426 STEPHEN R. CAPPS 
CHULITNA RIVER DRAINAGE 
Tokichitna Valley—Tokichitna River, a tributary of the Chu- 
litna, receives the discharge from two very large and one medium- 
sized glacier. The smallest of the three, at the head of the valley, 
is known as Little Tokichitna Glacier. In its lower part it is 
nearly a mile wide, and although most of its basin is unsurveyed 
the glacier has probably a length of at least 10 miles. For several 
miles above its terminus the surface of this glacier is so covered 
by moraine that no ice is visible, except along the lower edge where 
Fic. 3.—Glacier at the head of Granite Creek, and the rugged mountains between 
Kahiltna and Tokichitna glaciers. 
stream cutting is active. This ice tongue also differs from most 
valley glaciers in that its sides are not steep, and separated from 
the valley walls by a depression, even at its lower end. ‘The sides 
fit flush against the rock valley walls, and detritus from the walls 
and from steep tributary gulches moves directly out upon the sur- 
face of the glacier (Fig. 4). The terminal moraine has been removed 
almost as rapidly as deposited, and accumulations at the glacier 
end are small. Trees of considerable size grow only a few hun- 
dred feet in front of the ice foot, and directly in its path, so that 
the glacier cannot have retreated far for a long period of years, 
or if it has, it has readvanced an equal distance. 
aie tne 
