Overview Realtime Historical Map View
Heat Advisory
2026-08-06T23:00:00-07:00

* WHAT...Afternoon high temperatures of 89 to 94 degrees. * WHERE...Portions of northwest and west central Oregon and southwest Washington. * WHEN...Until 11 PM PDT this evening. * IMPACTS...Hot temperatures may cause heat illnesses.

South Santiam River At Waterloo, Oreg. 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 5533.33
01-02 5742.73
01-03 5046.36
01-04 5007.5
01-05 4900.83
01-06 5293.33
01-07 5053.33
01-08 4684.17
01-09 5033.64
01-10 5119.17
01-11 5230.0
01-12 5140.0
01-13 4842.73
01-14 5171.67
01-15 4747.5
01-16 4299.09
01-17 4703.08
01-18 4381.67
01-19 6038.46
01-20 6150.77
01-21 5995.83
01-22 5733.08
01-23 5495.0
01-24 5583.85
01-25 5740.0
01-26 5315.0
01-27 5191.54
01-28 4843.08
01-29 4810.0
01-30 4890.71
01-31 4689.29
02-01 4409.29
02-02 4059.29
02-03 3716.43
02-04 3567.14
02-05 3252.29
02-06 3170.15
02-07 3489.38
02-08 3256.17
02-09 3295.0
02-10 3102.14
02-11 2727.69
02-12 2946.43
02-13 3169.29
02-14 3603.08
02-15 3427.14
02-16 3194.29
02-17 3276.92
02-18 3326.15
02-19 3372.86
02-20 3435.71
02-21 3211.43
02-22 3165.71
02-23 3280.0
02-24 3548.57
02-25 3410.33
02-26 3103.38
02-27 3049.29
02-28 2918.57
02-29 2420.0
03-01 3194.29
03-02 2933.85
03-03 3045.29
03-04 2946.71
03-05 2784.5
03-06 2795.21
03-07 2549.43
03-08 2282.29
03-09 2550.86
03-10 2594.0
03-11 2683.71
03-12 2657.29
03-13 3030.86
03-14 3398.0
03-15 3554.29
03-16 3995.71
03-17 4065.71
03-18 3905.0
03-19 4306.0
03-20 3752.86
03-21 4235.33
03-22 4399.29
03-23 4032.67
03-24 3818.57
03-25 3618.67
03-26 3486.0
03-27 3419.33
03-28 3639.33
03-29 4109.33
03-30 4310.67
03-31 4295.71
04-01 3764.67
04-02 3524.67
04-03 3468.0
04-04 3412.67
04-05 3662.0
04-06 3695.71
04-07 4207.33
04-08 4719.33
04-09 3442.31
04-10 4692.67
04-11 4822.67
04-12 5057.14
04-13 4525.0
04-14 4125.0
04-15 3803.08
04-16 3556.15
04-17 3686.67
04-18 3436.15
04-19 3200.77
04-20 3237.69
04-21 3027.86
04-22 3020.71
04-23 2984.29
04-24 2890.0
04-25 3120.0
04-26 3229.29
04-27 3517.86
04-28 3537.86
04-29 3135.71
04-30 2912.14
05-01 3250.0
05-02 2889.29
05-03 2754.29
05-04 2830.0
05-05 2726.67
05-06 2916.0
05-07 3217.33
05-08 3142.14
05-09 2959.33
05-10 3184.29
05-11 2926.67
05-12 2724.0
05-13 2670.0
05-14 2823.08
05-15 3204.62
05-16 3412.14
05-17 2865.0
05-18 2284.67
05-19 2106.67
05-20 2062.86
05-21 1819.33
05-22 1936.67
05-23 1992.67
05-24 1912.67
05-25 1962.0
05-26 2040.0
05-27 2166.67
05-28 2212.27
05-29 2260.27
05-30 2231.6
05-31 2062.93
06-01 1941.6
06-02 1864.0
06-03 1841.33
06-04 1836.27
06-05 1907.36
06-06 2138.0
06-07 2112.29
06-08 1993.71
06-09 1763.47
06-10 1856.13
06-11 1989.43
06-12 2414.29
06-13 2320.0
06-14 2230.0
06-15 1820.8
06-16 1825.47
06-17 1708.13
06-18 1627.47
06-19 1592.29
06-20 1503.0
06-21 1510.14
06-22 1465.14
06-23 1478.0
06-24 1475.14
06-25 1423.0
06-26 1378.0
06-27 1345.86
06-28 1341.57
06-29 1298.71
06-30 1274.43
07-01 1195.14
07-02 1076.21
07-03 1022.93
07-04 1001.62
07-05 976.27
07-06 990.4
07-07 1000.93
07-08 969.64
07-09 978.64
07-10 975.4
07-11 966.57
07-12 941.15
07-13 934.14
07-14 920.87
07-15 920.0
07-16 930.46
07-17 927.27
07-18 929.79
07-19 919.14
07-20 920.67
07-21 914.6
07-22 912.0
07-23 914.07
07-24 921.93
07-25 922.87
07-26 913.47
07-27 908.8
07-28 909.4
07-29 908.73
07-30 911.47
07-31 914.13
08-01 903.15
08-02 905.5
08-03 899.13
08-04 897.8
08-05 922.4
08-06 941.0
08-07 942.36
08-08 952.77
08-09 954.31
08-10 959.08
08-11 943.93
08-12 943.64
08-13 960.46
08-14 953.0
08-15 956.57
08-16 948.62
08-17 962.25
08-18 965.42
08-19 952.92
08-20 953.0
08-21 949.15
08-22 946.31
08-23 932.0
08-24 938.77
08-25 940.38
08-26 953.29
08-27 957.57
08-28 974.71
08-29 997.43
08-30 980.43
08-31 982.69
09-01 1038.0
09-02 1200.93
09-03 1232.21
09-04 1270.79
09-05 1320.0
09-06 1341.36
09-07 1370.43
09-08 1378.29
09-09 1376.14
09-10 1401.21
09-11 1402.29
09-12 1401.57
09-13 1393.08
09-14 1373.57
09-15 1372.14
09-16 1383.08
09-17 1372.86
09-18 1411.43
09-19 1419.29
09-20 1400.71
09-21 1417.69
09-22 1388.57
09-23 1427.14
09-24 1425.71
09-25 1487.14
09-26 1505.0
09-27 1510.71
09-28 1582.86
09-29 1603.57
09-30 1786.15
10-01 1790.0
10-02 1785.38
10-03 1731.67
10-04 1685.38
10-05 1691.43
10-06 1633.71
10-07 1643.71
10-08 1538.0
10-09 1532.29
10-10 1540.21
10-11 1548.07
10-12 1624.43
10-13 1640.15
10-14 1643.71
10-15 1730.23
10-16 1750.92
10-17 1569.43
10-18 1748.0
10-19 1870.23
10-20 1774.85
10-21 2061.0
10-22 2477.92
10-23 2391.0
10-24 2023.79
10-25 1856.64
10-26 1771.77
10-27 1939.5
10-28 2064.08
10-29 2628.79
10-30 2718.79
10-31 2492.62
11-01 2837.69
11-02 2605.93
11-03 2659.46
11-04 2314.5
11-05 2785.25
11-06 2831.77
11-07 2911.77
11-08 2891.0
11-09 2590.92
11-10 2435.62
11-11 2476.31
11-12 2777.15
11-13 2696.31
11-14 2788.71
11-15 2904.29
11-16 3169.29
11-17 3479.23
11-18 3707.69
11-19 3863.85
11-20 4273.57
11-21 4235.71
11-22 4006.92
11-23 4100.83
11-24 3898.33
11-25 4123.33
11-26 4345.38
11-27 4630.83
11-28 4217.86
11-29 4439.29
11-30 4416.43
12-01 4170.71
12-02 4087.86
12-03 4288.46
12-04 4424.29
12-05 4451.43
12-06 4400.77
12-07 4296.92
12-08 4632.14
12-09 4561.43
12-10 4953.57
12-11 5065.71
12-12 4932.14
12-13 4131.67
12-14 3617.5
12-15 3627.69
12-16 3933.08
12-17 3940.0
12-18 4210.0
12-19 4486.67
12-20 4590.83
12-21 6249.23
12-22 6764.17
12-23 5986.15
12-24 5943.85
12-25 5600.77
12-26 5703.33
12-27 4962.73
12-28 5478.18
12-29 5902.5
12-30 5507.27
12-31 5920.0

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index