Overview Realtime Historical Map View

Chehalis River At Porter, Wa Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011
01-01 8075.83
01-02 7410.0
01-03 7099.09
01-04 8069.17
01-05 8880.83
01-06 10881.67
01-07 13420.83
01-08 14643.33
01-09 15636.36
01-10 12650.83
01-11 11370.0
01-12 11213.33
01-13 12481.67
01-14 12400.0
01-15 10757.5
01-16 9311.67
01-17 7910.0
01-18 7236.67
01-19 7490.0
01-20 8036.92
01-21 8197.5
01-22 8908.46
01-23 9750.0
01-24 9055.0
01-25 8684.55
01-26 8687.27
01-27 8502.31
01-28 8078.33
01-29 8905.38
01-30 8121.43
01-31 7768.57
02-01 8009.23
02-02 7608.46
02-03 7013.57
02-04 6510.71
02-05 6276.15
02-06 6062.31
02-07 7018.46
02-08 8058.33
02-09 6390.0
02-10 6392.5
02-11 6391.67
02-12 5663.08
02-13 6057.69
02-14 6056.92
02-15 5682.14
02-16 6184.62
02-17 6189.23
02-18 7075.38
02-19 7570.71
02-20 7886.92
02-21 7356.43
02-22 6725.0
02-23 7380.77
02-24 7856.92
02-25 7780.0
02-26 7180.0
02-27 7217.14
02-28 6719.29
02-29 7362.5
03-01 7846.92
03-02 8315.71
03-03 8496.43
03-04 7872.14
03-05 6975.0
03-06 6543.57
03-07 6799.29
03-08 6783.57
03-09 6474.29
03-10 6405.0
03-11 6928.57
03-12 6872.86
03-13 6887.86
03-14 7360.0
03-15 7812.86
03-16 8778.57
03-17 8737.86
03-18 8016.43
03-19 7884.67
03-20 6825.71
03-21 6542.67
03-22 7046.43
03-23 6296.0
03-24 5772.0
03-25 5812.67
03-26 5703.33
03-27 5354.67
03-28 5158.67
03-29 5242.67
03-30 5926.0
03-31 6882.14
04-01 6506.67
04-02 5884.67
04-03 5238.67
04-04 4695.33
04-05 4618.67
04-06 4467.86
04-07 4614.0
04-08 5184.0
04-09 6066.15
04-10 6124.67
04-11 5510.0
04-12 5377.14
04-13 5359.29
04-14 5147.14
04-15 5565.38
04-16 5931.54
04-17 5558.33
04-18 5211.54
04-19 4808.46
04-20 4624.62
04-21 4491.43
04-22 4237.86
04-23 3957.86
04-24 3897.86
04-25 4272.31
04-26 4327.14
04-27 3882.86
04-28 3571.43
04-29 3292.14
04-30 2863.08
05-01 3147.14
05-02 2950.77
05-03 2820.0
05-04 2828.67
05-05 3056.0
05-06 3095.33
05-07 2930.67
05-08 2790.71
05-09 2710.67
05-10 2640.14
05-11 2581.93
05-12 2351.13
05-13 2322.87
05-14 2215.08
05-15 2085.23
05-16 2420.29
05-17 2614.57
05-18 2451.33
05-19 2343.5
05-20 2147.57
05-21 1957.14
05-22 1829.67
05-23 1760.47
05-24 1821.0
05-25 1923.57
05-26 1813.93
05-27 1717.93
05-28 1717.5
05-29 1715.27
05-30 1697.2
05-31 1731.5
06-01 1583.87
06-02 1491.8
06-03 1415.4
06-04 1405.71
06-05 1343.93
06-06 1345.86
06-07 1376.54
06-08 1320.5
06-09 1384.0
06-10 1452.43
06-11 1544.0
06-12 1578.57
06-13 1484.08
06-14 1453.43
06-15 1427.2
06-16 1424.62
06-17 1442.36
06-18 1343.57
06-19 1308.75
06-20 1200.31
06-21 1131.0
06-22 1101.0
06-23 1027.62
06-24 1004.92
06-25 1087.0
06-26 1025.64
06-27 984.64
06-28 980.31
06-29 941.79
06-30 922.08
07-01 879.5
07-02 847.86
07-03 813.21
07-04 800.83
07-05 755.33
07-06 723.27
07-07 730.54
07-08 708.57
07-09 681.21
07-10 667.5
07-11 662.21
07-12 651.71
07-13 637.92
07-14 610.93
07-15 604.57
07-16 578.31
07-17 589.57
07-18 608.77
07-19 560.29
07-20 542.5
07-21 530.07
07-22 527.15
07-23 508.29
07-24 504.64
07-25 502.57
07-26 491.64
07-27 470.57
07-28 456.71
07-29 447.64
07-30 442.46
07-31 429.64
08-01 417.0
08-02 413.31
08-03 412.29
08-04 407.0
08-05 401.07
08-06 395.21
08-07 391.14
08-08 402.08
08-09 393.23
08-10 395.62
08-11 382.0
08-12 377.64
08-13 380.77
08-14 380.29
08-15 377.21
08-16 391.15
08-17 384.17
08-18 387.17
08-19 366.77
08-20 353.69
08-21 348.92
08-22 337.92
08-23 340.14
08-24 355.58
08-25 343.15
08-26 328.07
08-27 327.57
08-28 325.07
08-29 331.64
08-30 347.14
08-31 373.15
09-01 361.07
09-02 358.69
09-03 354.29
09-04 355.29
09-05 352.79
09-06 353.21
09-07 427.07
09-08 476.86
09-09 403.36
09-10 374.5
09-11 365.79
09-12 366.64
09-13 347.08
09-14 352.5
09-15 346.57
09-16 354.69
09-17 364.79
09-18 403.36
09-19 439.36
09-20 452.07
09-21 450.23
09-22 420.29
09-23 421.43
09-24 439.71
09-25 475.29
09-26 567.0
09-27 563.64
09-28 542.93
09-29 789.86
09-30 1469.0
10-01 1966.5
10-02 2161.75
10-03 1919.0
10-04 1379.92
10-05 1072.77
10-06 961.0
10-07 879.77
10-08 829.92
10-09 850.77
10-10 841.77
10-11 864.0
10-12 1031.75
10-13 1165.31
10-14 1062.64
10-15 1360.46
10-16 1392.31
10-17 1464.07
10-18 1545.14
10-19 1757.85
10-20 1895.08
10-21 1827.08
10-22 1914.07
10-23 2448.93
10-24 2252.36
10-25 1881.64
10-26 1652.77
10-27 1901.29
10-28 2036.62
10-29 1976.21
10-30 2353.29
10-31 2748.0
11-01 2543.0
11-02 3210.64
11-03 3097.46
11-04 2765.07
11-05 3276.71
11-06 4391.54
11-07 4561.54
11-08 4759.77
11-09 4333.31
11-10 3593.0
11-11 3241.85
11-12 3280.62
11-13 4432.92
11-14 6057.14
11-15 6937.93
11-16 6257.69
11-17 5074.08
11-18 5177.77
11-19 5224.23
11-20 7873.21
11-21 7276.14
11-22 7230.77
11-23 5921.54
11-24 6313.85
11-25 6786.15
11-26 7946.15
11-27 8025.83
11-28 6882.86
11-29 6817.29
11-30 6156.14
12-01 5677.71
12-02 6015.57
12-03 6667.62
12-04 6652.07
12-05 6869.14
12-06 7271.69
12-07 7260.54
12-08 7269.29
12-09 8498.57
12-10 9087.14
12-11 10124.29
12-12 11287.14
12-13 10148.46
12-14 9245.83
12-15 7043.08
12-16 6714.62
12-17 6636.67
12-18 7930.83
12-19 7546.67
12-20 9021.67
12-21 12036.15
12-22 13297.5
12-23 12579.23
12-24 11490.0
12-25 9932.31
12-26 8970.83
12-27 8134.55
12-28 8173.64
12-29 8480.0
12-30 8683.64
12-31 8200.83

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index