Page 245 - 1915, Springs of CA.

CARBONATED SPRINGS. 227

This lava overlies slates that probably furnish the saline constituents
of the several carbonated springs of the locality.

CARBONATED SPRING NEAR CASTLE CREEK (SHASTA 5).
A small carbonated spring rises near the west edge of Sacramento
River about three-fourths of a mile south of Castle Rock Springs and
60 yards below the mouth of Castle Creek. It has been protected by
a joint of tile pipe and forms a local drinking spring. Like the main
spring at the Castle Rock group, its water tastes distinctly sulphureted
as well as carbonated, and hence it is often spoken of as a sulphur
spring.

CARBONATED SPRING IN HOT SPRING VALLEY (PLUMAS 2).
A carbonated spring issues in Hot Spring Valley about one-haJf mile
west of Drake Hot Springs (Plumas 4, p. 142) that is of interest both
because of its position and its amount of flow. The spring is in
meadowland a few yards north of Warner Creek and yields about 8
gallons a minute of moderately carbonated water. It has been pro-
tected by a board curb and a log fence, and its water is occasionally
used for drinking but is too warm (83°) to be palatable. Bubbles
that are probably of carbon dioxide continually rise in the pool, and
the water deposits considerable iron, but it does not taste very
noticeably mineralized.

CARBONATED SPRING NORTH OF SOUPAN HOT SPRINGS (SHASTA 14).
About 1J miles north of Soupan Hot Springs (Shasta 15, p. 141)
there is a carbonated spring that was used as a drinking spring
when the sulphur deposits at those springs were being prospected,
but lately it has not been often visited. Like the carbonated spring
in Hot Spring Valley (Plumas 2), it is of interest, however, in con-
nection with the hot springs near by, and its presence indicates that
much of the bubbling at Soupan Hot Springs and at Bumpass Hot
Springs (Shasta 16, p. 140) is caused by carbon dioxide.1
CARBONATED SPRINGS ON SPANISH CREEK (PLUMAS 14).
At the north end of the Sierra Nevada, in Plumas County, there
are a number of carbonated springs, those best known being beside the
road between Quincy and Greenville, where lime carbonate has been
extensively deposited at two localities. The southern locality is on
the eastern side of the canyon of Spanish Creek, about 10 miles by
i A "cold soda lake" is indicated on some early maps of this locality, its position being shown about 1
mile north of Bumpass Hot Springs. Such a lake was not found when the locality was visited in 1910
and was not known to several people who are familiar with the locality. It is possible that conditions
have changed since the early maps were made and that the carbonated spring north of Soupan Hot Springs
is near the place indicated. The activity at Lassen Peak, beginning May 30,1914, indicates that the
positions of the springs on its slopes have varied in the past.