The Nehalem River is a river on the Pacific coast of northwest Oregon in the United States, approximately 119 miles (192 km) long. It drains part of the Northern Oregon Coast Range northwest of Portland, originating on the east side of the mountains and flowing in a loop around the north end of the range near the mouth of the Columbia River. Its watershed of 855 square miles (2,210 km2) includes an important timber-producing region of Oregon that was the site of the Tillamook Burn. In its upper reaches it flows through a long narrow valley of small mountain communities ... Source: Wikipedia
Maximum discharge on the river today is recorded at the Nehalem River Near Foss with a streamflow rate of 95.4 cfs. However, the deepest point on the river is located at the Nehalem River Near Vernonia reporting a gauge stage of 3.63 ft. This river is monitored from 2 different streamgauging stations along the Nehalem River, the first of which is perched at an elevation of 681 ft, the Nehalem River Near Vernonia .