Overview Realtime Historical Map View

Yakima River Above Ahtanum Creek At Union Gap, 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 2341.82
01-02 2550.0
01-03 2444.0
01-04 3029.0
01-05 2467.78
01-06 3094.0
01-07 3242.0
01-08 3112.0
01-09 2953.0
01-10 2745.0
01-11 2485.0
01-12 2390.0
01-13 2395.0
01-14 3163.64
01-15 3240.91
01-16 3110.91
01-17 3055.83
01-18 2915.0
01-19 3044.17
01-20 2948.33
01-21 2778.18
01-22 2845.0
01-23 2730.91
01-24 2723.33
01-25 2787.27
01-26 2879.09
01-27 2781.54
01-28 2849.17
01-29 2979.23
01-30 2832.14
01-31 2889.29
02-01 3140.77
02-02 3606.15
02-03 3381.43
02-04 3287.14
02-05 3490.0
02-06 3700.83
02-07 4350.0
02-08 5417.0
02-09 4633.33
02-10 4410.0
02-11 4313.0
02-12 4161.82
02-13 3766.67
02-14 3635.0
02-15 4376.15
02-16 4440.0
02-17 3835.83
02-18 3633.33
02-19 3370.77
02-20 3317.5
02-21 2993.85
02-22 2924.62
02-23 3913.85
02-24 3646.92
02-25 3254.17
02-26 3070.77
02-27 3037.14
02-28 2941.43
02-29 3972.5
03-01 2793.85
03-02 3470.71
03-03 3500.71
03-04 3281.43
03-05 3258.57
03-06 3290.71
03-07 3980.0
03-08 3767.14
03-09 3572.14
03-10 3797.86
03-11 3827.14
03-12 3607.86
03-13 3462.14
03-14 3615.71
03-15 3723.57
03-16 3890.71
03-17 4011.43
03-18 3932.14
03-19 4650.0
03-20 4735.71
03-21 4889.33
03-22 5051.43
03-23 4614.67
03-24 4577.33
03-25 4722.67
03-26 5105.33
03-27 5249.33
03-28 5407.33
03-29 5028.67
03-30 4740.0
03-31 4705.0
04-01 4623.33
04-02 4498.0
04-03 4508.0
04-04 4616.67
04-05 4656.67
04-06 4471.43
04-07 4717.33
04-08 4988.67
04-09 4716.15
04-10 5224.0
04-11 5265.33
04-12 5656.43
04-13 5556.43
04-14 5500.71
04-15 4791.54
04-16 4566.15
04-17 4095.83
04-18 4446.92
04-19 4672.31
04-20 5097.69
04-21 5645.71
04-22 5715.71
04-23 5845.0
04-24 6234.29
04-25 6937.69
04-26 6752.86
04-27 6743.57
04-28 6761.43
04-29 6707.86
04-30 6333.85
05-01 6249.33
05-02 6153.57
05-03 6111.43
05-04 6571.33
05-05 6894.0
05-06 7451.33
05-07 7458.67
05-08 7182.14
05-09 7054.0
05-10 6447.86
05-11 6845.33
05-12 7011.33
05-13 6929.33
05-14 6543.08
05-15 6736.67
05-16 7113.08
05-17 8662.86
05-18 7576.67
05-19 7652.14
05-20 7307.14
05-21 7099.29
05-22 6883.33
05-23 6872.67
05-24 6646.0
05-25 6544.0
05-26 6490.67
05-27 6455.33
05-28 6378.67
05-29 6196.0
05-30 5974.0
05-31 5710.0
06-01 5608.67
06-02 5248.57
06-03 5590.0
06-04 5853.33
06-05 5786.43
06-06 5992.86
06-07 6034.29
06-08 6208.57
06-09 6125.33
06-10 6092.67
06-11 6064.67
06-12 6028.57
06-13 5670.0
06-14 5346.43
06-15 4948.0
06-16 4856.67
06-17 4724.67
06-18 4666.67
06-19 4755.0
06-20 4752.86
06-21 4684.29
06-22 4699.29
06-23 4760.0
06-24 4793.57
06-25 4742.14
06-26 4505.71
06-27 4317.14
06-28 4182.86
06-29 4097.14
06-30 4099.29
07-01 4253.57
07-02 4188.57
07-03 4050.0
07-04 4007.69
07-05 3983.33
07-06 3910.67
07-07 3787.14
07-08 3785.0
07-09 3804.29
07-10 3882.0
07-11 3938.57
07-12 3804.29
07-13 3773.08
07-14 3660.77
07-15 3632.86
07-16 3613.08
07-17 3588.57
07-18 3664.62
07-19 3621.43
07-20 3606.43
07-21 3524.29
07-22 3473.08
07-23 3425.38
07-24 3495.0
07-25 3431.43
07-26 3475.0
07-27 3448.57
07-28 3417.86
07-29 3415.0
07-30 3423.08
07-31 3366.43
08-01 3375.0
08-02 3404.62
08-03 3427.86
08-04 3415.71
08-05 3414.29
08-06 3377.86
08-07 3372.14
08-08 3430.77
08-09 3409.23
08-10 3440.0
08-11 3434.29
08-12 3413.57
08-13 3465.38
08-14 3432.86
08-15 3412.86
08-16 3436.92
08-17 3461.67
08-18 3425.0
08-19 3374.62
08-20 3353.08
08-21 3366.92
08-22 3294.62
08-23 3313.57
08-24 3302.5
08-25 3240.0
08-26 3267.14
08-27 3232.14
08-28 3167.14
08-29 3162.14
08-30 3119.29
08-31 3063.85
09-01 2930.71
09-02 2847.14
09-03 2837.86
09-04 2784.29
09-05 2740.71
09-06 2720.0
09-07 2769.29
09-08 2752.86
09-09 2748.57
09-10 2695.0
09-11 2675.71
09-12 2666.43
09-13 2623.85
09-14 2588.57
09-15 2557.86
09-16 2546.92
09-17 2510.0
09-18 2487.86
09-19 2465.71
09-20 2444.29
09-21 2413.85
09-22 2363.57
09-23 2371.43
09-24 2366.43
09-25 2397.86
09-26 2382.86
09-27 2367.14
09-28 2307.14
09-29 2269.29
09-30 2326.92
10-01 2247.5
10-02 2150.0
10-03 2073.33
10-04 2031.54
10-05 1987.14
10-06 1987.86
10-07 1977.86
10-08 1942.86
10-09 1924.29
10-10 1948.5
10-11 1999.23
10-12 2004.62
10-13 1936.15
10-14 1913.85
10-15 1995.83
10-16 1991.67
10-17 1836.15
10-18 1653.85
10-19 1599.17
10-20 1581.67
10-21 1775.38
10-22 1906.92
10-23 2279.23
10-24 2100.77
10-25 1990.0
10-26 1825.0
10-27 1925.38
10-28 1899.17
10-29 2009.23
10-30 2061.54
10-31 2080.0
11-01 2201.67
11-02 2226.15
11-03 2094.17
11-04 2034.62
11-05 2005.38
11-06 2496.67
11-07 2350.83
11-08 2182.5
11-09 2090.0
11-10 2020.83
11-11 1966.67
11-12 1908.33
11-13 2187.5
11-14 2480.77
11-15 2540.0
11-16 2534.62
11-17 2270.91
11-18 2192.5
11-19 2134.62
11-20 2259.29
11-21 2442.86
11-22 2387.69
11-23 2201.54
11-24 2126.92
11-25 2211.54
11-26 2871.67
11-27 2800.77
11-28 2667.86
11-29 2725.71
11-30 2659.29
12-01 2290.0
12-02 2282.31
12-03 2619.17
12-04 2313.85
12-05 2292.14
12-06 2290.0
12-07 2499.23
12-08 2492.86
12-09 4081.43
12-10 5020.71
12-11 4877.14
12-12 4697.14
12-13 3597.69
12-14 3220.0
12-15 2863.85
12-16 2938.46
12-17 3099.17
12-18 3435.83
12-19 3075.83
12-20 3141.67
12-21 3275.0
12-22 3438.33
12-23 3326.67
12-24 3025.83
12-25 2892.5
12-26 2822.0
12-27 2679.09
12-28 2707.27
12-29 2675.83
12-30 2769.09
12-31 2628.33

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index