Channel centerline for the Nehalem River, Oregon in 2005

The Tillamook Bay subbasins and Nehalem River basins encompass 1,369 and 2,207 respective square kilometers of northwestern Oregon and drain to the Pacific Ocean. The...蒂拉穆克湾子流域（Tillamook Bay subbasins）与内哈勒姆河流域（Nehalem River basins）分别坐落于俄勒冈州西北部，流域面积分别为1369与2207平方公里，最终均注入太平洋。