2017 Map of Tyonek D-6 SW

About this map

Hayes Glacier dominates the western reaches of this landscape in the Matanuska-Susitna Borough, where glacial ice gives way to the complex braided drainage systems of the Hayes River and Trimble River. These glacial-fed waterways move through a wilderness area defined by high-elevation contours and the persistent flow of Spring Cr. The mapping reflects a rugged terrain where natural forces remain the primary architects of the landscape, showing how the shifting ice of the glacier feeds the significant river systems that carve through the surrounding valleys. This 2017 survey documents the precise margins of these hydrological features, providing a baseline for understanding the environmental movement within this remote part of the Alaska range.