| ARADE | AVE | CÁVADO/RIBEIRAS COSTEIRAS | DOURO | GUADIANA | LIMA | MIRA | MONDEGO | RIBEIRAS DO ALGARVE | RIBEIRAS DO OESTE | SADO | TEJO | ||
| Capacidade Total 106m3 | 233.1 | 21.1 | 1 169.6 | 297.2 | 4 603.5 | 405.5 | 486.6 | 508.2 | 34.8 | 7.9 | 618.4 | 2 546.4 | |
| Média (106 m3) |
OUT | 27.7 | 12.0 | 696.7 | 179.5 | 3 319.0 | 217.6 | 334.2 | 321.4 | 19.5 | 3.9 | 263.9 | 1 552.7 |
| NOV | 29.0 | 13.4 | 742.4 | 182.1 | 3 443.1 | 225.4 | 343.2 | 339.4 | 20.7 | 4.4 | 282.1 | 1 630.9 | |
| DEZ | 40.6 | 14.8 | 790.1 | 201.7 | 3 489.0 | 245.0 | 355.6 | 352.9 | 23.1 | 4.7 | 324.6 | 1 780.9 | |
| JAN | 42.7 | 15.7 | 831.0 | 207.0 | 3 557.2 | 249.3 | 367.5 | 361.3 | 25.0 | 5.1 | 358.0 | 1 849.2 | |
| FEV | 36.5 | 16.1 | 849.5 | 214.3 | 3 743.1 | 263.5 | 376.1 | 376.9 | 26.4 | 5.3 | 380.7 | 1 930.3 | |
| MAR | 46.1 | 15.1 | 863.0 | 220.7 | 3 750.6 | 288.4 | 384.4 | 393.1 | 27.1 | 5.5 | 401.5 | 1 949.1 | |
| ABR | 45.9 | 16.4 | 866.9 | 219.3 | 3 791.2 | 308.5 | 381.0 | 448.1 | 27.3 | 5.6 | 408.8 | 1 980.2 | |
| MAI | 42.4 | 16.3 | 876.7 | 218.6 | 3 778.9 | 311.3 | 377.1 | 455.8 | 26.6 | 5.4 | 390.9 | 2 005.9 | |
| JUN | 41.3 | 14.5 | 838.9 | 243.6 | 3 614.8 | 298.1 | 367.8 | 439.0 | 25.0 | 5.1 | 360.7 | 1 914.2 | |
| JUL | 36.3 | 12.2 | 799.7 | 205.3 | 3 448.2 | 268.6 | 347.0 | 396.3 | 23.0 | 4.7 | 315.7 | 1 801.8 | |
| AGO | 29.4 | 11.3 | 743.8 | 193.9 | 3 428.7 | 243.2 | 342.5 | 349.3 | 20.8 | 4.4 | 276.7 | 1 657.3 | |
| SET | 27.8 | 10.6 | 697.2 | 182.4 | 3 335.5 | 215.9 | 336.3 | 318.5 | 19.3 | 4.0 | 254.6 | 1 560.6 | |
| 2020/21 (106 m3) |
OUT | 108.1 | 9.4 | 795.3 | 215.2 | 2 609.3 | 197.4 | 193.7 | 331.9 | 4.7 | 3.3 | 225.4 | 1 891.6 |
| NOV | 114.5 | 5.3 | 714.8 | 199.6 | 2 769.3 | 115.0 | 197.8 | 327.3 | 4.9 | 3.5 | 249.3 | 1 900.7 | |
| DEZ | 128.8 | 12.1 | 775.5 | 209.9 | 2 950.7 | 207.6 | 209.9 | 362.3 | 7.5 | 4.4 | 296.3 | 1 983.2 | |
| JAN | 130.0 | 20.6 | 881.3 | 242.8 | 3 124.2 | 261.9 | 211.3 | 341.5 | 7.9 | 4.7 | 326.6 | 2 086.7 | |
| FEV | 169.6 | 19.9 | 1 005.8 | 251.7 | 4 038.4 | 381.4 | 245.1 | 354.9 | 11.9 | 6.4 | 428.6 | 2 328.9 | |
| MAR | 178.2 | 14.1 | 954.2 | 245.9 | 4 111.6 | 334.4 | 249.3 | 369.9 | 12.3 | 6.4 | 436.4 | 2 190.3 | |
| ABR | 175.5 | 13.6 | 948.2 | 241.8 | 4 082.9 | 299.3 | 246.1 | 451.4 | 12.0 | 6.4 | 437.5 | 2 224.9 | |
| MAI | 169.6 | 17.2 | 951.4 | 245.1 | 3 985.8 | 283.7 | 240.1 | 453.8 | 11.0 | 6.3 | 420.1 | 2 232.1 | |
| JUN | 161.7 | 17.5 | 927.4 | 189.1 | 3 802.4 | 234.9 | 233.6 | 455.6 | 10.0 | 6.1 | 388.1 | 2 103.9 | |
| JUL | 152.1 | 14.3 | 853.2 | 224.7 | 3 595.1 | 194.8 | 225.7 | 420.0 | 8.5 | 5.8 | 337.0 | 1 909.9 | |
| AGO | 142.9 | 13.7 | 779.6 | 207.1 | 3 445.6 | 178.3 | 217.6 | 366.7 | 6.9 | 5.4 | 291.3 | 1 795.2 | |
| SET | 137.2 | 13.0 | 738.1 | 202.1 | 3 480.2 | 126.6 | 212.3 | 333.8 | 5.7 | 5.2 | 276.9 | 1 708.7 | |
| 2021/22 (106 m3) |
OUT | 131.6 | 7.6 | 689.0 | 198.1 | 3 481.9 | 94.9 | 207.7 | 343.0 | 4.8 | 5.0 | 252.0 | 1 537.7 |
| NOV | 128.1 | 5.6 | 565.7 | 184.6 | 3 473.2 | 67.8 | 204.0 | 325.8 | 4.8 | 5.0 | 244.8 | 1 475.1 | |
| DEZ | 127.0 | 11.2 | 553.0 | 168.2 | 3 501.0 | 89.9 | 204.1 | 338.1 | 5.0 | 5.0 | 257.2 | 1 444.7 | |
| JAN | 124.0 | 7.6 | 491.8 | 166.2 | 3 529.4 | 67.9 | 202.0 | 326.2 | 5.0 | 4.9 | 256.8 | 1 345.1 | |
| FEV | 121.4 | 10.1 | 470.1 | 172.7 | 3 503.8 | 77.8 | 199.4 | 340.4 | 5.1 | 4.8 | 257.3 | 1 347.1 | |
| MAR | 120.8 | 8.6 | 500.7 | 162.3 | 3 477.1 | 71.6 | 198.5 | 400.5 | 5.2 | 4.8 | 309.0 | 1 448.3 | |
| ABR | 118.9 | 9.6 | 525.3 | 167.9 | 3 437.6 | 77.1 | 196.6 | 465.8 | 5.4 | 4.7 | 341.5 | 1 523.0 | |
| MAI | 113.8 | 12.3 | 501.2 | 154.0 | 3 323.5 | 69.7 | 191.9 | 461.2 | 5.1 | 4.6 | 330.0 | 1 493.7 | |
| JUN | 107.4 | 13.3 | 459.1 | 165.8 | 3 202.6 | 74.4 | 187.1 | 437.0 | 4.6 | 4.3 | 303.9 | 1 433.1 | |
| JUL | 99.5 | 12.5 | 426.0 | 155.9 | 3 052.9 | 70.4 | 181.2 | 391.1 | 4.0 | 4.0 | 254.2 | 1 320.5 | |
| AGO | 92.7 | 10.7 | 396.1 | 150.1 | 2 869.3 | 74.5 | 175.9 | 341.4 | 3.4 | 3.8 | 217.8 | 1 216.9 | |
| SET | 88.4 | 10.4 | 413.3 | 118.8 | 2 803.7 | 90.4 | 172.8 | 318.4 | 3.1 | 3.6 | 214.4 | 1 187.6 | |