Water in the Yakima River is rising as warm spring weather is melting snow in the mountains and a weather system moving across the state is bringing rain.
The National Weather Service forecasts the Cascades will receive as much as an inch of rain on Friday with more expected over the weekend.
The river is expected to crest at 9.64 feet at Kiona, the closest depth gauge to the Tri-Cities, by Monday, well below flood stage which is 13 feet.
Some areas along the river, upstream from the Tri-Cities, Benton City and Prosser, may experience some minor flooding.
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Water levels are expected to begin dropping by Tuesday.