Page 353 - 1915, Springs of CA.

MINOR PERENNIAL SPKINGS. 333
such material, and it is said to be difficult to obtain solid founda-
tions for buildings at this place. It is said that men excavating in
a railroad cut on the line from Sisson eastward to McCloud found
ice interbedded with the gravel. The melting of large masses of ice
that were covered by glacial gravel may partly supply several of the
cold springs, especially those at the head of Mud Creek, which seem
to issue directly from glacial material.

GLACIER SPRING (SISEIYOTT 21).
Several large springs issue along the course of Sacramento River
near the base of Mount Shasta. Glacier Spring is a few feet below
the brink of the river canyon and one-third of a mile by zigzag trail
northeast of Shasta Springs station. It rises quietly in a circular
cemented pool about 8 feet in diameter and 4 feet deep, in a concrete
spring house. A 3-inch pipe leads down the slope to the railroad
station, and the overflow perhaps 50 gallons a minute- forms the
head of a stream that cascades down the slope near the trail. The
size of the stream is greatly increased by water which issues along
its course, so that where it enters Sacramento River the stream has a
winter flow of perhaps 6 or 8 second-feet.
KEYSTONE SPRING (SISEIYOTT 20).
Keystone Spring rises on the plateau on the eastern side of the
canyon of Sacramento River, a short distance north of Glacier Spring.
Its water has been piped to a tank and used for a domestic supply
at Shasta Resort, which is situated south of the spring, near the
canyon edge.
Both Glacier Spring and Keystone Spring issue from crevices or
fissures in the lava at the southern border of the plateau that ex-
tends southward from Mount Shasta, and both are probably sup-
plied by water derived from melting snow on the higher slopes.

MINOR PERENNIAL SPRINGS.
DISTRIBUTION.
There are in the State many perennial springs of essentially surface
origin that are well known to prospectors and other travelers and are
of sufficient importance as watering places to have received names.
Many of these are on well-traveled roads, but by far the greater
number are in less known regions and are not easily accessible.
In the northern part of the Sierra and in the Siskiyous and the
northern Coast Ranges springs are numerous, but as there are also
many streams in these well-watered regions the springs are of rela-
tively little importance, though some of them supply roadside
watering troughs. In the arid parts of the State, especially on the
southwest side of San Joaquin Valley and in the eastern and south-