft,Floodstage=13ft,2024-11-20 23:30,<10,WESTFIELD RIVER NEAR WESTFIELD, MA01179500: Flow=42.0cfs,Stage=2.64ft,2024-11-20 23:30,<10,WESTFIELD RIVER AT KNIGHTVILLE, MA01174565: Flow=2.67cfs,Stage=1.14ft,2024-11-20 23:00,<10,WEST BRANCH SWIFT RIVER NEAR SHUTESBURY, MA01173500: Flow=33.0cfs,Stage=2.01ft,2024-11-20 23:30,<10,WARE RIVER AT GIBBS CROSSING, MA01173000: Flow=15.3cfs,Stage=3.12ft,2024-11-20 23:15,<10,WARE RIVER AT INTAKE WORKS NEAR BARRE, MA01172500: Flow=6.72cfs,Stage=2.39ft,2024-11-20 22:45,<10,WARE RIVER NEAR BARRE, MA01170500: Flow=1760cfs,Stage=6.18ft,Floodstage=28ft,2024-11-20 23:30,<10,CONNECTICUT RIVER AT MONTAGUE CITY, MA01170000: Flow=214cfs,Stage=2.06ft,Floodstage=9ft,2024-11-20 23:30,<10,DEERFIELD RIVER NEAR WEST DEERFIELD, MA01169900: Flow=7.80cfs,Stage=1.44ft,2024-11-20 23:00,<10,SOUTH RIVER NEAR CONWAY, MA01169000: Flow=18.9cfs,Stage=1.13ft,Floodstage=9ft,2024-11-20 23:30,<10,NORTH RIVER AT SHATTUCKVILLE, MA01168500: Flow=158cfs,Stage=1.85ft,Floodstage=10ft,2024-11-20 23:30,<10,DEERFIELD RIVER AT CHARLEMONT, MA01162500: Flow=2.13cfs,Stage=2.31ft,2024-11-20 22:45,<10,PRIEST BROOK NEAR WINCHENDON, MA01116500: Flow=78.8cfs,Stage=3.76ft,Floodstage=9ft,2024-11-20 22:45,<10,PAWTUXET RIVER AT CRANSTON, RI01114000: Flow=6.42cfs,Stage=1.32ft,2024-11-20 23:45,<10,MOSHASSUCK RIVER AT PROVIDENCE, RI01111500: Flow=25.8cfs,Stage=1.92ft,Floodstage=10ft,2024-11-20 23:15,<10,BRANCH RIVER AT FORESTDALE, RI01109070: Flow=0.82cfs,Stage=1.78ft,Floodstage=5ft,2024-11-20 22:45,<10,SEGREGANSET RIVER NEAR DIGHTON, MA01105870: Flow=8.68cfs,Stage=2.97ft,2024-11-20 23:15,<10,JONES RIVER AT KINGSTON, MA01105000: Flow=4.54cfs,Stage=5.52ft,Floodstage=9ft,2024-11-20 23:00,<10,NEPONSET RIVER AT NORWOOD, MA01104500: Flow=31.8cfs,Stage=0.76ft,Floodstage=5ft,2024-11-20 23:30,<10,CHARLES RIVER AT WALTHAM, MA01104200: Flow=24.3cfs,Stage=2.76ft,2024-11-20 23:35,<10,CHARLES RIVER AT WELLESLEY, MA01101000: Flow=1.16cfs,Stage=1.27ft,2024-11-20 23:30,<10,PARKER RIVER AT BYFIELD, MA01100000: Flow=1520cfs,Stage=41.81ft,Floodstage=52ft,2024-11-20 23:30,<10,MERRIMACK RIVER BL CONCORD RIVER AT LOWELL, MA01099500: Flow=77.9cfs,Stage=3.96ft,Floodstage=8ft,2024-11-20 23:30,<10,CONCORD R BELOW R MEADOW BROOK, AT LOWELL, MA01094500: Flow=34.9cfs,Stage=1.93ft,2024-11-20 23:15,<10,NORTH NASHUA RIVER NEAR LEOMINSTER, MA01197000: Flow=28.9cfs,Stage=0.75ft,Floodstage=5ft,2024-11-20 23:30,10-24,EAST BRANCH HOUSATONIC RIVER AT COLTSVILLE, MA01187300: Flow=7.32cfs,Stage=0.52ft,2024-11-20 23:30,10-24,HUBBARD RIVER NEAR WEST HARTLAND, CT01186000: Flow=125cfs,Stage=3.69ft,2024-11-20 23:30,10-24,WEST BRANCH FARMINGTON RIVER AT RIVERTON, CT01185500: Flow=76.2cfs,Stage=2.92ft,Floodstage=8ft,2024-11-20 23:30,10-24,WEST BRANCH FARMINGTON RIVER NEAR NEW BOSTON, MA01184000: Flow=5880cfs,Stage=8.16ft,Floodstage=15ft,2024-11-20 23:30,10-24,CONNECTICUT RIVER AT THOMPSONVILLE, CT01177000: Flow=286cfs,Stage=4.35ft,Floodstage=12ft,2024-11-20 23:30,10-24,CHICOPEE RIVER AT INDIAN ORCHARD, MA01176000: Flow=59.4cfs,Stage=2.81ft,2024-11-20 23:00,10-24,QUABOAG RIVER AT WEST BRIMFIELD, MA01124000: Flow=65.2cfs,Stage=2.59ft,2024-11-20 23:00,10-24,QUINEBAUG RIVER AT QUINEBAUG, CT01123600: Flow=56.5cfs,Stage=3.60ft,2024-11-20 23:30,10-24,QUINEBAUG R BL WESTVILLE DAM NR SOUTHBRIDGE, MA01123360: Flow=38.7cfs,Stage=2.60ft,2024-11-20 23:30,10-24,QUINEBAUG R BL E BRIMFIELD DAM AT FISKDALE, MA01105880: Flow=2.84cfs,Stage=1.74ft,2024-11-20 22:45,10-24,HERRING RIVER AT NORTH HARWICH, MA01105585: Flow=1.54cfs,Stage=1.65ft,2024-11-20 23:48,10-24,TOWN BROOK AT QUINCY, MA01104000: Flow=2.53cfs,Stage=79.85ft,2024-11-20 23:15,10-24,MOTHER BROOK AT DEDHAM, MA01102500: Flow=2.23cfs,Stage=7.19ft,2024-11-20 23:00,10-24,ABERJONA RIVER AT WINCHESTER, MA01100600: Flow=14.4cfs,Stage=2.21ft,Floodstage=7ft,2024-11-20 23:30,10-24,SHAWSHEEN RIVER NEAR WILMINGTON, MA01097000: Flow=41.9cfs,Stage=1.56ft,Floodstage=5ft,2024-11-20 23:15,10-24,ASSABET RIVER AT MAYNARD, MA011058837: Flow=13.2cfs,Stage=2.01ft,2024-11-20 23:15,25-75,QUASHNET RIVER AT WAQUOIT VILLAGE, MA01171500: Flow=30.5cfs,Stage=5.79ft,Floodstage=11ft,2024-11-20 23:00,25-75,MILL RIVER AT NORTHAMPTON, MA01110000: Flow=22.0cfs,Stage=1.42ft,2024-11-20 23:00,25-75,QUINSIGAMOND RIVER AT NORTH GRAFTON, MA422302071083801: Stage=15.98ft,2024-11-20 20:45,Not ranked,FRESH POND IN GATE HOUSE AT CAMBRIDGE, MA420259070105600: Stage=-1.01ft,2024-11-20 23:30,Not ranked,PROVINCETOWN TIDE GAGE, PROVINCETOWN, MA414507070091400: Stage=-1.89ft,2024-11-20 23:00,Not ranked,SESUIT HARBOR TIDE GAGE AT DENNIS, MA413758070320501: Stage=44.15ft,2024-11-20 21:15,Not ranked,ASHUMET POND, FALMOUTH, MA413601070275800: Stage=-0.75ft,2024-11-20 21:30,Not ranked,POPPONESSET BAY, MASHPEE NECK RD, NEAR MASHPEE, MA011055566: Flow=18.8cfs,Stage=0.65ft,2024-11-20 22:45,Not ranked,NEPONSET RIVER AT MILTON VILLAGE, MA011055525: Flow=0.05cfs,2024-09-01 23:15,Not ranked,PONKAPOAG BRK UPSTREAM RT 138,NR CANTON, MA01198125: Flow=158cfs,Stage=1.64ft,2024-11-20 23:15,Not ranked,HOUSATONIC RIVER NEAR ASHLEY FALLS, MA01172010: Flow=4970cfs,Stage=5.47ft,Floodstage=26.5ft,2024-11-20 23:30,Not ranked,CONNECTICUT R AT I-391 BRIDGE AT HOLYOKE, MA01168250: Flow=1.08cfs,Stage=3.75ft,2024-11-20 23:30,Not ranked,COLD RIVER AT FLORIDA, MA01161280: Flow=6560cfs,2024-11-20 23:00,Stage=12.72ft,2024-11-20 23:05:00,Not ranked,CONNECTICUT RIVER NEAR NORTHFIELD, MA01125100: Flow=58.2cfs,Stage=6.91ft,2024-11-20 23:15,Not ranked,FRENCH RIVER AT NORTH GROSVENORDALE, CT01113895: Flow=164cfs,Stage=0.79ft,2024-11-20 21:00,Not ranked,BLACKSTONE R AT ROOSEVELT ST AT PAWTUCKET RI01111212: Flow=102cfs,Stage=6.76ft,2024-11-20 23:00,Not ranked,BLACKSTONE RIVER, RT 122 BRIDGE NEAR UXBRIDGE, MA01110500: Stage=3.41ft,Floodstage=9ft,2024-11-20 23:30,Not ranked,BLACKSTONE RIVER AT NORTHBRIDGE, MA01109730: Flow=54.6cfs,Stage=1.69ft,2024-11-20 23:00,Not ranked,BLACKSTONE RIVER, W. MAIN ST., AT MILLBURY, MA01108410: Flow=8.97cfs,Stage=3.11ft,Floodstage=8.5ft,2024-11-20 23:00,Not ranked,MILL RIVER AT SPRING STREET AT TAUNTON, MA01105933: Flow=7.55cfs,Stage=8.43ft,2024-11-20 23:15,Not ranked,PASKAMANSET RIVER NEAR SOUTH DARTMOUTH, MA01105917: Flow=2.47cfs,Stage=3.22ft,2024-11-20 23:30,Not ranked,MATTAPOISETT RIVER NEAR MATTAPOISETT, MA01105876: Stage=4.87ft,2024-11-20 23:00,Not ranked,EEL RIVER AT RT 3A NEAR PLYMOUTH, MA01105638: Flow=10.4cfs,Stage=1.18ft,2024-11-20 23:30,Not ranked,WEIR RIVER AT LEAVITT STREET AT HINGHAM, MA01105608: Flow=1.87cfs,Stage=31.41ft,2024-11-20 22:45,Not ranked,WHITMANS POND FISH LADDER AT EAST WEYMOUTH, MA01105607: Stage=64.99ft,2024-11-20 23:00,Not ranked,WHITMANS POND FLOOD BY-PASS AT EAST WEYMOUTH, MA01105606: Flow=1.87cfs,Stage=71.59ft,2024-11-20 21:15,Not ranked,WHITMANS POND, WHITMANS POND DAM AT E. WEYMOUTH,MA01105584: Stage=16.38ft,2024-11-20 21:00,Not ranked,TOWN BROOK AT DIVERSION TUNNEL AT QUINCY, MA01105583: Flow=1.47cfs,Stage=0.80ft,2024-11-20 23:00,Not ranked,MONATIQUOT RIVER AT EAST BRAINTREE, MA01105554: Flow=26.1cfs,Stage=6.64ft,2024-11-20 23:30,Not ranked,NEPONSET RIVER AT GREENLODGE ST NEAR CANTON, MA01104715: Stage=106.91ft,2024-11-20 23:48,Not ranked,CHARLES RIVER, NEW CHARLES RIVER DAM AT BOSTON, MA01104705: Stage=107.04ft,2024-11-20 21:40,Not ranked,CHARLES RIVER AT FIRST ST AT CAMBRIDGE, MA01104683: Stage=7.02ft,Floodstage=15ft,2024-11-20 23:40,Not ranked,MUDDY RIVER AT BROOKLINE, MA01104501: Flow=2.14cfs,Stage=1.87ft,2024-11-20 23:00,Not ranked,BEAVER BROOK, LINDEN STREET, AT WALTHAM, MA01104480: Flow=27.3cfs,Stage=1.33ft,2024-11-20 21:40,Not ranked,STONY BROOK RESERVOIR AT DAM NEAR WALTHAM, MA01104475: Flow=0.04cfs,Stage=0.16ft,2024-11-20 23:30,Not ranked,STONY BROOK RES., UNNAMED TRIB 1, NEAR WESTON, MA01104460: Flow=10.6cfs,Stage=4.94ft,2024-11-20 21:40,Not ranked,STONY BROOK AT RT 20 AT WALTHAM, MA01104455: Flow=0.22cfs,Stage=3.16ft,2024-11-20 23:40,Not ranked,STONY BROOK, UNNAMED TRIBUTARY 1, NEAR WALTHAM, MA01104430: Flow=10.6cfs,Stage=0.94ft,2024-11-20 23:40,Not ranked,HOBBS BK BELOW CAMBRIDGE RES NR KENDALL GREEN, MA01104425: Stage=170.30ft,2024-11-20 23:45,Not ranked,HOBBS BRK AT TRAPELO RD AT LINCOLN, MA01104420: Flow=0.03cfs,Stage=0.91ft,2024-11-20 23:30,Not ranked,CAMBRIDGE RES., UNNAMED TRIB 3, NR LEXINGTON, MA01104415: Flow=0.02cfs,Stage=0.35ft,2024-11-20 23:30,Not ranked,CAMBRIDGE RES., UNNAMED TRIB 2, NR LEXINGTON, MA01104410: Stage=0.23ft,2024-11-20 21:30,Not ranked,CAMBRIDGE RES., UNNAMED TRIB 1, NR LEXINGTON, MA01104405: Stage=0.05ft,2024-10-08 23:40,Not ranked,HOBBS BROOK AT MILL ST NR LINCOLN, MA01104370: Flow=1.05cfs,Stage=0.46ft,2024-11-20 21:40,Not ranked,STONY BROOK AT VILES STREET, NEAR WESTON, MA01103455: Flow=0.76cfs,Stage=1.32ft,2024-11-20 23:00,Not ranked,TROUT BROOK AT DOVER, MA01103280: Flow=8.65cfs,Stage=0.81ft,Floodstage=5ft,2024-11-20 22:45,Not ranked,CHARLES RIVER AT MEDWAY, MA01103050: Stage=105.47ft,2024-11-20 23:30,Not ranked,MYSTIC R AT AMELIA EARHART DAM NR SOMERVILLE, MA01103025: Flow=4.17cfs,Stage=1.71ft,2024-11-20 22:45,Not ranked,ALEWIFE BROOK NEAR ARLINGTON, MA01100870: Stage=-1.91ft,2024-11-20 23:00,Not ranked,MERRIMACK RIVER AT NEWBURYPORT, MA01100693: Stage=0.22ft,Floodstage=13ft,2024-11-20 23:00,Not ranked,MERRIMACK R 0.3 MILES U.S.RT 125 AT HAVERHILL,MA01100627: Flow=19.7cfs,Stage=23.91ft,Floodstage=29ft,2024-11-20 23:45,Not ranked,SHAWSHEEN RIVER AT BALMORAL STREET AT ANDOVER, MA01100568: Flow=2.03cfs,Stage=0.76ft,Floodstage=6ft,2024-11-20 22:55,Not ranked,SHAWSHEEN RIVER AT HANSCOM FIELD NEAR BEDFORD, MA01100561: Flow=5.69cfs,Stage=3.55ft,Floodstage=8ft,2024-11-20 23:15,Not ranked,SPICKET RIVER NEAR METHUEN, MA01100505: Flow=2.49cfs,Stage=2.43ft,2024-11-20 23:30,Not ranked,SPICKET RIVER AT NORTH SALEM, NH01100500: Stage=8.18ft,Floodstage=24ft,2024-11-20 23:30,Not ranked,MERRIMACK RIVER AT LAWRENCE, MA01095503: Flow=5.88cfs,Stage=0.77ft,2024-11-20 23:00,Not ranked,NASHUA RIVER, WATER STREET BRIDGE, AT CLINTON, MA01095434: Flow=0.61cfs,Stage=1.03ft,2024-11-20 23:20,Not ranked,GATES BROOK NEAR WEST BOYLSTON, MA01095375: Flow=2.11cfs,Stage=6.38ft,2024-11-20 23:30,Not ranked,QUINAPOXET RIVER AT CANADA MILLS NEAR HOLDEN, 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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