Overview Realtime Historical Map View

Cowlitz River Near Kosmos, Wa Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012
01-01 5104.55
01-02 5642.0
01-03 5451.82
01-04 5843.64
01-05 6053.0
01-06 6265.45
01-07 6954.55
01-08 6871.82
01-09 6589.0
01-10 6363.0
01-11 5660.0
01-12 5930.0
01-13 7942.73
01-14 7397.27
01-15 7470.0
01-16 6318.18
01-17 6015.83
01-18 5980.83
01-19 6736.67
01-20 6325.0
01-21 5870.0
01-22 6095.83
01-23 6001.82
01-24 6731.67
01-25 7331.67
01-26 6600.0
01-27 6151.82
01-28 6771.67
01-29 8625.0
01-30 7583.85
01-31 6844.62
02-01 7515.83
02-02 7649.17
02-03 7101.54
02-04 6236.15
02-05 6176.92
02-06 6356.67
02-07 8205.0
02-08 9690.91
02-09 7529.23
02-10 7130.83
02-11 6523.64
02-12 5736.67
02-13 5680.83
02-14 5719.17
02-15 5576.15
02-16 6480.83
02-17 5915.0
02-18 5307.5
02-19 4220.0
02-20 4800.77
02-21 4558.46
02-22 4337.69
02-23 4602.31
02-24 4993.85
02-25 4860.91
02-26 4646.67
02-27 4387.69
02-28 4151.54
02-29 4923.33
03-01 6270.0
03-02 6460.77
03-03 5826.92
03-04 5702.31
03-05 5499.23
03-06 6025.38
03-07 6470.77
03-08 5420.77
03-09 5477.69
03-10 6341.54
03-11 5927.38
03-12 5323.85
03-13 5438.46
03-14 6843.08
03-15 6203.85
03-16 6285.38
03-17 6073.85
03-18 5569.23
03-19 6460.71
03-20 6321.54
03-21 6872.86
03-22 6353.85
03-23 5572.14
03-24 5628.57
03-25 6020.71
03-26 6047.14
03-27 5882.86
03-28 6034.29
03-29 5936.43
03-30 5928.57
03-31 5484.62
04-01 5463.57
04-02 5328.57
04-03 5306.43
04-04 5151.43
04-05 5175.0
04-06 5502.31
04-07 5740.71
04-08 6165.0
04-09 6214.17
04-10 6612.14
04-11 6841.43
04-12 7057.69
04-13 6533.08
04-14 5815.0
04-15 5898.33
04-16 5582.5
04-17 5326.36
04-18 5406.67
04-19 5489.17
04-20 5729.17
04-21 6234.62
04-22 6116.15
04-23 6210.77
04-24 6204.62
04-25 6518.33
04-26 6270.77
04-27 6369.23
04-28 6705.38
04-29 6578.46
04-30 6525.38
05-01 6624.62
05-02 6351.67
05-03 6554.17
05-04 7490.77
05-05 8145.38
05-06 8403.08
05-07 8492.31
05-08 8388.33
05-09 7885.38
05-10 7694.17
05-11 7971.54
05-12 7872.31
05-13 7756.92
05-14 7704.55
05-15 8193.64
05-16 8516.67
05-17 8280.0
05-18 7829.23
05-19 7442.31
05-20 7370.83
05-21 7220.0
05-22 6906.15
05-23 6853.08
05-24 6731.54
05-25 6562.31
05-26 6370.0
05-27 6419.23
05-28 6544.62
05-29 6744.62
05-30 7102.31
05-31 6678.46
06-01 6463.85
06-02 6316.15
06-03 6181.54
06-04 6278.46
06-05 5689.17
06-06 5815.0
06-07 5650.83
06-08 5739.09
06-09 5814.17
06-10 5896.67
06-11 5860.83
06-12 5776.36
06-13 5418.18
06-14 5449.09
06-15 4808.75
06-16 4685.75
06-17 5072.5
06-18 4826.67
06-19 5049.09
06-20 4878.18
06-21 4933.64
06-22 4729.09
06-23 4602.73
06-24 4550.91
06-25 4511.82
06-26 4470.91
06-27 4494.55
06-28 4311.45
06-29 4493.64
06-30 4182.73
07-01 3848.18
07-02 3921.82
07-03 3735.45
07-04 3455.0
07-05 3208.33
07-06 3060.83
07-07 3139.09
07-08 3111.82
07-09 3043.64
07-10 2730.92
07-11 2880.91
07-12 2835.45
07-13 2790.0
07-14 2698.18
07-15 2613.64
07-16 2615.0
07-17 2578.18
07-18 2547.0
07-19 2358.18
07-20 2429.09
07-21 2377.27
07-22 2216.0
07-23 2227.27
07-24 2357.0
07-25 2204.55
07-26 2146.0
07-27 2118.0
07-28 1890.1
07-29 2101.0
07-30 2140.0
07-31 1945.56
08-01 1653.25
08-02 1478.22
08-03 1502.44
08-04 1685.67
08-05 1689.78
08-06 1552.44
08-07 1524.2
08-08 1692.5
08-09 1680.0
08-10 1686.25
08-11 1698.2
08-12 1604.63
08-13 1619.5
08-14 1717.25
08-15 1504.0
08-16 1617.14
08-17 1776.63
08-18 1821.43
08-19 1830.63
08-20 1511.38
08-21 1470.25
08-22 1414.71
08-23 1413.78
08-24 1464.0
08-25 1312.88
08-26 1066.33
08-27 1065.78
08-28 1091.33
08-29 1098.56
08-30 1170.8
08-31 1238.5
09-01 1215.3
09-02 1155.4
09-03 1429.7
09-04 1149.8
09-05 1140.4
09-06 1165.55
09-07 1363.27
09-08 1190.5
09-09 1084.09
09-10 1071.2
09-11 1211.6
09-12 1191.6
09-13 2299.78
09-14 2074.3
09-15 2013.27
09-16 2590.55
09-17 2057.8
09-18 2708.0
09-19 2484.6
09-20 2437.2
09-21 2530.0
09-22 1161.11
09-23 2236.8
09-24 2201.9
09-25 2175.7
09-26 3272.64
09-27 3138.18
09-28 3253.25
09-29 3369.17
09-30 3936.45
10-01 2887.5
10-02 2239.73
10-03 1720.82
10-04 1697.55
10-05 1409.42
10-06 1270.25
10-07 1185.67
10-08 1169.33
10-09 1382.33
10-10 1616.83
10-11 1493.5
10-12 1513.25
10-13 1572.75
10-14 1930.83
10-15 2573.64
10-16 2782.91
10-17 2557.75
10-18 2448.33
10-19 2563.45
10-20 3104.55
10-21 3900.91
10-22 3526.36
10-23 4953.64
10-24 3374.45
10-25 3303.09
10-26 2851.0
10-27 3541.82
10-28 3351.4
10-29 3789.36
10-30 5419.0
10-31 4719.0
11-01 4916.36
11-02 5199.09
11-03 4691.0
11-04 3844.55
11-05 6592.73
11-06 6150.0
11-07 6217.27
11-08 5938.18
11-09 4985.45
11-10 4367.27
11-11 4052.5
11-12 5298.33
11-13 5637.5
11-14 5673.92
11-15 5604.08
11-16 5805.38
11-17 4948.33
11-18 4574.17
11-19 4468.33
11-20 5926.5
11-21 6121.54
11-22 5858.33
11-23 4472.5
11-24 4427.5
11-25 4787.5
11-26 6739.23
11-27 6314.55
11-28 6485.83
11-29 6307.69
11-30 5633.85
12-01 5076.15
12-02 6030.77
12-03 5924.17
12-04 4976.31
12-05 5168.46
12-06 6406.67
12-07 6919.23
12-08 7356.92
12-09 7186.67
12-10 12599.23
12-11 11184.62
12-12 9343.85
12-13 7264.62
12-14 5920.0
12-15 4752.5
12-16 5045.45
12-17 5356.36
12-18 6377.27
12-19 7248.33
12-20 7211.82
12-21 8858.18
12-22 9117.5
12-23 7754.17
12-24 7019.17
12-25 6525.0
12-26 6200.91
12-27 6630.91
12-28 7339.0
12-29 5879.0
12-30 5403.0
12-31 5220.0

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index