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The Massachusetts-Rhode Island office of the New England Water Science Center has transitioned to a new data management software package. While you may not notice this transition, some sites may have problems or delays in being updated. We are actively monitoring these conditions and resolving them as quickly as possible. For more information contact Richard Verdi at rverdi@usgs.gov or 508-490-5064. See the December 8th news entry at: https:/ /help.waterdata.usgs.gov/news


ICE EFFECTS ON STREAMFLOW During winter, ice formation may cause stage and discharge values to appear higher than expected. Ice effects may be minor (occurring only at night and early morning) with baseline flows obvious, or the effects may be major (stage constantly increases over several days or weeks) resulting in greatly erroneous discharge. Streamgages experiencing minor ice conditions will continue to display stage and discharge values to enable users to estimate the approximate base-line stage and discharge. Streamgages experiencing major ice conditions will have the discharge record temporarily disabled to prevent use of erroneous discharge values. The discharge record will resume when it is determined that ice conditions are no longer present. Daily mean discharges during periods of ice effect will be estimated after detailed data analysis.

Current Conditions for Massachusetts: Streamflow -- 165 site(s) found

PROVISIONAL DATA SUBJECT TO REVISION




Customize table to display other current-condition parameters
Station
Number 		Station name Date/Time Gage
height,
feet 		Dis-
charge,
ft3/s 		Long-
term
median
flow
1/27
Group MERRIMACK RIVER BASIN
01094400 NORTH NASHUA RIVER AT FITCHBURG, MA  01/27 16:30 EST 3.19 147 80.0 
01094500 NORTH NASHUA RIVER NEAR LEOMINSTER, MA  01/27 16:15 EST 3.13 280 158 
01095220 STILLWATER RIVER NEAR STERLING, MA  01/27 16:00 EST 5.24 87 40.0 
01095375 QUINAPOXET RIVER AT CANADA MILLS NEAR HOLDEN, MA  01/27 16:00 EST 7.10 44 46.0 
01095503 NASHUA RIVER, WATER STREET BRIDGE, AT CLINTON, MA  01/27 17:00 EST 0.93 8.4 8.50 
      RADAR  01/27 17:00 EST 0.92 --     --- 
01096000 SQUANNACOOK RIVER NEAR WEST GROTON, MA  01/27 16:00 EST 2.99 172 100 
01096500 NASHUA RIVER AT EAST PEPPERELL, MA  01/27 16:30 EST 2.75 734 511 
01097000 ASSABET RIVER AT MAYNARD, MA  01/27 16:15 EST 3.19 374 183 
01097300 NASHOBA BROOK NEAR ACTON, MA  01/27 16:45 EST 4.41 31 16.0 
01098500 COCHITUATE BK BL LAKE COCHITUATE AT FRAMINGHAM, MA  01/27 16:00 EST 5.02 62 30.0 
01098530 SUDBURY RIVER AT SAXONVILLE, MA  01/27 16:15 EST 7.51 458 198 
01099500 CONCORD R BELOW R MEADOW BROOK, AT LOWELL, MA  01/27 16:30 EST 5.98 1,080 655 
01100000 MERRIMACK RIVER BL CONCORD RIVER AT LOWELL, MA  01/27 16:30 EST 44.06 7,720 6,450 
01100500 MERRIMACK RIVER AT LAWRENCE, MA  01/27 16:30 EST 12.56 --     --- 
01100561 SPICKET RIVER NEAR METHUEN, MA  01/27 16:30 EST 4.30 133 80.0 
01100568 SHAWSHEEN RIVER AT HANSCOM FIELD NEAR BEDFORD, MA  01/27 15:10 EST 0.82 2.7 3.00 
01100600 SHAWSHEEN RIVER NEAR WILMINGTON, MA  01/27 16:30 EST 3.65 133 55.0 
01100627 SHAWSHEEN RIVER AT BALMORAL STREET AT ANDOVER, MA  01/27 16:30 EST 28.28 Rat 93.0 
01100693 MERRIMACK R 0.3 MILES U.S.RT 125 AT HAVERHILL,MA  01/27 16:15 EST 3.58 --     --- 
01100870 MERRIMACK RIVER AT NEWBURYPORT, MA  01/27 17:00 EST -3.79 --     --- 
Group PARKER RIVER BASIN
01101000 PARKER RIVER AT BYFIELD, MA  01/27 16:30 EST 2.80 101 37.0 
424752070491701 PLUM ISLAND R @ TPK BRIDGE AT PLUM ISLAND, MA  01/27 16:00 EST -2.79 914 162 
Group IPSWICH RIVER BASIN
01101500 IPSWICH RIVER AT SOUTH MIDDLETON, MA  01/27 16:30 EST 3.69 148 55.0 
01102000 IPSWICH RIVER NEAR IPSWICH, MA  01/27 17:00 EST 4.40 423 165 
Group NORTH COASTAL BASIN
01102345 SAUGUS RIVER AT SAUGUS IRONWORKS AT SAUGUS, MA  01/27 16:00 EST 2.52 43 27.0 
Group MYSTIC RIVER BASIN
01102500 ABERJONA RIVER AT WINCHESTER, MA 
      MYSTIC VALLEY PARKWAY  01/27 06:45 EST 8.24 76 30.0 
01103010 MYSTIC RIVER AT ARLINGTON, MA  01/27 16:15 EST 105.74 76     --- 
01103025 ALEWIFE BROOK NEAR ARLINGTON, MA  01/27 16:15 EST 1.86 14 7.70 
01103038 MALDEN RIVER AT MALDEN, MA  01/27 15:15 EST 105.61 7.0     --- 
01103040 MYSTIC RIVER RT 16 AT MEDFORD, MA  01/27 16:00 EST 105.35 -172 -6.00 
01103050 MYSTIC R AT AMELIA EARHART DAM NR SOMERVILLE, MA  01/27 16:30 EST 105.07 --     --- 
Group CHARLES RIVER BASIN
01103280 CHARLES RIVER AT MEDWAY, MA  01/27 16:45 EST 1.91 212 93.0 
01103455 TROUT BROOK AT DOVER, MA  01/27 16:00 EST 1.87 7.2 4.80 
01103500 CHARLES RIVER AT DOVER, MA  01/27 16:45 EST 2.56 601 310 
01104000 MOTHER BROOK AT DEDHAM, MA  01/27 16:15 EST 83.22 295 78.0 
01104200 CHARLES RIVER AT WELLESLEY, MA  01/27 16:15 EST 3.73 368 289 
01104370 STONY BROOK AT VILES STREET, NEAR WESTON, MA  01/27 16:40 EST 1.44 30 15.0 
01104405 HOBBS BROOK AT MILL ST NR LINCOLN, MA  01/27 16:40 EST 1.24 --     --- 
01104410 CAMBRIDGE RES., UNNAMED TRIB 1, NR LEXINGTON, MA  01/27 14:40 EST 0.77 --     --- 
01104415 CAMBRIDGE RES., UNNAMED TRIB 2, NR LEXINGTON, MA  01/27 15:30 EST 0.80 0.78 .43 
01104420 CAMBRIDGE RES., UNNAMED TRIB 3, NR LEXINGTON, MA  01/27 15:30 EST 1.71 2.1 1.10 
01104430 HOBBS BK BELOW CAMBRIDGE RES NR KENDALL GREEN, MA  01/27 16:30 EST -0.15 0.04 5.10 
01104455 STONY BROOK, UNNAMED TRIBUTARY 1, NEAR WALTHAM, MA  01/27 15:30 EST 3.46 1.7 .57 
01104460 STONY BROOK AT RT 20 AT WALTHAM, MA  01/27 16:00 EST 5.62 43 29.0 
01104475 STONY BROOK RES., UNNAMED TRIB 1, NEAR WESTON, MA  01/27 15:30 EST 0.70 2.0 1.00 
01104480 STONY BROOK RESERVOIR AT DAM NEAR WALTHAM, MA  01/27 16:00 EST 1.35 29 14.0 
01104500 CHARLES RIVER AT WALTHAM, MA  01/27 16:30 EST 2.20 464 320 
01104501 BEAVER BROOK, LINDEN STREET, AT WALTHAM, MA  01/27 17:00 EST 2.96 55     --- 
01104683 MUDDY RIVER AT BROOKLINE, MA  01/27 16:30 EST 7.91 --     --- 
01104705 CHARLES RIVER AT FIRST ST AT CAMBRIDGE, MA  01/27 16:00 EST 107.41 --     --- 
01104715 CHARLES RIVER, NEW CHARLES RIVER DAM AT BOSTON, MA  01/27 16:00 EST 107.29 --     --- 
Group NEPONSET RIVER BASIN
01105000 NEPONSET RIVER AT NORWOOD, MA  01/27 16:15 EST 6.66 112 53.0 
01105500 EAST BRANCH NEPONSET RIVER AT CANTON, MA  01/27 16:15 EST 1.96 88 53.0 
011055525 PONKAPOAG BRK UPSTREAM RT 138,NR CANTON, MA  10/14 10:30 EDT Ssn --     --- 
    10/13 07:00 EDT -- Ssn     --- 
01105554 NEPONSET RIVER AT GREENLODGE ST NEAR CANTON, MA  01/27 16:30 EST 10.88 323 146 
011055566 NEPONSET RIVER AT MILTON VILLAGE, MA  01/27 16:45 EST 2.94 594 238 
Group WEYMOUTH FORE RIVER BASIN
01105583 MONATIQUOT RIVER AT EAST BRAINTREE, MA  01/27 16:00 EST 2.74 115 35.0 
01105584 TOWN BROOK AT DIVERSION TUNNEL AT QUINCY, MA  01/27 16:00 EST 17.08 --     --- 
01105585 TOWN BROOK AT QUINCY, MA  01/27 16:00 EST 2.09 12 6.10 
Group WEYMOUTH BACK RIVER BASIN
01105600 OLD SWAMP RIVER NEAR SOUTH WEYMOUTH, MA  01/27 16:00 EST 3.07 16 7.20 
01105606 WHITMANS POND, WHITMANS POND DAM AT E. WEYMOUTH,MA  01/27 16:15 EST 72.94 43 12.0 
01105607 WHITMANS POND FLOOD BY-PASS AT EAST WEYMOUTH, MA  01/27 17:00 EST 65.93 --     --- 
01105608 WHITMANS POND FISH LADDER AT EAST WEYMOUTH, MA  01/27 16:45 EST 31.83 13 6.90 
Group SOUTH COASTAL RIVER BASIN
01105638 WEIR RIVER AT LEAVITT STREET AT HINGHAM, MA  01/27 16:30 EST 3.01 58 21.0 
01105730 INDIAN HEAD RIVER AT HANOVER, MA  01/27 16:30 EST 3.01 155 59.0 
01105870 JONES RIVER AT KINGSTON, MA  01/27 16:15 EST 3.30 67 36.0 
01105876 EEL RIVER AT RT 3A NEAR PLYMOUTH, MA  01/27 16:15 EST 4.95 34 30.0 
Group CAPE COD RIVER BASIN
011058798 HERRING R AT CHEQUESSETT NECK RD AT WELLFLEET, MA  01/27 16:00 EST -0.39 --     --- 
01105880 HERRING RIVER AT NORTH HARWICH, MA  01/27 16:45 EST 2.31 9.8 9.50 
011058837 QUASHNET RIVER AT WAQUOIT VILLAGE, MA  01/27 16:15 EST 2.04 12 15.0 
413601070275800 POPPONESSET BAY, MASHPEE NECK RD, NEAR MASHPEE, MA  01/27 16:15 EST -0.99 --     --- 
414507070091400 SESUIT HARBOR TIDE GAGE AT DENNIS, MA  01/27 17:00 EST -5.86 --     --- 
415639070032501 POLE DIKE CREEK, UPSTRM HERRING R NR WELLFLEET, MA  01/27 16:00 EST 2.70 --     --- 
      Downstream sensor  01/27 16:00 EST 2.59 --     --- 
415716070031801 BOUND BROOK, DNSTRM BOUND BK RD NR WELLFLEET, MA  01/27 16:00 EST 2.51 --     --- 
420259070105600 PROVINCETOWN TIDE GAGE, PROVINCETOWN, MA  01/27 16:30 EST -5.19 --     --- 
Group BUZZARDS BAY RIVER BASIN
01105917 MATTAPOISETT RIVER NEAR MATTAPOISETT, MA  01/27 16:30 EST 5.07 117 42.0 
01105933 PASKAMANSET RIVER NEAR SOUTH DARTMOUTH, MA  01/27 16:15 EST 11.19 145 53.0 
Group TAUNTON RIVER BASIN
01108000 TAUNTON RIVER NEAR BRIDGEWATER, MA  01/27 16:45 EST 5.65 1,120 531 
01108410 MILL RIVER AT SPRING STREET AT TAUNTON, MA  01/27 17:00 EST 4.86 159 86.0 
01109000 WADING RIVER NEAR NORTON, MA  01/27 16:15 EST 6.83 154 83.0 
01109060 THREEMILE RIVER AT NORTH DIGHTON, MA  01/27 16:15 EST 4.06 333 177 
01109070 SEGREGANSET RIVER NEAR DIGHTON, MA  01/27 16:45 EST 2.50 25 22.0 
Group TEN MILE RIVER BASIN
01109403 TEN MILE R., PAWTUCKET AVE. AT E. PROVIDENCE, RI  01/27 16:15 EST 3.86 179 111 
Group BLACKSTONE RIVER BASIN
01109730 BLACKSTONE RIVER, W. MAIN ST., AT MILLBURY, MA  01/27 17:00 EST 2.58 210 114 
01110000 QUINSIGAMOND RIVER AT NORTH GRAFTON, MA  01/27 17:00 EST 1.74 56 43.0 
01110500 BLACKSTONE RIVER AT NORTHBRIDGE, MA  01/27 16:30 EST 4.25 --     --- 
01111200 WEST RIVER BELOW WEST HILL DAM, NR UXBRIDGE, MA  01/27 16:30 EST 2.33 104     --- 
01111212 BLACKSTONE RIVER, RT 122 BRIDGE NEAR UXBRIDGE, MA  01/27 15:15 EST 9.22 793 348 
01111300 NIPMUC RIVER NEAR HARRISVILLE, RI  01/27 16:15 EST 4.15 45 29.0 
01111500 BRANCH RIVER AT FORESTDALE, RI  01/27 16:15 EST 3.81 384 168 
01112500 BLACKSTONE RIVER AT WOONSOCKET, RI  01/27 16:30 EST 3.89 1,520 740 
01113895 BLACKSTONE R AT ROOSEVELT ST AT PAWTUCKET RI  01/27 16:15 EST 2.12 1,630 647 
Group MOSHASSUCK RIVER BASIN
01114000 MOSHASSUCK RIVER AT PROVIDENCE, RI  01/27 16:45 EST 2.07 54 33.0 
Group WOONASQUATUCKET RIVER BASIN
01114500 WOONASQUATUCKET RIVER AT CENTERDALE, RI  01/27 16:45 EST 3.19 177 79.0 
Group PAWTUXET RIVER BASIN
01115098 PEEPTOAD BROOK AT ELMDALE RD NR NORTH SCITUATE, RI  01/27 16:20 EST 1.80 15 7.40 
01115110 HUNTINGHOUSE BK AT ELMDALE RD AT N SCITUATE, RI  01/27 16:20 EST 1.74 25 11.0 
01115114 RUSH BROOK NEAR ELMDALE RD NEAR NORTH SCITUATE, RI  01/27 16:20 EST 1.12 15 8.50 
01115120 UNNAMED TRIB TO SCITUATE RES NR NORTH SCITUATE, RI  01/27 16:20 EST 0.62 --     --- 
01115170 MOSWANSICUT STREAM NR NORTH SCITUATE, RI  01/27 16:20 EST 1.17 14 7.00 
01115183 QUONAPAUG BK AT RT 116 NR NORTH SCITUATE, RI  01/27 16:20 EST 1.14 7.3 3.80 
01115184 SPRUCE BROOK NR NORTH SCITUATE, RI  01/27 16:20 EST 0.80 --     --- 
01115187 PONAGANSET RIVER AT SOUTH FOSTER, RI  01/27 16:00 EST 2.06 47 33.0 
01115190 DOLLY COLE BK AT OLD DANIELSON PK AT S FOSTER, RI  01/27 15:20 EST 1.74 20 14.0 
01115265 HEMLOCK BROOK AT KING ROAD NR FOSTER, RI  01/27 16:20 EST 1.90 44 17.0 
01115275 BEAR TREE BROOK NR CLAYVILLE, RI  01/27 16:20 EST 0.85 --     --- 
01115276 WESTCONNAUG STREAM AT PLAINFIELD PIKE, RI  01/27 16:20 EST 1.29 23 9.50 
01115280 CORK BK AT ROCKLAND SCITUATE RD NR CLAYVILLE, RI  01/27 16:20 EST 1.10 5.0 2.30 
01115297 WILBUR HOLLOW BK AT OLD PLAINFIELD PK NR CLAYVILLE  01/27 14:20 EST 1.33 --     --- 
01115630 NOOSENECK RIVER AT NOOSENECK, RI  01/27 15:15 EST 1.60 27 18.0 
01116000 SOUTH BRANCH PAWTUXET RIVER AT WASHINGTON, RI  01/27 16:45 EST 2.34 262 160 
01116500 PAWTUXET RIVER AT CRANSTON, RI  01/27 16:45 EST 4.99 527 336 
Group HUNT RIVER BASIN
01116905 HUNT R 250 FT DS FRY BRK AT FRENCHTOWN, RI  01/27 16:00 EST 1.89 72 29.0 
01117000 HUNT RIVER NEAR EAST GREENWICH, RI  01/27 16:45 EST 1.55 85 47.0 
Group PAWCATUCK RIVER BASIN
01117350 CHIPUXET RIVER AT WEST KINGSTON, RI  01/27 16:15 EST 5.67 48 27.0 
01117370 QUEEN R AT LIBERTY RD AT LIBERTY RI  01/27 16:20 EST 2.42 64 38.0 
01117420 USQUEPAUG RIVER NEAR USQUEPAUG, RI  01/27 16:45 EST 4.91 145 90.0 
01117430 PAWCATUCK RIVER AT KENYON, RI  01/27 16:15 EST 1.64 294 117 
01117468 BEAVER RIVER NEAR USQUEPAUG, RI  01/27 16:45 EST 1.19 31 24.0 
01117500 PAWCATUCK RIVER AT WOOD RIVER JUNCTION, RI  01/27 16:45 EST 3.38 392 211 
01117800 WOOD RIVER NEAR ARCADIA, RI  01/27 16:45 EST 4.02 142 82.0 
01118000 WOOD RIVER AT HOPE VALLEY, RI  01/27 16:15 EST 3.14 275 166 
01118500 PAWCATUCK RIVER AT WESTERLY, RI  01/27 17:00 EST 5.97 1,300 642 
411838071513000 WATCH HILL COVE TIDE GAGE WESTERLY, R.I.  01/27 16:00 EST -2.34 --     --- 
Group THAMES RIVER BASIN
01123360 QUINEBAUG R BL E BRIMFIELD DAM AT FISKDALE, MA  01/27 16:30 EST 3.67 164 103 
01123600 QUINEBAUG R BL WESTVILLE DAM NR SOUTHBRIDGE, MA  01/27 16:30 EST 4.34 217 142 
01124350 FRENCH RIVER BELOW DAM, AT HODGES VILLAGE, MA  01/27 16:30 EST 1.70 83     --- 
01124500 LITTLE RIVER NEAR OXFORD, MA  01/27 16:30 EST 3.11 48     --- 
01125000 FRENCH RIVER AT WEBSTER, MA  01/27 16:30 EST 5.77 240     --- 
Group MILLERS RIVER BASIN
01162000 MILLERS RIVER NEAR WINCHENDON, MA  01/27 16:00 EST 5.12 Ice 122 
01162500 PRIEST BROOK NEAR WINCHENDON, MA  01/27 16:45 EST 3.02 39 20.0 
01163200 OTTER RIVER AT OTTER RIVER, MA  01/27 16:15 EST 1.35 61 43.0 
01163500 MILLERS R BL BIRCH HILL DAM AT SOUTH ROYALSTON, MA  01/27 16:30 EST 2.40 Ice     --- 
01164000 MILLERS RIVER AT SOUTH ROYALSTON, MA  01/27 16:30 EST 5.07 Ice     --- 
01165000 EAST BRANCH TULLY RIVER NEAR ATHOL, MA  01/27 16:30 EST 3.26 83     --- 
01166500 MILLERS RIVER AT ERVING, MA  01/27 16:00 EST 3.19 Ice 517 
Group DEERFIELD RIVER BASIN
01168250 COLD RIVER AT FLORIDA, MA  01/27 16:30 EST 6.707 Ice 4.50 
01168500 DEERFIELD RIVER AT CHARLEMONT, MA  01/27 16:30 EST 3.42 1,230 1,060 
01169000 NORTH RIVER AT SHATTUCKVILLE, MA  01/27 16:30 EST 2.73 Ice 115 
01169900 SOUTH RIVER NEAR CONWAY, MA  01/27 16:00 EST -- Ice 35.0 
      [DS pool]  01/27 16:00 EST 2.08 --     --- 
01170000 DEERFIELD RIVER NEAR WEST DEERFIELD, MA  01/27 16:30 EST 3.29 1,480 1,400 
01170100 GREEN RIVER NEAR COLRAIN, MA  01/27 16:15 EST 3.49 Ice 60.0 
Group CONNECTICUT RIVER BASIN
01170500 CONNECTICUT RIVER AT MONTAGUE CITY, MA  01/27 16:30 EST 11.84 13,900 9,560 
01171500 MILL RIVER AT NORTHAMPTON, MA  01/27 16:15 EST 6.32 80 75.0 
01172010 CONNECTICUT R AT I-391 BRIDGE AT HOLYOKE, MA  01/27 16:30 EST 8.83 13,300 12,400 
Group CHICOPEE RIVER BASIN
01172500 WARE RIVER NEAR BARRE, MA  01/27 16:30 EST 3.37 102 91.0 
01173000 WARE RIVER AT INTAKE WORKS NEAR BARRE, MA  01/27 16:15 EST 4.56 149 137 
01173500 WARE RIVER AT GIBBS CROSSING, MA  01/27 16:30 EST 2.95 392 275 
01174500 EAST BRANCH SWIFT RIVER NEAR HARDWICK, MA  01/27 16:30 EST 19.63 90 63.0 
01174565 WEST BRANCH SWIFT RIVER NEAR SHUTESBURY, MA  01/27 16:00 EST 2.70 Ice 18.0 
01175500 SWIFT RIVER AT WEST WARE, MA  01/27 16:15 EST 2.13 49 43.0 
01175670 SEVENMILE RIVER NEAR SPENCER, MA  01/27 16:30 EST 9.62 15 15.0 
01176000 QUABOAG RIVER AT WEST BRIMFIELD, MA  01/27 16:15 EST 3.69 189 237 
01177000 CHICOPEE RIVER AT INDIAN ORCHARD, MA  01/27 16:30 EST 5.18 898 880 
Group WESTFIELD RIVER BASIN
01179500 WESTFIELD RIVER AT KNIGHTVILLE, MA  01/27 16:30 EST 3.99 428 211 
01180500 MIDDLE BRANCH WESTFIELD RIVER AT GOSS HEIGHTS, MA  01/27 16:30 EST 2.51 115     --- 
01181000 WEST BRANCH WESTFIELD RIVER AT HUNTINGTON, MA  01/27 16:30 EST 4.03 164 122 
01183500 WESTFIELD RIVER NEAR WESTFIELD, MA  01/27 16:30 EST 4.79 923 718 
Group FARMINGTON RIVER BASIN
01185500 WEST BRANCH FARMINGTON RIVER NEAR NEW BOSTON, MA  01/27 16:30 EST 3.39 162 145 
Group HOUSATONIC RIVER BASIN
01197000 EAST BRANCH HOUSATONIC RIVER AT COLTSVILLE, MA  01/27 16:30 EST 1.27 100 79.0 
01197500 HOUSATONIC RIVER NEAR GREAT BARRINGTON, MA  01/27 16:30 EST 2.97 615 393 
01198000 GREEN RIVER NEAR GREAT BARRINGTON, MA  01/27 16:30 EST 1.12 102 70.0 
01198125 HOUSATONIC RIVER NEAR ASHLEY FALLS, MA  01/27 16:15 EST 4.55 988 770 
Group HUDSON RIVER BASIN
01331500 HOOSIC RIVER AT ADAMS, MA  01/27 16:45 EST 6.06 85 61.0 
01332500 HOOSIC RIVER NEAR WILLIAMSTOWN, MA  01/27 16:00 EST 5.78 268 168 
01333000 GREEN RIVER AT WILLIAMSTOWN, MA  01/27 16:15 EST -- Ice 58.0 
    07/11 23:45 EDT *** --     --- 
      [(orifice)]  01/27 16:15 EST 2.42 --     --- 

Data status codes:
  ***     Temporarily unavailable
  --     Parameter not determined
  Ice     Ice affected
  Rat     Rating being developed or revised
  Ssn     Parameter monitored seasonally