Overview Realtime Historical Map View

Chehalis River Near Grand Mound, 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 5091.67
01-02 4788.18
01-03 4521.67
01-04 6530.83
01-05 6931.82
01-06 8335.83
01-07 10071.67
01-08 11364.17
01-09 8920.0
01-10 8806.36
01-11 7443.33
01-12 7601.67
01-13 9380.0
01-14 9131.67
01-15 7487.5
01-16 5573.33
01-17 4753.08
01-18 4490.0
01-19 5309.23
01-20 5890.77
01-21 5491.67
01-22 6680.0
01-23 7552.5
01-24 6900.0
01-25 7236.15
01-26 6841.67
01-27 5915.83
01-28 5910.77
01-29 6806.92
01-30 5803.0
01-31 5914.54
02-01 5058.57
02-02 5204.62
02-03 4814.62
02-04 4139.29
02-05 3694.29
02-06 3880.83
02-07 4914.62
02-08 6061.82
02-09 5263.92
02-10 4433.38
02-11 3868.46
02-12 3212.71
02-13 3887.36
02-14 3547.57
02-15 3687.71
02-16 4031.43
02-17 4466.15
02-18 5642.31
02-19 5498.46
02-20 5452.86
02-21 4915.0
02-22 4422.86
02-23 5490.0
02-24 5549.29
02-25 4990.83
02-26 5154.62
02-27 5050.0
02-28 4320.0
02-29 4637.5
03-01 5744.29
03-02 6355.71
03-03 5895.71
03-04 4885.0
03-05 4404.29
03-06 4282.14
03-07 4792.86
03-08 4598.57
03-09 3882.86
03-10 4552.86
03-11 4862.86
03-12 4291.43
03-13 4742.14
03-14 5630.71
03-15 6294.62
03-16 6916.92
03-17 6463.85
03-18 5713.85
03-19 5258.57
03-20 4273.57
03-21 4476.0
03-22 4845.0
03-23 4235.33
03-24 3825.33
03-25 4012.0
03-26 3810.67
03-27 3548.0
03-28 3479.33
03-29 3598.0
03-30 4678.67
03-31 5360.0
04-01 4534.0
04-02 3932.27
04-03 3462.8
04-04 3052.53
04-05 3214.29
04-06 2909.23
04-07 2875.0
04-08 3190.0
04-09 4830.77
04-10 4281.33
04-11 3780.67
04-12 3890.0
04-13 3749.29
04-14 3555.71
04-15 3913.85
04-16 4445.38
04-17 3938.33
04-18 3563.85
04-19 3275.46
04-20 3130.54
04-21 3053.71
04-22 2769.0
04-23 2613.86
04-24 2624.14
04-25 3276.69
04-26 2864.0
04-27 2541.71
04-28 2355.07
04-29 2121.07
04-30 1930.86
05-01 2032.47
05-02 1840.21
05-03 1726.71
05-04 1827.27
05-05 2037.67
05-06 1973.67
05-07 1869.07
05-08 1770.21
05-09 1665.93
05-10 1665.29
05-11 1563.87
05-12 1470.73
05-13 1454.6
05-14 1389.0
05-15 1323.54
05-16 1702.71
05-17 1844.07
05-18 1617.07
05-19 1464.13
05-20 1384.57
05-21 1214.53
05-22 1153.8
05-23 1116.47
05-24 1161.47
05-25 1201.4
05-26 1135.07
05-27 1101.2
05-28 1048.93
05-29 1096.8
05-30 1150.67
05-31 1078.6
06-01 1040.33
06-02 969.93
06-03 917.53
06-04 881.67
06-05 1639.0
06-06 1128.43
06-07 893.71
06-08 860.86
06-09 873.0
06-10 974.0
06-11 1040.2
06-12 1060.0
06-13 963.21
06-14 928.71
06-15 940.47
06-16 931.5
06-17 989.71
06-18 861.5
06-19 782.79
06-20 748.43
06-21 688.64
06-22 652.57
06-23 622.07
06-24 628.57
06-25 640.57
06-26 609.0
06-27 581.29
06-28 560.86
06-29 551.86
06-30 528.43
07-01 505.79
07-02 479.86
07-03 460.64
07-04 447.33
07-05 423.67
07-06 405.35
07-07 404.61
07-08 391.69
07-09 385.16
07-10 389.79
07-11 397.89
07-12 391.08
07-13 345.24
07-14 360.43
07-15 355.77
07-16 329.33
07-17 343.23
07-18 356.38
07-19 320.86
07-20 309.93
07-21 297.41
07-22 315.23
07-23 290.86
07-24 306.54
07-25 314.15
07-26 296.69
07-27 266.36
07-28 256.89
07-29 253.61
07-30 252.63
07-31 237.57
08-01 235.75
08-02 228.0
08-03 219.21
08-04 222.57
08-05 220.57
08-06 260.64
08-07 258.43
08-08 220.08
08-09 220.77
08-10 221.69
08-11 207.14
08-12 206.93
08-13 203.0
08-14 196.07
08-15 205.07
08-16 204.0
08-17 206.51
08-18 216.64
08-19 200.52
08-20 190.28
08-21 189.97
08-22 179.9
08-23 183.54
08-24 188.98
08-25 185.56
08-26 176.79
08-27 177.83
08-28 180.69
08-29 179.44
08-30 180.05
08-31 198.08
09-01 218.94
09-02 210.64
09-03 209.36
09-04 214.36
09-05 204.92
09-06 191.69
09-07 388.35
09-08 288.79
09-09 238.4
09-10 216.47
09-11 216.38
09-12 206.98
09-13 194.61
09-14 196.67
09-15 193.29
09-16 193.69
09-17 209.54
09-18 217.18
09-19 272.24
09-20 281.89
09-21 270.6
09-22 253.11
09-23 238.34
09-24 257.22
09-25 339.58
09-26 324.41
09-27 332.71
09-28 364.29
09-29 843.71
09-30 1419.15
10-01 1930.92
10-02 1521.31
10-03 1024.77
10-04 886.33
10-05 633.0
10-06 535.57
10-07 493.14
10-08 482.76
10-09 478.72
10-10 529.49
10-11 496.27
10-12 561.36
10-13 839.46
10-14 658.43
10-15 1077.46
10-16 1158.69
10-17 1224.79
10-18 1255.5
10-19 1462.0
10-20 1628.54
10-21 1532.46
10-22 1392.69
10-23 2346.46
10-24 1810.77
10-25 1438.54
10-26 1217.25
10-27 1618.31
10-28 1540.58
10-29 1428.77
10-30 1804.29
10-31 1493.69
11-01 2471.36
11-02 2326.31
11-03 2396.85
11-04 1980.29
11-05 2949.15
11-06 3358.75
11-07 3498.92
11-08 3581.23
11-09 3089.15
11-10 2534.0
11-11 2278.46
11-12 2415.85
11-13 3487.46
11-14 3729.62
11-15 4879.71
11-16 5903.21
11-17 4697.23
11-18 3841.08
11-19 3707.15
11-20 5366.46
11-21 6214.5
11-22 5210.62
11-23 4278.92
11-24 4831.38
11-25 5173.85
11-26 5764.14
11-27 5324.58
11-28 4924.46
11-29 4931.43
11-30 4141.0
12-01 4017.93
12-02 4502.21
12-03 5105.08
12-04 4994.93
12-05 5122.64
12-06 5387.77
12-07 5533.57
12-08 5304.29
12-09 4655.92
12-10 7541.21
12-11 8664.36
12-12 8970.0
12-13 7887.86
12-14 6001.67
12-15 4428.33
12-16 4268.33
12-17 4335.0
12-18 5630.83
12-19 6520.0
12-20 6867.5
12-21 9561.0
12-22 9940.0
12-23 8610.0
12-24 7463.85
12-25 6960.77
12-26 6435.45
12-27 5490.0
12-28 4552.0
12-29 6060.91
12-30 5694.55
12-31 5778.33

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index