2023 Map of Castle Peak OE N

About this map

Canada defines the northern boundary of this high-altitude landscape in the Cascade Range, as recorded in this 2023 U.S. Geological Survey topographic study. This area, located near the international border in northern Okanogan County, is characterized by a dense network of high-elevation streams and drainage basins that feed into larger alpine valleys. The hydrography reflects the complex glacial and seasonal runoff patterns typical of this portion of Washington. While largely devoid of named human settlements or structures on this specific sheet, the map provides a precise layout of the natural terrain and water features that have shaped the land's use for resource management and border security. Researchers can trace the intricate relationship between the northern border and the headwaters that flow south from the international line.