| Theoretical mean water (MW) validated by the Finnish Meteorological Institute (mm) | |||||||||||||||||||||||||||||
| *) Change of MW mm/yr | 1951 | 1952 | 1953 | 1954 | 1955 | ||||||||||||||||||||||||
| 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 | -240 | -10 | 132 | 543 | -248 | -18 | 124 | 535 | -255 | -25 | 117 | 528 | -262 | -32 | 110 | 521 | -270 | -40 | 103 | 514 | |||||
| Oulu | 7.10 | 6.90 | 3.90 | 5.84 | -224 | -5 | 123 | 522 | -231 | -12 | 116 | 515 | -238 | -19 | 109 | 508 | -245 | -26 | 102 | 501 | -253 | -34 | 95 | 494 | |||||
| Raahe | 7.80 | 7.42 | 4.42 | 4.21 | -262 | -3 | 107 | 532 | -270 | -11 | 99 | 524 | -277 | -18 | 92 | 517 | -285 | -26 | 84 | 509 | -293 | -34 | 76 | 501 | |||||
| Pietarsaari | 8.20 | 8.01 | 5.01 | 4.28 | -297 | -47 | 98 | 538 | -305 | -55 | 90 | 530 | -314 | -64 | 81 | 521 | -322 | -72 | 73 | 513 | -330 | -80 | 65 | 505 | |||||
| Vaasa | 8.00 | 7.74 | 4.74 | 4.43 | -264 | -27 | 100 | 534 | -272 | -35 | 92 | 526 | -280 | -43 | 84 | 518 | -288 | -51 | 76 | 510 | -296 | -59 | 68 | 502 | |||||
| Kaskinen | 7.40 | 7.25 | 4.25 | 3.96 | -233 | -35 | 94 | 519 | -241 | -43 | 86 | 511 | -248 | -50 | 79 | 504 | -256 | -58 | 71 | 496 | -263 | -65 | 64 | 489 | |||||
| Mäntyluoto | 6.40 | 6.37 | 3.37 | 3.05 | -206 | -46 | 90 | 474 | -213 | -53 | 83 | 467 | -219 | -59 | 77 | 461 | -226 | -66 | 70 | 454 | -232 | -72 | 64 | 448 | |||||
| Rauma | 5.90 | 5.45 | 2.45 | 2.33 | -187 | -52 | 86 | 427 | -193 | -58 | 80 | 421 | -199 | -64 | 74 | 415 | -205 | -70 | 68 | 409 | -211 | -76 | 63 | 404 | |||||
| Turku | 4.40 | 4.14 | 1.14 | 0.93 | -101 | -18 | 65 | 357 | -106 | -23 | 60 | 352 | -110 | -27 | 56 | 348 | -115 | -32 | 51 | 343 | -119 | -36 | 47 | 339 | |||||
| Föglö | 4.60 | 4.27 | 1.27 | 1.13 | -112 | -21 | 63 | 336 | -116 | -25 | 59 | 332 | -121 | -30 | 54 | 327 | -125 | -34 | 50 | 323 | -130 | -39 | 45 | 318 | |||||
| Hanko | 3.10 | 2.73 | -0.27 | -0.39 | -33 | -6 | 43 | 295 | -36 | -9 | 40 | 292 | -39 | -12 | 37 | 289 | -42 | -15 | 34 | 286 | -46 | -19 | 31 | 283 | |||||
| Helsinki | 2.50 | 2.14 | -0.86 | -0.99 | -22 | -22 | 29 | 281 | -24 | -24 | 26 | 278 | -27 | -27 | 24 | 276 | -29 | -29 | 21 | 273 | -32 | -32 | 19 | 271 | |||||
| Hamina | 2.20 | 1.69 | -1.31 | -1.40 | -5 | -14 | 49 | 261 | -7 | -16 | 47 | 259 | -10 | -19 | 44 | 256 | -12 | -21 | 42 | 254 | -14 | -23 | 40 | 252 | |||||
*) 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.