Data sets for long descriptions
Figure 2: Phosphorus Loadings (percent) and concentrations by month:
| Month | Percentage of annual load of phosphorus, by month (%) |
Concentration of phosphorous in water as a Z-score |
| January | 8.9469 | 0.7535 |
| February | 13.9182 | 0.2194 |
| March | 13.7275 | 1.4764 |
| April | 15.636 | 1.0777 |
| May | 1.9233 | 0.2915 |
June |
1.7235 | 0.4974 |
July |
2.9395 | 1.1431 |
August |
0.6966 | 0.9598 |
September |
1.6081 | 0.893 |
October |
7.2819 | 1.7802 |
November |
4.8711 | 1.0483 |
December |
26.7274 | 1.8597 |
Figure 6 and 9: Estimated Canadian Total Phosphorus Loads to Lake Erie, by Basin 2003-2013 (tonnes per annum).
All data are considered provisional and subject to change up to publication. Compiled 4/4/2015 by Matt Maccoux under contract with Environment Canada. Current citation is "Maccoux, Dove, Backus and Dolan, in preparation".
Total lake
Year: 2003
| MTA | 2003 | ||
| US Sources | Load | Error | MSE |
| Monitored Tributary | 3870 | 4188 | |
| Adjustment for Unmonitored Area | 1017 | 750 | |
| Direct Industrial Point Source | 7 | 0 | |
| Direct Municipal Point Source | 1169 | 1685 | |
| Indirect Industial Point Source | 31 | 9 | |
| Indirect Municipal Point Source | 314 | 138 | |
| Total US | 6063 | 81 | 6624 |
| Canadian Sources | |||
| Monitored Tributary | 572 | 7104 | |
| Adjustment for Unmonitored Area | 122 | 399 | |
| Direct Industrial Point Source | 27 | 8 | |
| Direct Municipal Point Source | 53 | 6 | |
| Indirect Industial Point Source | 0 | 0 | |
| Indirect Municipal Point Source | 88 |
6 |
|
| Total Canadian | 774 | 87 | 7517 |
| Atmospheric | 813 | 22633 | |
| Input from Lake Huron | 366 | 0 | |
| Total Lake | 8016 | 36774 | |
| Monitored Tributary | 4442 | ||
| Monitored Tributary (NPS only) | 4009 | 50% | |
| Adjustment for Unmonitored Area | 1139 | 14% | |
| Direct Point Source | 1256 | 16% | |
| Indirect Point Source | 433 | 5% | |
| Atmospheric | 813 | 10% | |
| Input from Lake Huron | 366 | 5% | |
Year: 2004
| MTA | 2004 | ||
| US Sources | Load | Error | MSE |
| Monitored Tributary | 3769 | 3579 |
|
| Adjustment for Unmonitored Area | 1384 | 3541 | |
| Direct Industrial Point Source | 8 | 0 | |
| Direct Municipal Point Source | 1321 | 1606 | |
| Indirect Industial Point Source | 27 | 2 | |
| Indirect Municipal Point Source | 372 | 56 | |
| Total US | 6482 | 93 | 8727 |
| Canadian Sources | |||
| Monitored Tributary | 1204 | 6318 | |
| Adjustment for Unmonitored Area | 363 | 1248 | |
| Direct Industrial Point Source | 28 | 3 | |
| Direct Municipal Point Source | 54 | 3 | |
| Indirect Industial Point Source | 0 | 0 | |
| Indirect Municipal Point Source | 87 | 3 | |
| Total Canadian | 1648 | 87 | 7572 |
| Atmospheric | 511 | 6143 | |
| Input from Lake Huron | 364 | 0 | |
| Total Lake | 9006 | 150 | 22442 |
| Monitored Tributary | 4973 |
||
| Monitored Tributary (NPS only) | 4488 | 50% | |
| Adjustment for Unmonitored Area | 1747 | 19% | |
| Direct Point Source | 1410 | 16% | |
| Indirect Point Source | 485 | 5% | |
| Atmospheric | 511 | 6% | |
| Input from Lake Huron | 364 | 4% | |
Year: 2005
| MTA | 2005 | ||
| US Sources | Load | Error | MSE |
| Monitored Tributary | 4687 | 21017 | |
| Adjustment for Unmonitored Area | 1224 | 7138 | |
| Direct Industrial Point Source | 7 | 0 | |
| Direct Municipal Point Source | 1353 | 2771 | |
| Indirect Industial Point Source | 25 | 4 | |
| Indirect Municipal Point Source | 351 | 36 | |
| Total US | 7271 | 176 | 30926 |
| Canadian Sources | |||
| Monitored Tributary | 662 | 1053 | |
| Adjustment for Unmonitored Area | 158 | 195 | |
| Direct Industrial Point Source | 23 | 2 | |
| Direct Municipal Point Source | 61 | 7 | |
| Indirect Industial Point Source | 0 | 0 | |
| Indirect Municipal Point Source | 90 | 3 | |
| Total Canadian | 904 | 35 | 1257 |
| Atmospheric | 363 | 3814 | |
| Input from Lake Huron | 354 | 0 | |
| Total Lake | 8892 | 190 | 35997 |
| Monitored Tributary | 5349 | ||
| Monitored Tributary (NPS only) | 4883 | 55% | |
| Adjustment for Unmonitored Area | 1382 | 16% | |
| Direct Point Source | 1444 | 16% | |
| Indirect Point Source | 467 | 5% | |
| Atmospheric | 363 | 4% | |
| Input from Lake Huron | 354 | 4% | |
Year: 2006
| MTA | 2006 | ||
| US Sources | Load | Error | MSE |
| Monitored Tributary | 3884 | 5795 | |
| Adjustment for Unmonitored Area | 1159 | 1556 | |
| Direct Industrial Point Source | 7 | 1 | |
| Direct Municipal Point Source | 1389 | 2857 | |
| Indirect Industial Point Source | 31 | 3 | |
| Indirect Municipal Point Source | 366 | 60 | |
| Total US | 6438 | 101 | 10209 |
| Canadian Sources | |||
| Monitored Tributary | 891 | 8042 | |
| Adjustment for Unmonitored Area | 239 | 1866 | |
| Direct Industrial Point Source | 25 | 1 | |
| Direct Municipal Point Source | 56 | 6 | |
| Indirect Industial Point Source | 1 | 0 | |
| Indirect Municipal Point Source | 96 | 3 | |
| Total Canadian | 1211 | 100 | 9915 |
| Atmospheric | 632 | 19701 | |
| Input from Lake Huron | 335 | 0 | |
| Total Lake | 8617 | 200 | 39825 |
| Monitored Tributary | 4775 |
||
| Monitored Tributary (NPS only) | 4281 | 50% | |
| Adjustment for Unmonitored Area | 1398 | 16% | |
| Direct Point Source | 1476 | 17% | |
| Indirect Point Source | 494 | 6% | |
| Atmospheric | 632 | 7% | |
| Input from Lake Huron | 335 | 4% | |
Year: 2007
| MTA | 2007 | ||
| US Sources | Load | Error | MSE |
| Monitored Tributary | 6211 | 16028 | |
| Adjustment for Unmonitored Area | 1730 | 12591 | |
| Direct Industrial Point Source | 13 | 13 | |
| Direct Municipal Point Source | 1427 | 5993 | |
| Indirect Industial Point Source | 33 | 8 | |
| Indirect Municipal Point Source | 366 | 297 | |
| Total US | 9381 | 186 | 34624 |
| Canadian Sources | |||
| Monitored Tributary | 1303 | 22602 | |
| Adjustment for Unmonitored Area | 335 | 1292 | |
| Direct Industrial Point Source | 24 | 1 | |
| Direct Municipal Point Source | 54 | 12 | |
| Indirect Industial Point Source | 1 | 0 | |
| Indirect Municipal Point Source | 89 | 3 | |
| Total Canadian | 1716 | 155 | 23907 |
| Atmospheric | 432 | 16377 | |
| Input from Lake Huron | 325 | 0 | |
| Total Lake | 11854 | 274 | 74908 |
| Monitored Tributary | 7514 | ||
| Monitored Tributary (NPS only) | 7025 | 59% | |
| Adjustment for Unmonitored Area | 2065 | 17% | |
| Direct Point Source | 1519 | 13% | |
| Indirect Point Source | 489 | 4% | |
| Atmospheric | 432 | 4% | |
| Input from Lake Huron | 325 | 3% | |
Year: 2008
| MTA | 2008 | ||
| US Sources | Load | Error | MSE |
| Monitored Tributary | 5808 | 2773 | |
| Adjustment for Unmonitored Area | 1430 | 1546 | |
| Direct Industrial Point Source | 7 | 0 | |
| Direct Municipal Point Source | 1417 | 2040 | |
| Indirect Industial Point Source | 32 | 5 | |
| Indirect Municipal Point Source | 352 | 77 | |
| Total US | 8662 | 80 | 6359 |
| Canadian Sources | |||
| Monitored Tributary | 871 | 4615 | |
| Adjustment for Unmonitored Area | 208 | 264 | |
| Direct Industrial Point Source | 21 | 2 | |
| Direct Municipal Point Source | 51 | 6 | |
| Indirect Industial Point Source | 1 | 0 | |
| Indirect Municipal Point Source | 93 | 8 | |
| Total Canadian | 1151 | 70 | 4887 |
| Atmospheric | 493 | 22006 | |
| Input from Lake Huron | 321 | 0 | |
| Total Lake | 10627 | 182 | 33252 |
| Monitored Tributary | 6678 | ||
| Monitored Tributary (NPS only) | 6201 | 58% | |
| Adjustment for Unmonitored Area | 1638 | 15% | |
| Direct Point Source | 1497 | 14% | |
| Indirect Point Source | 477 | 4% | |
| Atmospheric | 493 | 5% | |
| Input from Lake Huron | 321 | 3% | |
Year: 2009
| MTA | 2009 | ||
| US Sources | Load | Error | MSE |
| Monitored Tributary | 3577 | 3588 | |
| Adjustment for Unmonitored Area | 845 | 1821 | |
| Direct Industrial Point Source | 6 | 1 | |
| Direct Municipal Point Source | 1271 | 1285 | |
| Indirect Industial Point Source | 29 | 11 | |
| Indirect Municipal Point Source | 331 | 64 | |
| Total US | 5699 | 82 | 6696 |
| Canadian Sources | |||
| Monitored Tributary | 1197 | 13068 | |
| Adjustment for Unmonitored Area | 335 | 1054 | |
| Direct Industrial Point Source | 18 | 1 | |
| Direct Municipal Point Source | 45 | 29 | |
| Indirect Industial Point Source | 1 | 0 | |
| Indirect Municipal Point Source | 101 | 7 | |
| Total Canadian | 1595 | 119 | 14151 |
| Atmospheric | 651 | 20679 | |
| Input from Lake Huron | 321 | 0 | |
| Total Lake | 8265 | 204 | 41526 |
| Monitored Tributary | 4773 | ||
| Monitored Tributary (NPS only) | 4312 | 52% | |
| Adjustment for Unmonitored Area | 1180 | 14% | |
| Direct Point Source | 1340 | 16% | |
| Indirect Point Source | 462 | 6% | |
| Atmospheric | 651 | 8% | |
| Input from Lake Huron | 321 | 4% | |
Year: 2010
| MTA | 2010 | ||
| US Sources | Load | Error | MSE |
| Monitored Tributary | 2676 | 3210 | |
| Adjustment for Unmonitored Area | 801 | 7429 | |
| Direct Industrial Point Source | 9 | 4 | |
| Direct Municipal Point Source | 1113 | 1091 | |
| Indirect Industial Point Source | 24 | 5 | |
| Indirect Municipal Point Source | 286 | 38 | |
| Total US | 4599 | 108 | 11734 |
| Canadian Sources | |||
| Monitored Tributary | 367 | 365 | |
| Adjustment for Unmonitored Area | 80 | 28 | |
| Direct Industrial Point Source | 21 | 2 | |
| Direct Municipal Point Source | 39 | 5 | |
| Indirect Industial Point Source | 1 | 0 | |
| Indirect Municipal Point Source | 78 | 3 | |
| Total Canadian | 507 | 20 | 400 |
| Atmospheric | 412 | 6993 | |
| Input from Lake Huron | 321 | 0 | |
| Total Lake | 5839 | 138 | 19127 |
| Monitored Tributary | 3043 | ||
| Monitored Tributary (NPS only) | 2655 | 45% | |
| Adjustment for Unmonitored Area | 880 | 15% | |
| Direct Point Source | 1183 | 20% | |
| Indirect Point Source | 388 | 7% | |
| Atmospheric | 412 | 7% | |
| Input from Lake Huron | 321 | 5% | |
Year: 2011
| MTA | 2011 | ||
| US Sources | Load | Error | MSE |
| Monitored Tributary | 5603 | 18927 | |
| Adjustment for Unmonitored Area | 1705 | 10947 | |
| Direct Industrial Point Source | 4 | 0 | |
| Direct Municipal Point Source | 1110 | 1629 | |
| Indirect Industial Point Source | 38 | 28 | |
| Indirect Municipal Point Source | 307 | 50 | |
| Total US | 8422 | 177 | 31503 |
| Canadian Sources | |||
| Monitored Tributary | 1981 | 193815 | |
| Adjustment for Unmonitored Area | 611 | 17589 | |
| Direct Industrial Point Source | 17 | 0 | |
| Direct Municipal Point Source | 44 | 5 | |
| Indirect Industial Point Source | 1 | 0 | |
| Indirect Municipal Point Source | 85 | 7 | |
| Total Canadian | 2653 | 460 | 211409 |
| Atmospheric | 549 | 7310 | |
| Input from Lake Huron | 321 | 0 | |
| Total Lake | 11946 | 500 | 250222 |
| Monitored Tributary | 7585 | ||
| Monitored Tributary (NPS only) | 7153 | 60% | |
| Adjustment for Unmonitored Area | 2316 | 19% | |
| Direct Point Source | 1175 | 10% | |
| Indirect Point Source | 431 | 4% | |
| Atmospheric | 549 | 5% | |
| Input from Lake Huron | 321 | 3% | |
Year: 2012
| MTA | 2012 | ||
| US Sources | Load | Error | MSE |
| Monitored Tributary | 4427 | 31655 | |
| Adjustment for Unmonitored Area | 1469 | 18418 | |
| Direct Industrial Point Source | 3 | 0 | |
| Direct Municipal Point Source | 906 | 723 | |
| Indirect Industial Point Source | 26 | 9 | |
| Indirect Municipal Point Source | 294 | 21 | |
| Total US | 6806 | 225 | 50796 |
| Canadian Sources | |||
| Monitored Tributary | 833 | 1708 | |
| Adjustment for Unmonitored Area | 199 | 137 | |
| Direct Industrial Point Source | 17 | 0 | |
| Direct Municipal Point Source | 34 | 3 | |
| Indirect Industial Point Source | 1 | 0 | |
| Indirect Municipal Point Source | 79 |
5 | |
| Total Canadian | 1083 | 43 | 1848 |
| Atmospheric | 307 | 2314 | |
| Input from Lake Huron | 321 | 0 | |
| Total Lake | 8517 | 234 | 54958 |
| Monitored Tributary | 5260 | ||
| Monitored Tributary (NPS only) | 4861 | 57% | |
| Adjustment for Unmonitored Area | 1668 | 20% | |
| Direct Point Source | 961 | 11% | |
| Indirect Point Source | 399 | 5% | |
| Atmospheric | 307 | 4% | |
| Input from Lake Huron | 321 | 4% | |
Year: 2013
| MTA | 2013 | ||
| US Sources | Load | Error | MSE |
| Monitored Tributary | 4201 |
4483 | |
| Adjustment for Unmonitored Area | 1230 | 4379 | |
| Direct Industrial Point Source | 3 | 0 | |
| Direct Municipal Point Source | 772 | 2835 | |
| Indirect Industial Point Source | 23 | 1 | |
| Indirect Municipal Point Source | 303 | 35 | |
| Total US | 6206 | 108 | 11697 |
| Canadian Sources | |||
| Monitored Tributary | 837 | 3866 | |
| Adjustment for Unmonitored Area | 190 | 929 | |
| Direct Industrial Point Source | 19 | 1 | |
| Direct Municipal Point Source | 33 | 3 | |
| Indirect Industial Point Source | 1 | 0 | |
| Indirect Municipal Point Source | 86 | 10 | |
| Total Canadian | 1079 | 69 | 4798 |
| Atmospheric | 559 | 19211 | |
| Input from Lake Huron | 321 | 0 | |
| Total Lake | 8165 | 189 | 35706 |
| Monitored Tributary | 5038 | ||
| Monitored Tributary (NPS only) | 4625 | 57% | |
| Adjustment for Unmonitored Area | 1420 | 17% | |
| Direct Point Source | 828 | 10% | |
| Indirect Point Source | 413 | 5% | |
| Atmospheric | 559 | 7% | |
| Input from Lake Huron | 321 | 4% | |
Western basin
Year: 2003
| MTA | 2003 | |
| US Sources | Load | MSE |
| Monitored Tributary | 2538 | 2192 |
| Adjustment for Unmonitored Area | 314 | 418 |
| Direct Industrial Point Source | 4 | 0 |
| Direct Municipal Point Source | 878 | 1423 |
| Indirect Industial Point Source | 25 | 9 |
| Indirect Municipal Point Source | 196 | 57 |
| Total US | 3734 | 4032 |
| Canadian Sources | ||
| Monitored Tributary | 212 | 5431 |
| Adjustment for Unmonitored Area | 14 | 3 |
| Direct Industrial Point Source | 16 | 3 |
| Direct Municipal Point Source | 46 | 6 |
| Indirect Industial Point Source | ||
| Indirect Municipal Point Source | 42 | 3 |
| Total Canadian | 288 | 5443 |
| Atmospheric | 119 | 3313 |
| Input from Lake Huron | 366 | |
| Basin total |
4507 | 12789 |
Year: 2004
| MTA | 2004 | |
| US Sources | Load | MSE |
| Monitored Tributary | 2295 | 2965 |
| Adjustment for Unmonitored Area | 534 | 3409 |
| Direct Industrial Point Source | 5 | 0 |
| Direct Municipal Point Source | 960 | 1535 |
| Indirect Industial Point Source | 21 | 2 |
| Indirect Municipal Point Source | 237 | 44 |
| Total US | 3794 | 7909 |
| Canadian Sources | ||
| Monitored Tributary | 615 | 2801 |
| Adjustment for Unmonitored Area | 154 | 1026 |
| Direct Industrial Point Source | 19 | 3 |
| Direct Municipal Point Source | 46 | 3 |
| Indirect Industial Point Source | ||
| Indirect Municipal Point Source | 43.221 | 3 |
| Total Canadian | 834 | 3833 |
| Atmospheric | 75 | 899 |
| Input from Lake Huron | 364 | |
| Basin total |
5068 | 12642 |
Year: 2005
| MTA | 2005 | |
| US Sources | Load | MSE |
| Monitored Tributary | 3065 | 9159 |
| Adjustment for Unmonitored Area | 380 | 1742 |
| Direct Industrial Point Source | 4 | 0 |
| Direct Municipal Point Source | 1024 | 2712 |
| Indirect Industial Point Source | 22 | 4 |
| Indirect Municipal Point Source | 223 | 26 |
| Total US | 4473 | 13613 |
| Canadian Sources | ||
| Monitored Tributary | 343 | 377 |
| Adjustment for Unmonitored Area | 58 | 165 |
| Direct Industrial Point Source | 16 | 2 |
| Direct Municipal Point Source | 57 | 7 |
| Indirect Industial Point Source | ||
| Indirect Municipal Point Source | 43 | 3 |
| Total Canadian | 475 | 552 |
| Atmospheric | 53 | 558 |
| Input from Lake Huron | 354 | |
| Basin total |
5355 | 14723 |
Year: 2006
| MTA | 2006 | |
| US Sources | Load | MSE |
| Monitored Tributary | 2650 | 3051 |
| Adjustment for Unmonitored Area | 578 | 1316 |
| Direct Industrial Point Source | 4 | 0 |
| Direct Municipal Point Source | 1050 | 2809 |
| Indirect Industial Point Source | 28 | 3 |
| Indirect Municipal Point Source | 226 | 43 |
| Total US | 4281 | 7176 |
| Canadian Sources | ||
| Monitored Tributary | 413 | 6868 |
| Adjustment for Unmonitored Area | 108 | 1684 |
| Direct Industrial Point Source | 15 | 1 |
| Direct Municipal Point Source | 52 | 6 |
| Indirect Industial Point Source | ||
| Indirect Municipal Point Source | 48 | 3 |
| Total Canadian | 588 | 8559 |
| Atmospheric | 93 | 2884 |
| Input from Lake Huron | 335 | |
| Basin total |
5297 | 18619 |
Year: 2007
| MTA | 2007 | |
| US Sources | Load | MSE |
| Monitored Tributary | 4169 | 10656 |
| Adjustment for Unmonitored Area | 711 | 11717 |
| Direct Industrial Point Source | 7 | 13 |
| Direct Municipal Point Source | 1088 | 5928 |
| Indirect Industial Point Source | 30 | 8 |
| Indirect Municipal Point Source | 228 | 285 |
| Total US | 5975 | 28313 |
| Canadian Sources | ||
| Monitored Tributary | 508 | 3792 |
| Adjustment for Unmonitored Area | 120 | 350 |
| Direct Industrial Point Source | 15 | 0 |
| Direct Municipal Point Source | 51 | 12 |
| Indirect Industial Point Source | ||
| Indirect Municipal Point Source | 44 | 3 |
| Total Canadian | 694 | 4155 |
| Atmospheric | 63 | 2398 |
| Input from Lake Huron | 325 | |
| Basin total |
7057 | 34866 |
Year: 2008
| MTA | 2008 | |
| US Sources | Load | MSE |
| Monitored Tributary | 4148 | 1908 |
| Adjustment for Unmonitored Area | 598 | 1321 |
| Direct Industrial Point Source | 3 | 0 |
| Direct Municipal Point Source | 1089 | 1982 |
| Indirect Industial Point Source | 29 | 5 |
| Indirect Municipal Point Source | 224 | 61 |
| Total US | 5838 | 5211 |
| Canadian Sources | ||
| Monitored Tributary | 304 | 1236 |
| Adjustment for Unmonitored Area | 44 | 20 |
| Direct Industrial Point Source | 14 | 0 |
| Direct Municipal Point Source | 48 | 6 |
| Indirect Industial Point Source | ||
| Indirect Municipal Point Source | 48 | 7 |
| Total Canadian | 409 | 1263 |
| Atmospheric | 72 | 3222 |
| Input from Lake Huron | 321 | |
| Basin total |
6640 | 9696 |
Year: 2009
| MTA | 2009 | |
| US Sources | Load | MSE |
| Monitored Tributary | 2654 | 2336 |
| Adjustment for Unmonitored Area | 511 | 1699 |
| Direct Industrial Point Source | 4 | 1 |
| Direct Municipal Point Source | 942 | 1258 |
| Indirect Industial Point Source | 27 | 11 |
| Indirect Municipal Point Source | 197 | 52 |
| Total US | 4112 | 5294 |
| Canadian Sources | ||
| Monitored Tributary | 624 | 2791 |
| Adjustment for Unmonitored Area | 126 | 406 |
| Direct Industrial Point Source | 12 | 0 |
| Direct Municipal Point Source | 41 | 29 |
| Indirect Industial Point Source | ||
| Indirect Municipal Point Source | 56 | 3 |
| Total Canadian | 803 | 3226 |
| Atmospheric | 95 | 3027 |
| Input from Lake Huron | 321 | |
| Basin total |
5331 | 11547 |
Year: 2010
| MTA | 2010 | |
| US Sources | Load | MSE |
| Monitored Tributary | 1961 | 2263 |
| Adjustment for Unmonitored Area | 524 | 7046 |
| Direct Industrial Point Source | 8 | 4 |
| Direct Municipal Point Source | 827 | 969 |
| Indirect Industial Point Source | 22 | 5 |
| Indirect Municipal Point Source | 172 | 19 |
| Total US | 3320 | 10283 |
| Canadian Sources | ||
| Monitored Tributary | 147 | 94 |
| Adjustment for Unmonitored Area | 20 | 9 |
| Direct Industrial Point Source | 15 | 2 |
| Direct Municipal Point Source | 36 | 5 |
| Indirect Industial Point Source | ||
| Indirect Municipal Point Source | 34 | 1 |
| Total Canadian | 218 | 110 |
| Atmospheric | 60 | 1024 |
| Input from Lake Huron | 321 | |
| Basin total |
3919 | 11417 |
Year: 2011
| MTA | 2011 | |
| US Sources | Load | MSE |
| Monitored Tributary | 3469 | 2142 |
| Adjustment for Unmonitored Area | 796 | 2705 |
| Direct Industrial Point Source | 3 | 0 |
| Direct Municipal Point Source | 799 | 1566 |
| Indirect Industial Point Source | 33 | 28 |
| Indirect Municipal Point Source | 189 | 29 |
| Total US | 5067 | 6413 |
| Canadian Sources | ||
| Monitored Tributary | 1225 | 192839 |
| Adjustment for Unmonitored Area | 263 | 8192 |
| Direct Industrial Point Source | 14 | 0 |
| Direct Municipal Point Source | 40 | 5 |
| Indirect Industial Point Source | ||
| Indirect Municipal Point Source | 40 | 3 |
| Total Canadian | 1542 | 201036 |
| Atmospheric | 80 | 1070 |
| Input from Lake Huron | 321 | |
| Basin total |
7011 | 208520 |
Year: 2012
| MTA | 2012 | |
| US Sources | Load | MSE |
| Monitored Tributary | 2844 | 1405 |
| Adjustment for Unmonitored Area | 715 | 3033 |
| Direct Industrial Point Source | 3 | 0 |
| Direct Municipal Point Source | 621 | 680 |
| Indirect Industial Point Source | 24 | 9 |
| Indirect Municipal Point Source | 180 | 16 |
| Total US | 4183 | 5118 |
| Canadian Sources | ||
| Monitored Tributary | 388 | 1243 |
| Adjustment for Unmonitored Area | 63 | 71 |
| Direct Industrial Point Source | 14 | 0 |
| Direct Municipal Point Source | 32 | 3 |
| Indirect Industial Point Source | ||
| Indirect Municipal Point Source | 36 | 2 |
| Total Canadian | 496 | 1318 |
| Atmospheric | 45 | 339 |
| Input from Lake Huron | 321 | |
| Basin total |
5045 | 6774 |
Year: 2013
| MTA | 2013 | |
| US Sources | Load | MSE |
| Monitored Tributary | 2598 | 2532 |
| Adjustment for Unmonitored Area | 577 | 3663 |
| Direct Industrial Point Source | 2 | 0 |
| Direct Municipal Point Source | 523 | 2803 |
| Indirect Industial Point Source | 22 | 1 |
| Indirect Municipal Point Source | 180 | 23 |
| Total US | 3701 | 8998 |
| Canadian Sources | ||
| Monitored Tributary | 423 | 2744 |
| Adjustment for Unmonitored Area | 51 | 843 |
| Direct Industrial Point Source | 15 | 1 |
| Direct Municipal Point Source | 31 | 3 |
| Indirect Industial Point Source | ||
| Indirect Municipal Point Source | 44 | 9 |
| Total Canadian | 520 | 3590 |
| Atmospheric | 82 | 2812 |
| Input from Lake Huron | 321 | |
| Basin total |
4624 | 15401 |
Central basin
Year: 2003
| MTA | 2003 | |
| US Sources | Load | MSE |
| Monitored Tributary | 1332 | 1996 |
| Adjustment for Unmonitored Area | 414 | 194 |
| Direct Industrial Point Source | 1 | 0 |
| Direct Municipal Point Source | 222 | 253 |
| Indirect Industial Point Source | 6 | 0 |
| Indirect Municipal Point Source | 118 | 81 |
| Total US | 1969 | 2444 |
| Canadian Sources | ||
| Monitored Tributary | 107 | 1074 |
| Adjustment for Unmonitored Area | 36 | 132 |
| Direct Industrial Point Source | 1 | 0 |
| Direct Municipal Point Source | 4 | 0 |
| Indirect Industial Point Source | ||
| Indirect Municipal Point Source | 1 | 0 |
| Total Canadian | 148 | 1206 |
| Atmospheric | 496 | 13815 |
| Basin total |
2613 | 17464 |
Year: 2004
| MTA | 2004 | |
| US Sources | Load | MSE |
| Monitored Tributary | 1474 | 615 |
| Adjustment for Unmonitored Area | 483 | 77 |
| Direct Industrial Point Source | 2 | 0 |
| Direct Municipal Point Source | 287 | 61 |
| Indirect Industial Point Source | 6 | 0 |
| Indirect Municipal Point Source | 135 | 12 |
| Total US | 2246 | 753 |
| Canadian Sources | ||
| Monitored Tributary | 169 | 2017 |
| Adjustment for Unmonitored Area | 70 | 74 |
| Direct Industrial Point Source | 1 | 0 |
| Direct Municipal Point Source | 5 | 0 |
| Indirect Industial Point Source | ||
| Indirect Municipal Point Source | 1 | 0 |
| Total Canadian | 245 | 2091 |
| Atmospheric | 312 | 3750 |
| Basin total |
2803 | 6594 |
Year: 2005
| MTA | 2005 | |
| US Sources | Load | MSE |
| Monitored Tributary | 1622 | 11858 |
| Adjustment for Unmonitored Area | 556 | 5381 |
| Direct Industrial Point Source | 1 | 0 |
| Direct Municipal Point Source | 262 | 52 |
| Indirect Industial Point Source | 3 | 0 |
| Indirect Municipal Point Source | 128 | 10 |
| Total US | 2441 | 17291 |
| Canadian Sources | ||
| Monitored Tributary | 46 | 46 |
| Adjustment for Unmonitored Area | 33 | 10 |
| Direct Industrial Point Source | ||
| Direct Municipal Point Source | 1 | 0 |
| Indirect Industial Point Source | 0 | 0 |
| Indirect Municipal Point Source | 5 | 0 |
| Total Canadian | 80 | 56 |
| Atmospheric | 221 | 2328 |
| Basin total |
2743 | 19675 |
Year: 2006
| MTA | 2006 | |
| US Sources | Load | MSE |
| Monitored Tributary | 1203 | 2676 |
| Adjustment for Unmonitored Area | 336 | 214 |
| Direct Industrial Point Source | 2 | 0 |
| Direct Municipal Point Source | 270 | 41 |
| Indirect Industial Point Source | 3 | 0 |
| Indirect Municipal Point Source | 138 | 17 |
| Total US | 1812 | 2931 |
| Canadian Sources | ||
| Monitored Tributary | 196 | 414 |
| Adjustment for Unmonitored Area | 44 | 60 |
| Direct Industrial Point Source | ||
| Direct Municipal Point Source | 1 | 0 |
| Indirect Industial Point Source | 1 | 0 |
| Indirect Municipal Point Source | 6 | 0 |
| Total Canadian | 241 | 474 |
| Atmospheric | 386 | 12025 |
| Basin total |
2438 | 15431 |
Year: 2007
| MTA | 2007 | |
| US Sources | Load | MSE |
| Monitored Tributary | 2025 | 5367 |
| Adjustment for Unmonitored Area | 679 | 823 |
| Direct Industrial Point Source | 5 | 0 |
| Direct Municipal Point Source | 273 | 60 |
| Indirect Industial Point Source | 3 | 0 |
| Indirect Municipal Point Source | 136 | 12 |
| Total US | 2980 | 6251 |
| Canadian Sources | ||
| Monitored Tributary | 404 | 17007 |
| Adjustment for Unmonitored Area | 71 | 314 |
| Direct Industrial Point Source | ||
| Direct Municipal Point Source | 1 | 0 |
| Indirect Industial Point Source | 1 | 0 |
| Indirect Municipal Point Source | 5 | 0 |
| Total Canadian | 476 | 17321 |
| Atmospheric | 264 |
9997 |
| Basin total |
3720 | 33569 |
Year: 2008
| MTA | 2008 | |
| US Sources | Load | MSE |
| Monitored Tributary | 1660 | 865 |
| Adjustment for Unmonitored Area | 538 | 192 |
| Direct Industrial Point Source | 3 | 0 |
| Direct Municipal Point Source | 263 | 54 |
| Indirect Industial Point Source | 3 | 0 |
| Indirect Municipal Point Source | 128 | 16 |
| Total US | 2464 | 1111 |
| Canadian Sources | ||
| Monitored Tributary | 68 | 294 |
| Adjustment for Unmonitored Area | 55 | 81 |
| Direct Industrial Point Source | ||
| Direct Municipal Point Source | 1 | 0 |
| Indirect Industial Point Source | 1 | |
| Indirect Municipal Point Source | 5 | 0 |
| Total Canadian | 123 | 376 |
| Atmospheric | 301 | 13432 |
| Basin total |
2888 | 14919 |
Year: 2009
| MTA | 2009 | |
| US Sources | Load | MSE |
| Monitored Tributary | 923 | 1253 |
| Adjustment for Unmonitored Area | 221 | 89 |
| Direct Industrial Point Source | 1 | 0 |
| Direct Municipal Point Source | 265 | 24 |
| Indirect Industial Point Source | 3 | 0 |
| Indirect Municipal Point Source | 134 | 12 |
| Total US | 1410 | 1366 |
| Canadian Sources | ||
| Monitored Tributary | 89 | 108 |
| Adjustment for Unmonitored Area | 70 | 216 |
| Direct Industrial Point Source | ||
| Direct Municipal Point Source | 1 | 0 |
| Indirect Industial Point Source | 1 | |
| Indirect Municipal Point Source | 5 | 0 |
| Total Canadian | 160 | 324 |
| Atmospheric | 397 | 12622 |
| Basin total |
1967 | 14312 |
Year: 2010
| MTA | 2010 | |
| US Sources | Load | MSE |
| Monitored Tributary | 715 | 946 |
| Adjustment for Unmonitored Area | 183 | 273 |
| Direct Industrial Point Source | 1 | 0 |
| Direct Municipal Point Source | 231 | 120 |
| Indirect Industial Point Source | 2 | 0 |
| Indirect Municipal Point Source | 114 | 19 |
| Total US | 1130 | 1339 |
| Canadian Sources | ||
| Monitored Tributary | 24 | 54 |
| Adjustment for Unmonitored Area | 20 | 6 |
| Direct Industrial Point Source | ||
| Direct Municipal Point Source | 1 | 0 |
| Indirect Industial Point Source | 1 | |
| Indirect Municipal Point Source | 4 | 0 |
| Total Canadian | 45 | 60 |
| Atmospheric | 252 | 4269 |
| Basin total |
1427 | 5668 |
Year: 2011
| MTA | 2011 | |
| US Sources | Load | MSE |
| Monitored Tributary | 1761 | 2486 |
| Adjustment for Unmonitored Area | 481 | 872 |
| Direct Industrial Point Source | 0 | 0 |
| Direct Municipal Point Source | 255 | 60 |
| Indirect Industial Point Source | 5 | 0 |
| Indirect Municipal Point Source | 116 | 21 |
| Total US | 2497 | 3418 |
| Canadian Sources | ||
| Monitored Tributary | 123 | 170 |
| Adjustment for Unmonitored Area | 116 | 3132 |
| Direct Industrial Point Source | ||
| Direct Municipal Point Source | 1 | 0 |
| Indirect Industial Point Source | 1 | |
| Indirect Municipal Point Source | 6 | 0 |
| Total Canadian | 241 | 3302 |
| Atmospheric | 335 | 4462 |
| Basin total |
3073 | 11182 |
Year: 2012
| MTA | 2012 | |
| US Sources | Load | MSE |
| Monitored Tributary | 1144 | 511 |
| Adjustment for Unmonitored Area | 305 | 56 |
| Direct Industrial Point Source | 0 | 0 |
| Direct Municipal Point Source | 230 | 37 |
| Indirect Industial Point Source | 1 | 0 |
| Indirect Municipal Point Source | 112 | 5 |
| Total US | 1680 | 604 |
| Canadian Sources | ||
| Monitored Tributary | 156 | 249 |
| Adjustment for Unmonitored Area | 45 | 22 |
| Direct Industrial Point Source | ||
| Direct Municipal Point Source | 0 | 0 |
| Indirect Industial Point Source | 1 | |
| Indirect Municipal Point Source | 5 | 0 |
| Total Canadian | 202 | 271 |
| Atmospheric | 188 | 1412 |
| Basin total |
2070 | 2286 |
Year: 2013
| MTA | 2013 | |
| US Sources | Load | MSE |
| Monitored Tributary | 1403 | 1526 |
| Adjustment for Unmonitored Area | 427 | 485 |
| Direct Industrial Point Source | 0 | 0 |
| Direct Municipal Point Source | 194 | 26 |
| Indirect Industial Point Source | 2 | 0 |
| Indirect Municipal Point Source | 120 | 12 |
| Total US | 2025 | 2037 |
| Canadian Sources | ||
| Monitored Tributary | 121 | 263 |
| Adjustment for Unmonitored Area | 46 | 29 |
| Direct Industrial Point Source | ||
| Direct Municipal Point Source | 0 | 0 |
| Indirect Industial Point Source | 1 | |
| Indirect Municipal Point Source | 6 | 0 |
| Total Canadian | 168 | 292 |
| Atmospheric | 341 | 11726 |
| Basin total |
2534 | 14055 |
Eastern basin
Year: 2003
| MTA | 2003 |
| US Sources | Load |
| Monitored Tributary | 0 |
| Adjustment for Unmonitored Area | 290 |
| Direct Industrial Point Source | 1 |
| Direct Municipal Point Source | 70 |
| Indirect Industial Point Source | |
| Indirect Municipal Point Source | |
| Total US | 361 |
| Canadian Sources | |
| Monitored Tributary | 253 |
| Adjustment for Unmonitored Area | 72 |
| Direct Industrial Point Source | 10 |
| Direct Municipal Point Source | 2 |
| Indirect Industial Point Source | |
| Indirect Municipal Point Source | 45 |
| Total Canadian | 338 |
| Atmospheric | 198 |
| Basin total |
896 |
Year: 2004
| MTA | 2004 |
| US Sources | Load |
| Monitored Tributary | |
| Adjustment for Unmonitored Area | 366 |
| Direct Industrial Point Source | 1 |
| Direct Municipal Point Source | 74 |
| Indirect Industial Point Source | |
| Indirect Municipal Point Source | |
| Total US | 442 |
| Canadian Sources | |
| Monitored Tributary | 420 |
| Adjustment for Unmonitored Area | 139 |
| Direct Industrial Point Source | 8 |
| Direct Municipal Point Source | 3 |
| Indirect Industial Point Source | 0 |
| Indirect Municipal Point Source | 42 |
| Total Canadian | 569 |
| Atmospheric | 124 |
| Basin total |
1135 |
Year: 2005
| MTA | 2005 |
| US Sources | Load |
| Monitored Tributary | |
| Adjustment for Unmonitored Area | 288 |
| Direct Industrial Point Source | 1 |
| Direct Municipal Point Source | 68 |
| Indirect Industial Point Source | |
| Indirect Municipal Point Source | |
| Total US | 357 |
| Canadian Sources | |
| Monitored Tributary | 273 |
| Adjustment for Unmonitored Area | 67 |
| Direct Industrial Point Source | 7 |
| Direct Municipal Point Source | 3 |
| Indirect Industial Point Source | 0 |
| Indirect Municipal Point Source | 43 |
| Total Canadian | 350 |
| Atmospheric | 88 |
| Basin total |
795 |
Year: 2006
| MTA | 2006 |
| US Sources | Load |
| Monitored Tributary | 30 |
| Adjustment for Unmonitored Area | 246 |
| Direct Industrial Point Source | 1 |
| Direct Municipal Point Source | 68 |
| Indirect Industial Point Source | |
| Indirect Municipal Point Source | 2 |
| Total US | 345 |
| Canadian Sources | |
| Monitored Tributary | 282 |
| Adjustment for Unmonitored Area | 88 |
| Direct Industrial Point Source | 10 |
| Direct Municipal Point Source | 3 |
| Indirect Industial Point Source | 0 |
| Indirect Municipal Point Source | 42 |
| Total Canadian | 383 |
| Atmospheric | 154 |
| Basin total |
882 |
Year: 2007
| MTA | 2007 |
| US Sources | Load |
| Monitored Tributary | 17 |
| Adjustment for Unmonitored Area | 341 |
| Direct Industrial Point Source | 1 |
| Direct Municipal Point Source | 66 |
| Indirect Industial Point Source | |
| Indirect Municipal Point Source | 2 |
| Total US | 425 |
| Canadian Sources | |
| Monitored Tributary | 391 |
| Adjustment for Unmonitored Area | 143 |
| Direct Industrial Point Source | 10 |
| Direct Municipal Point Source | 2 |
| Indirect Industial Point Source | 0 |
| Indirect Municipal Point Source | 40 |
| Total Canadian | 546 |
| Atmospheric | 105 |
| Basin total |
1077 |
Year: 2008
| MTA | 2008 |
| US Sources | Load |
| Monitored Tributary | |
| Adjustment for Unmonitored Area | 293 |
| Direct Industrial Point Source | 1 |
| Direct Municipal Point Source | 66 |
| Indirect Industial Point Source | |
| Indirect Municipal Point Source | |
| Total US | 360 |
| Canadian Sources | |
| Monitored Tributary | 499 |
| Adjustment for Unmonitored Area | 109 |
| Direct Industrial Point Source | 8 |
| Direct Municipal Point Source | 3 |
| Indirect Industial Point Source | 0 |
| Indirect Municipal Point Source | 41 |
| Total Canadian | 618 |
| Atmospheric | 120 |
| Basin total |
1099 |
Year: 2009
| MTA | 2009 |
| US Sources | Load |
| Monitored Tributary | |
| Adjustment for Unmonitored Area | 113 |
| Direct Industrial Point Source | 0 |
| Direct Municipal Point Source | 64 |
| Indirect Industial Point Source | |
| Indirect Municipal Point Source | |
| Total US | 177 |
| Canadian Sources | |
| Monitored Tributary | 483 |
| Adjustment for Unmonitored Area | 139 |
| Direct Industrial Point Source | 6 |
| Direct Municipal Point Source | 3 |
| Indirect Industial Point Source | 0 |
| Indirect Municipal Point Source | 40 |
| Total Canadian | 631 |
| Atmospheric | 158 |
| Basin total |
967 |
Year: 2010
| MTA | 2010 |
| US Sources | Load |
| Monitored Tributary | |
| Adjustment for Unmonitored Area | 93 |
| Direct Industrial Point Source | 0 |
| Direct Municipal Point Source | 56 |
| Indirect Industial Point Source | |
| Indirect Municipal Point Source | |
| Total US | 149 |
| Canadian Sources | |
| Monitored Tributary | 196 |
| Adjustment for Unmonitored Area | 40 |
| Direct Industrial Point Source | 6 |
| Direct Municipal Point Source | 3 |
| Indirect Industial Point Source | 0 |
| Indirect Municipal Point Source | 39 |
| Total Canadian | 244 |
| Atmospheric | 100 |
| Basin total |
493 |
Year: 2011
| MTA | 2011 |
| US Sources | Load |
| Monitored Tributary | 373 |
| Adjustment for Unmonitored Area | 429 |
| Direct Industrial Point Source | 0 |
| Direct Municipal Point Source | 56 |
| Indirect Industial Point Source | |
| Indirect Municipal Point Source | 2 |
| Total US | 859 |
| Canadian Sources | |
| Monitored Tributary | 633 |
| Adjustment for Unmonitored Area | 232 |
| Direct Industrial Point Source | 3 |
| Direct Municipal Point Source | 3 |
| Indirect Industial Point Source | 0 |
| Indirect Municipal Point Source | 40 |
| Total Canadian | 870 |
| Atmospheric | 134 |
| Basin total |
1863 |
Year: 2012
| MTA | 2012 |
| US Sources | Load |
| Monitored Tributary | 439 |
| Adjustment for Unmonitored Area | 448 |
| Direct Industrial Point Source | 0 |
| Direct Municipal Point Source | 56 |
| Indirect Industial Point Source | |
| Indirect Municipal Point Source | 2 |
| Total US | 943 |
| Canadian Sources | |
| Monitored Tributary | 289 |
| Adjustment for Unmonitored Area | 91 |
| Direct Industrial Point Source | 3 |
| Direct Municipal Point Source | 2 |
| Indirect Industial Point Source | 0 |
| Indirect Municipal Point Source | 38 |
| Total Canadian | 385 |
| Atmospheric | 75 |
| Basin total |
1403 |
Year: 2013
| MTA | 2013 |
| US Sources | Load |
| Monitored Tributary | 200 |
| Adjustment for Unmonitored Area | 225 |
| Direct Industrial Point Source | 0 |
| Direct Municipal Point Source | 55 |
| Indirect Industial Point Source | |
| Indirect Municipal Point Source | 2 |
| Total US | 480 |
| Canadian Sources | |
| Monitored Tributary | 292 |
| Adjustment for Unmonitored Area | 93 |
| Direct Industrial Point Source | 4 |
| Direct Municipal Point Source | 2 |
| Indirect Industial Point Source | 0 |
| Indirect Municipal Point Source | 36 |
| Total Canadian | 391 |
| Atmospheric | 136 |
| Basin total |
1007 |
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