Theoretical mean water (MW) validated by the Finnish Meteorological Institute (mm)
*) Change of MW mm/yr 1896 1897 1898 1899 1900
1) 2) 3) 4) NN N43 N60 N2000 NN N43 N60 N2000 NN N43 N60 N2000 NN N43 N60 N2000 NN N43 N60 N2000
Kemi 7.30 7.35 4.35 6.17 161 391 533 944 154 384 526 937 147 377 519 930 139 369 511 922 132 362 504 915
Oulu 7.10 6.90 3.90 5.84 166 385 513 912 159 378 506 905 152 371 499 898 145 364 492 891 138 357 485 884
Raahe 7.80 7.42 4.42 4.21 167 426 536 961 159 418 528 953 152 411 521 946 144 403 513 938 136 395 505 930
Pietarsaari 8.20 8.01 5.01 4.28 154 404 549 989 146 396 541 981 137 387 532 972 129 379 524 964 121 371 516 956
Vaasa 8.00 7.74 4.74 4.43 176 413 540 974 168 405 532 966 160 397 524 958 152 389 516 950 144 381 508 942
Kaskinen 7.40 7.25 4.25 3.96 174 372 501 926 166 364 493 918 159 357 486 911 151 349 478 903 144 342 471 896
Mäntyluoto 6.40 6.37 3.37 3.05 146 306 442 826 139 299 435 819 133 293 429 813 126 286 422 806 120 280 416 800
Rauma 5.90 5.45 2.45 2.33 138 273 411 752 132 267 405 746 126 261 399 740 120 255 393 734 114 249 387 728
Turku 4.40 4.14 1.14 0.93 141 224 307 599 136 219 302 594 132 215 298 590 127 210 293 585 123 206 289 581
Föglö 4.60 4.27 1.27 1.13 141 232 316 589 137 228 312 585 132 223 307 580 128 219 303 576 123 214 298 571
Hanko 3.10 2.73 -0.27 -0.39 137 164 213 465 134 161 210 462 131 158 207 459 128 155 204 456 125 152 201 453
Helsinki 2.50 2.14 -0.86 -0.99 116 116 166 418 114 114 164 416 111 111 161 413 109 109 159 411 106 106 156 408
Hamina 2.20 1.69 -1.31 -1.40 116 107 170 382 114 105 168 380 111 102 165 377 109 100 163 375 107 98 161 373

*) A positive value means the zero level of the theoretical mean water is descending, a negative one it is ascending.
1) Use for data prior to 1990.
2) Use for data of 1991-1992.
3) Use for data of 1993-2005.
4) Use for data of 2006-2015.