per cent. (see Fig. 2). The grade above the canyon flattens
to 8.6 per cent. for 1,200 feet, then steepens gradually to
13.2 per cent. at the head. At various points along its course
the creek drops over low falls or short steep sections as much
as 15 feet high. Between them there are stretches from 200 to
400 feet long where the creek flows with a uniform grade, on
bed-rock or over only a few feet of gravel, and between low
confining walls 50 feet apart.

Glacial Features. At present the only glacial ice near
Wheaton Creek is a small glacier on the north side of King
Mountain at the head of one of the forks of Ferry Creek.
There is none within the drainage basin of Wheaton Creek.
Nevertheless, there are certain erosional and depositional
features that indicate the former presence of glacial ice.

The upland areas and mountains, up to 6,500 feet eleva-
tion, lack ruggedness. King Mountain is the only one rising
above that elevation and much of its ruggedness is due to the
steep-walled cirques on its northern flanks. Elsewhere the
valley-heads gradually steepen but do not terminate in large
cirques. Rock surfaces above the valley-bottom are smooth
and rounded and in places are free from any drift cover. On
the ridge to the west of Wheaton Creek and on top of the ridge
between Philippon Creek and the Turnagain, there are glaci-
ated rock surfaces on which the glacial striae trend north-
eastward. Most ridge tops, knolls and peaks up to 6,500 feet
are noticeably rounded.

The valley of Wheaton Creek south of the mouth of Alice
Shea Creek is straight, fairly steep-sided and almost trough-
like. The hanging relationship of several small tributaries
and the absence of prominent ridges running downto the valley-
bottom give it a typical glacial form.

The valley north of the mouth of Alice Shea Creek was
glaciated as well but in some sections not down to the level
of the present creek. Glaciated surfaces are seen on rock
bench remnants which have been correlated with the lowest
level and other bench remnants are covered with drift. Nev-
ertheless the canyon between Barrington's and Wheaton's camps,
and the canyon below the lowest rock bench level were not gla-
ciated. They are clearly the result of post-glacial stream
cutting.

The bottom of Turnagain River in the eastward-flowing
stretch near the mouth of Wheaton Creek is notable for its in-
numerable lakes. Many of them are only a hundred yards across,
but others may be a mile long or more. The valley-bottom is