It is formed by the union of three principal branches, which receive most of their water from melting snow and ice, and it occupies a typical glacial valley—straight, steep walled, and heavily timbered.
It thus provides a route from the Chitina Valley to Granite Creek, a westward-flowing stream about 20 miles (32 km) south of the Chitina, which occupies an interior basin in the ice fields of the Chugach Range.
B. Miller crossed the ice field between Yakataga beach and Granite Creek and made their way to the head of the Kiagna.
They saw evidence that the Native Americans knew this route to the coast and they found the stakes of the former prospectors on the Kiagna.
This time, they went around the east end of Granite Creek, and, instead of going back to Yakataga, they descended the Chitina and Copper rivers to the coast.