Thousand Tons of Cargo on Key Segment of the St. Lawrence Seaway,,,,,,,,
all figures are metric tons,,,,,,,,
Directional breakdowns are not yet published for 2002 data.,,,,,,,,

,,,,,original,original,original,original
,,,Welland Canal,Montreal-Lake Ontario,Welland Canal,Welland Canal,Montreal-Lake Ontario,Montreal-Lake Ontario
Welland Open/Close,Montreal-Lake Ontario Open/Close,,thousand tons per day,thousand tons per day,upbound,downbound,upbound,downbound
closed,closed,Jan-80,,,,,,
closed,closed,Feb-80,,,,,,
3/24/80,3/24/80,Mar-80,57 ,83 ,156096,302150,290106,376823
open,open,Apr-80,195 ,164 ,1316618,4541750,1820592,3090972
open,open,May-80,245 ,193 ,1576708,6028246,1911908,4082432
open,open,Jun-80,232 ,192 ,1225541,5748297,1513250,4236645
open,open,Jul-80,218 ,177 ,1179786,5577263,1563250,3931280
open,open,Aug-80,220 ,179 ,1518446,5298254,1802623,3747399
open,open,Sep-80,227 ,181 ,1309867,5502016,1555236,3871462
open,open,Oct-80,235 ,199 ,1464490,5832101,1794068,4389464
open,open,Nov-80,240 ,228 ,1775775,5428404,2181958,4652186
12/31/80,12/19/80,Dec-80,124 ,139 ,483021,3361152,492624,2149831
closed,closed,Jan-81,,,,,,
closed,closed,Feb-81,,,,,,
3/25/81,3/25/81,Mar-81,48 ,85 ,59415,277670,243663,348099
open,open,Apr-81,205 ,168 ,1585577,4551498,1996391,3042959
open,open,May-81,236 ,214 ,2205377,5101556,2490861,4136127
open,open,Jun-81,204 ,187 ,1971620,4161534,2142936,3460885
open,open,Jul-81,229 ,178 ,2207984,4890496,2589060,2930329
open,open,Aug-81,221 ,188 ,2324932,4540817,2386839,3431827
open,open,Sep-81,196 ,173 ,1659769,4213211,1984029,3210254
open,open,Oct-81,232 ,197 ,1860353,5324452,2078870,4034084
open,open,Nov-81,253 ,239 ,2170915,5428781,2498840,4671701
12/27/81,12/20/81,Dec-81,160 ,145 ,555938,3758980,410712,2480791
closed,closed,Jan-82,,,,,,
closed,closed,Feb-82,,,,,,
closed,closed,Mar-82,,,,,,
4/5/82,4/5/82,Apr-82,104 ,109 ,782656,1910042,1046983,1792412
open,open,May-82,237 ,210 ,1258808,6097393,1523704,4977691
open,open,Jun-82,224 ,193 ,1182446,5535971,1443436,4348459
open,open,Jul-82,202 ,162 ,1081243,5168925,1348358,3673972
open,open,Aug-82,168 ,137 ,976782,4240695,1341025,2920206
open,open,Sep-82,160 ,137 ,928833,3878432,1111866,2992202
open,open,Oct-82,190 ,184 ,1018821,4875284,1531846,4179693
open,open,Nov-82,217 ,195 ,1285831,5214447,1540583,4304523
12/23/82,12/21/82,Dec-82,156 ,130 ,309052,3278443,262097,2476258
closed,closed,Jan-83,,,,,,
closed,closed,Feb-83,,,,,,
closed,3/31/83,Mar-83,,,,,16105,143149
4/5/83,open,Apr-83,151 ,127 ,869169,3065116,1326787,2483237
open,open,May-83,200 ,187 ,1305110,4888289,1713259,4088839
open,open,Jun-83,190 ,168 ,1323086,4372907,1660383,3381163
open,open,Jul-83,180 ,155 ,1392823,4187201,1681075,3112448
open,open,Aug-83,176 ,159 ,1383010,4060912,1865888,3049754
open,open,Sep-83,194 ,166 ,1441862,4389511,1705714,3263683
open,open,Oct-83,210 ,193 ,1631272,4880868,2189312,3791870
open,open,Nov-83,220 ,207 ,2180168,4423304,2603812,3607615
12/27/83,12/19/83,Dec-83,161 ,178 ,778827,3571651,816682,2560206
closed,closed,Jan-84,,,,,,
closed,closed,Feb-84,,,,,,
3/28/84,closed,Mar-84,,,,238279,,24849
open,4/2/84,Apr-84,141 ,118 ,1072665,3165359,1709126,1725166
open,open,May-84,235 ,208 ,1620250,5650771,2392384,4069031
open,open,Jun-84,231 ,202 ,1836948,5102397,2481684,3566067
open,open,Jul-84,230 ,197 ,2024998,5098950,2500595,3608487
open,open,Aug-84,208 ,179 ,1862241,4585854,2286057,3253576
open,open,Sep-84,204 ,170 ,1416985,4714502,1911155,3194224
open,open,Oct-84,203 ,189 ,1555957,4749597,2164375,3686674
open,open,Nov-84,203 ,166 ,1788982,4301610,2125198,2848026
open,open,Dec-84,101 ,128 ,900767,2229746,1066109,2889992
1/1/82,1/2/85,Jan-85,,,,,,2681
closed,closed,Feb-85,,,,,,
closed,closed,Mar-85,,,,,,
4/1/85,4/1/85,Apr-85,127 ,115 ,1103432,2702562,1590285,1866115
open,open,May-85,200 ,169 ,1578683,4634234,2007020,3242084
open,open,Jun-85,172 ,144 ,1210290,3961225,1510626,2804827
open,open,Jul-85,143 ,119 ,1248589,3182316,1567191,2118436
open,open,Aug-85,130 ,111 ,1143605,2900007,1691378,1740860
open,open,Sep-85,159 ,142 ,1382666,3393274,1761318,2513230
open,open,Oct-85,89 ,110 ,585574,2188288,1492357,1917549
open,open,Nov-85,205 ,177 ,1936256,4205031,2250766,3060895
12/30/85,12/30/85,Dec-85,150 ,140 ,698406,3797322,954368,3232393
closed,closed,Jan-86,,,,,,
closed,closed,Feb-86,,,,,,
closed,closed,Mar-86,,,,,,
4/3/86,4/3/86,Apr-86,131 ,108 ,1071634,2608774,1343078,1681935
open,open,May-86,167 ,153 ,1367840,3814586,1930902,2809907
open,open,Jun-86,152 ,125 ,1010056,3556306,1392098,2365074
open,open,Jul-86,136 ,120 ,991147,3236197,1529263,2195360
open,open,Aug-86,133 ,116 ,1128984,2983980,1678143,1922834
open,open,Sep-86,129 ,118 ,1016962,2839368,1706482,1835856
open,open,Oct-86,180 ,167 ,1133560,4438934,1861602,3329837
open,open,Nov-86,211 ,212 ,1677059,4644087,2439224,3910127
12/26/86,12/27/86,Dec-86,157 ,135 ,826788,3266508,765393,2884693
closed,closed,Jan-87,,,,,,
closed,closed,Feb-87,,,,,,
closed,3/31/87,Mar-87,,,,,98396,
4/1/87,open,Apr-87,164 ,142 ,1355022,3563445,1748034,2517001
open,open,May-87,188 ,176 ,1389427,4432759,1953382,3490501
open,open,Jun-87,164 ,153 ,1181503,3724969,1725596,2877647
open,open,Jul-87,104 ,94 ,1141726,2091979,1491655,1407182
open,open,Aug-87,114 ,110 ,993828,2535073,1692794,1727851
open,open,Sep-87,162 ,149 ,1342384,3515577,2093383,2377221
open,open,Oct-87,189 ,178 ,1491894,4370246,2266570,3236835
open,open,Nov-87,187 ,186 ,1633956,3985617,2628247,2965322
12/28/87,12/26/87,Dec-87,142 ,141 ,900303,3075047,1112407,2558591
closed,closed,Jan-88,,,,,,
closed,closed,Feb-88,,,,,,
3/30/88,3/29/88,Mar-88,,,93943,226469,200077,125332
open,open,Apr-88,146 ,135 ,1119395,3248723,1611018,2436747
open,open,May-88,198 ,186 ,1419285,4704595,2127435,3624521
open,open,Jun-88,160 ,149 ,1339889,3473500,1963877,2515204
open,open,Jul-88,146 ,129 ,1425675,3106014,1954827,2050331
open,open,Aug-88,147 ,141 ,1441647,3115831,2270155,2094605
open,open,Sep-88,151 ,136 ,1484141,3033610,2133688,1934534
open,open,Oct-88,163 ,160 ,1662032,3398947,2458679,2490089
open,open,Nov-88,181 ,185 ,1766564,3669532,2852477,2690441
12/25/88,12/23/88,Dec-88,152 ,131 ,611421,3195104,1082027,1941605
closed,closed,Jan-89,,,,,,
closed,closed,Feb-89,,,,,,
3/31/89,3/30/89,Mar-89,,,18094,74443,105357,
open,open,Apr-89,134 ,118 ,1436701,2591015,1808985,1722479
open,open,May-89,169 ,160 ,1824386,3410563,2450388,2513349
open,open,Jun-89,159 ,139 ,1599017,3182951,2124642,2056829
open,open,Jul-89,142 ,137 ,1552572,2862118,2389104,1872180
open,open,Aug-89,140 ,134 ,1214244,3126979,2078968,2072529
open,open,Sep-89,163 ,159 ,1319791,3572456,2141854,2621319
open,open,Oct-89,147 ,136 ,1334704,3236950,1945886,2281973
open,open,Nov-89,161 ,164 ,1441984,3393130,2182920,2731358
12/23/89,12/23/89,Dec-89,118 ,86 ,371615,2345737,299112,1671138
closed,closed,Jan-90,,,,,,
closed,closed,Feb-90,,,,,,
3/28/90,3/28/90,Mar-90,,,87442,159630,321066,23904
open,open,Apr-90,141 ,128 ,1283595,2958049,1866340,1988571
open,open,May-90,162 ,145 ,1308323,3718844,2083804,2401152
open,open,Jun-90,160 ,136 ,1254089,3559949,1749377,2342527
open,open,Jul-90,147 ,132 ,1575357,2969575,2228942,1866667
open,open,Aug-90,131 ,124 ,1198820,2862130,1853169,1996778
open,open,Sep-90,130 ,118 ,1317089,2577058,1887020,1655962
open,open,Oct-90,128 ,122 ,1424037,2529573,2061926,1718571
open,open,Nov-90,175 ,171 ,1839275,3414247,2539519,2602352
12/24/90,12/26/90,Dec-90,140 ,133 ,673438,2687380,1056059,2412233
closed,closed,Jan-91,,,,,,
closed,closed,Feb-91,,,,,,
3/26/91,3/26/91,Mar-91,36 ,9 ,80928,134312,51041,
open,open,Apr-91,137 ,123 ,818550,3294738,1367512,2314672
open,open,May-91,148 ,143 ,976312,3615971,1440622,2988344
open,open,Jun-91,149 ,153 ,630944,3839731,1396577,3183064
open,open,Jul-91,132 ,130 ,898235,3187569,1537303,2493306
open,open,Aug-91,120 ,108 ,823644,2895600,1402131,1959885
open,open,Sep-91,125 ,106 ,885869,2870263,1351990,1842014
open,open,Oct-91,139 ,139 ,1019447,3282950,1789355,2526654
open,open,Nov-91,157 ,153 ,1292155,3431999,2004032,2582634
12/24/91,12/24/91,Dec-91,122 ,112 ,457605,2482150,639991,2039316
closed,closed,Jan-92,,,,,,
closed,closed,Feb-92,,,,,,
3/30/92,3/30/92,Mar-92,,,21838,186203,39940,76350
open,open,Apr-92,117 ,117 ,974629,2539085,1534400,1983829
open,open,May-92,125 ,121 ,899072,2974028,1641162,2096885
open,open,Jun-92,124 ,103 ,902356,2813941,1319260,1779588
open,open,Jul-92,125 ,117 ,876684,2994884,1568676,2057462
open,open,Aug-92,128 ,127 ,977240,2991709,1852033,2075732
open,open,Sep-92,117 ,106 ,1006753,2497426,1614164,1570320
open,open,Oct-92,113 ,111 ,996491,2503042,1770794,1670772
open,open,Nov-92,149 ,144 ,1256009,3203558,1989408,2343641
12/24/92,12/23/92,Dec-92,107 ,103 ,422169,2137401,661627,1714123
closed,closed,Jan-93,,,,,,
closed,closed,Feb-93,,,,,,
3/30/93,3/30/93,Mar-93,,,,,52120,
open,open,Apr-93,88 ,94 ,697986,1949427,1414188,1396467
open,open,May-93,125 ,121 ,1232280,2638902,1961607,1783254
open,open,Jun-93,112 ,107 ,1026053,2329616,1587430,1632833
open,open,Jul-93,113 ,103 ,1337479,2161041,1839029,1346524
open,open,Aug-93,116 ,113 ,1261833,2331740,1949942,1543902
open,open,Sep-93,120 ,119 ,1713387,1887587,2104805,1463367
open,open,Oct-93,130 ,135 ,1468959,2555315,2260830,1912610
open,open,Nov-93,150 ,154 ,1857068,2634402,2509594,2096391
12/25/93,12/26/93,Dec-93,109 ,120 ,635077,2096867,1347443,1768135
closed,closed,Jan-94,,,,,,
closed,closed,Feb-94,,,,,,
closed,closed,Mar-94,,,,,,
4/5/94,4/5/94,Apr-94,90 ,94 ,1012304,1340151,1667936,773361
open,open,May-94,137 ,135 ,1653761,2578323,2330981,1856536
open,open,Jun-94,142 ,120 ,1946976,2305485,2253076,1349807
open,open,Jul-94,145 ,134 ,2027924,2466337,2429130,1728248
open,open,Aug-94,146 ,146 ,1984979,2531558,2756300,1784062
open,open,Sep-94,153 ,154 ,1979200,2619278,2666146,1952811
open,open,Oct-94,181 ,177 ,2150799,3458813,2764291,2711408
open,open,Nov-94,173 ,173 ,2063511,3123060,2780751,2414120
12/30/94,12/29/94,Dec-94,149 ,145 ,1013053,3447577,1368878,2834282
closed,closed,Jan-95,,,,,,
closed,closed,Feb-95,,,,,,
3/24/95,3/24/95,Mar-95,93 ,59 ,215041,527844,226817,244960
open,open,Apr-95,125 ,120 ,1129635,2626282,1749345,1850634
open,open,May-95,149 ,145 ,1573976,3042661,2127965,2356782
open,open,Jun-95,141 ,144 ,1477200,2744956,2000108,2311286
open,open,Jul-95,151 ,149 ,1533315,3144421,2220926,2394746
open,open,Aug-95,137 ,136 ,1413455,2833495,1945102,2267213
open,open,Sep-95,152 ,152 ,1254007,3301349,1948133,2623947
open,open,Oct-95,152 ,151 ,1421538,3290749,1929388,2752814
open,open,Nov-95,158 ,161 ,1700287,3051899,2321169,2520248
12/25/95,12/28/95,Dec-95,124 ,103 ,743631,2350592,883428,2009750
closed,closed,Jan-96,,,,,,
closed,closed,Feb-96,,,,,,
3/29/96,3/29/96,Mar-96,,,79770,103682,147540,23816
open,open,Apr-96,126 ,117 ,1511542,2282157,2030417,1468464
open,open,May-96,150 ,143 ,1624976,3020753,2183962,2242624
open,open,Jun-96,139 ,122 ,1518261,2641531,1932522,1741046
open,open,Jul-96,125 ,114 ,1495022,2379884,2083298,1445457
open,open,Aug-96,150 ,131 ,1954618,2710859,2281385,1776410
open,open,Sep-96,164 ,151 ,2139778,2789549,2679543,1845594
open,open,Oct-96,180 ,167 ,2148739,3424275,2735426,2452076
open,open,Nov-96,194 ,187 ,2503923,3304351,3179951,2439759
12/25/96,12/27/96,Dec-96,140 ,125 ,1124136,2387408,1398335,1987507
closed,closed,Jan-97,,,,,,
closed,closed,Feb-97,,,,,,
closed,closed,Mar-97,,,,,,
4/2/97,4/2/97,Apr-97,128 ,111 ,1739192,1985668,1947980,1281743
open,open,May-97,144 ,127 ,1856504,2595877,2151202,1789641
open,open,Jun-97,148 ,126 ,1641101,2800819,1931663,1839614
open,open,Jul-97,143 ,133 ,1651144,2779669,2221296,1902514
open,open,Aug-97,143 ,138 ,1670509,2751804,2433653,1831835
open,open,Sep-97,154 ,138 ,1549165,3085748,2087854,2058798
open,open,Oct-97,183 ,169 ,1819510,3840141,2426366,2799705
open,open,Nov-97,179 ,164 ,2073226,3289782,2519821,2413782
12/24/97,12/26/97,Dec-97,157 ,126 ,964403,2808225,1133818,2129938
closed,closed,Jan-98,,,,,,
closed,closed,Feb-98,,,,,,
3/24/98,3/26/98,Mar-98,62 ,52 ,217501,276604,237615,73495
open,open,Apr-98,125 ,105 ,1604544,2152023,2005970,1151276
open,open,May-98,142 ,129 ,1842774,2566471,2555742,1448949
open,open,Jun-98,130 ,130 ,1876286,2010521,2492795,1405490
open,open,Jul-98,132 ,134 ,1875922,2205319,2686397,1482132
open,open,Aug-98,152 ,136 ,2256401,2465541,2814299,1404753
open,open,Sep-98,155 ,152 ,2010175,2634320,2625637,1934997
open,open,Oct-98,190 ,184 ,1971109,3908135,2679066,3013011
open,open,Nov-98,168 ,181 ,1929272,3112841,2935006,2509510
12/28/98,12/27/98,Dec-98,133 ,140 ,906790,2823048,1537451,2252318
closed,closed,Jan-99,,,,,,
closed,closed,Feb-99,,,,,,
3/30/99,3/31/99,Mar-99,,,64800,,136306,25152
open,open,Apr-99,108 ,90 ,1261754,1973122,1699093,987130
open,open,May-99,137 ,122 ,1496072,2763031,1969540,1819073
open,open,Jun-99,131 ,128 ,1454963,2466238,2226355,1619502
open,open,Jul-99,126 ,124 ,1656984,2263536,2285439,1545682
open,open,Aug-99,128 ,128 ,1531381,2435375,2278624,1686171
open,open,Sep-99,140 ,139 ,1758919,2443007,2323215,1832943
open,open,Oct-99,154 ,156 ,1526598,3257012,2319114,2522883
open,open,Nov-99,169 ,185 ,1889249,3194420,2961437,2596181
12/25/99,12/25/99,Dec-99,159 ,143 ,1131799,2853511,1394993,2182778
closed,closed,Jan-00,,,,19114,,
closed,closed,Feb-00,,,,,,
3/27/00,3/27/00,Mar-00,78 ,62 ,189924,199759,202152,105583
open,open,Apr-00,116 ,103 ,1435357,2045369,1786306,1297598
open,open,May-00,125 ,124 ,1481842,2408141,2276685,1552702
open,open,Jun-00,133 ,128 ,1616646,2382576,2288111,1563664
open,open,Jul-00,133 ,131 ,1777828,2351681,2492145,1563814
open,open,Aug-00,132 ,123 ,1576927,2526355,2076254,1741369
open,open,Sep-00,128 ,132 ,1423076,2403378,2126661,1837949
open,open,Oct-00,151 ,153 ,1510915,3178686,2388324,2360055,,,,,
open,open,Nov-00,158 ,160 ,1777914,2959142,2543125,2251775,,,,,
12/25/00,12/26/00,Dec-00,133 ,114 ,643516,2683145,988413,1963527,,,,,
closed,closed,Jan-01,,,,,,,,,,,
closed,closed,Feb-01,,,,,,,,,,,
3/23/01,3/23/01,Mar-01,50 ,42 ,215116,236830,300270,81171,,,,,
open,open,Apr-01,101 ,92 ,1107853,1927893,1511957,1247420,,,,,
open,open,May-01,113 ,112 ,1167004,2339871,1861061,1597430,,,,,
open,open,Jun-01,110 ,107 ,1228670,2075527,1866861,1329794,,,,,
open,open,Jul-01,112 ,113 ,1215186,2255034,1896042,1610158,,,,,
open,open,Aug-01,115 ,107 ,1159687,2391903,1653499,1651758,,,,,
open,open,Sep-01,114 ,106 ,1075411,2359284,1648414,1532247,,,,,
open,open,Oct-01,120 ,115 ,1340105,2368965,1800625,1754607,,,,,
open,open,Nov-01,149 ,135 ,1432276,3041791,2037255,2025360,,,,,
12/24/01,12/24/01,Dec-01,147 ,120 ,682129,2845744,1007239,1864656,,,,,
closed,closed,Jan-02,,,,18618,,,,,,,
closed,closed,Feb-02,,,,,
3/26/02,3/26/02,Mar-02,,,,,
open,open,Apr-02,107 ,92 ,3211000,,2757000
open,open,May-02,114 ,111 ,3547000,,3435000
open,open,Jun-02,108 ,120 ,3246000,,3609000
open,open,Jul-02,122 ,86 ,3786000,,2660000
open,open,Aug-02,109 ,96 ,3373000,,2973000
open,open,Sep-02,106 ,101 ,3191000,,3038000
open,open,Oct-02,133 ,135 ,4137000,,4177000
,,Nov-02,,,,,
,,Dec-02,,,,,
,,Jan-03,,,,,
,,,,,,,
,,,,,,,