Top Discharges

Streamgauges reporting the most discharge on the Chehalis River

10 Day Trend

Discharge comparison for the highest gauges over the past 10 days

Expected Streamflow Ranges

Streamflow discharge range for this time of year

The Chehalis River ( shÉ™-HAY-lis) is a river in Washington in the United States. It originates in several forks in southwestern Washington, flows east, then north, then west, in a large curve, before emptying into Grays Harbor, an estuary of the Pacific Ocean. It was once much larger during the Ice Age when the tongue of the glacial ice sheet covering the Puget Sound terminated near Olympia and glacial runoff formed a large torrest of meltwater. This carved a large oversized valley that is much larger than the current river could have produced. The river's mouth was out near current ... Source: Wikipedia