Yakima River Above Ahtanum Creek At Union Gap, Wa Realtime Data
YAKIMA RIVER ABOVE AHTANUM CREEK AT UNION GAP, WA
Realtime Data • Report • Conditions
2,680
Discharge (cfs)
41.2
Gauge Height (ft)
Streamflow discharge was last observed at 2,680 cfs, and a gauge height of 41.15 feet.
With the
% decrease since yesterday,
the streamflow average over the past 10 days is 2,617 .
Weather today, Tomorrow,
The river is regulated by several dams, including the Cle Elum Dam and the Bumping Lake Dam. Seasonally, the river experiences high flows in the spring and early summer due to snowmelt, while low flows occur in the late summer and fall. Tributaries that contribute to the river include the Naches River and the Tieton River. Interesting facts about the hydrology of this area include that the river is a popular destination for fly fishing and supports a diverse range of fish species, including rainbow trout, bull trout, and Chinook salmon.
July 12, 2026
| Elevation | 938.0 ft |
| Last Updated | |
| Gage height, ft | 41.15 ft |
| Streamflow, ft³/s | 2680.0 ft3/s |
| Specific conductance, water, unfiltered, microsiemens per centimeter at 25°C | 159.0 uS/cm @25C |
| Dissolved oxygen, water, unfiltered, mg/L | 15.0 mg/l |
| Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 ±2.5°, formazin nephelometric units (FNU) | 44.3 FNU |
| Temperature, water, degC | 5.0 deg C |
| Percent of Normal | 71% |
| Year Over Year Average | 3,800 cfs |
| 24hr Flow Prediction | cfs |
| Maximum Recorded | 30,300 cfs |
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