Page 291 - 1915, Springs of CA.

SULPHUE SPEINGS. 271
deep. A small pipe and faucet furnish an outlet from a point about
3 feet below the surface, but the yield is only about 1 gallon a minute
of water that had an observed temperature of 67° in the reservoir.
The spring was known to the Spaniards in the early days and is
still used to slight extent for drinking. Bubbles of gas continually
rise in the reservoir, but the water is only faintly sulphureted. The
spring is situated on a gentle alluvial slope at the mouth of a drainage
wash, between hills of sedimentary rocks that are probably of Tertiary
age.
In connection with the Mayhew Spring, Warm Springs (Alameda
3, p. 80), which have been described among the hot springs, may be
mentioned, as they are along the same range of hills although about 6
miles southeastward. They are also faintly sulphureted but are
named and best known as Warm Springs. There are other sulphur
springs, described already (see p. 208), in Alum Rock Park, about
18 miles southeast of Mayhew Spring. At these three localities the
warm sulphur water emerges along the front of hilly slopes where a
fault has been traced, and the springs seem therefore to be closely
related to this structural break.

SULPHUR SPRING ON CROW GREEK (STANISLAUS 1).
A few sulphur springs of small flow issue along the stream channels
on the northeastern border of San Joaquin Valley. One of these is
situated on Crow Creek, about 10 miles west of Newman, but it has
not been developed and is of little importance.

SULPHUR SPRINGS ON ORES TIME A CREEK (STANISLAUS 2).
About 8 miles southwest of the sulphur spring on Crow Creek
(Stanislaus 1) two other sulphur springs that have only a slight flow
issue from the banks of Orestimba Creek. Like the one farther
northeast, they have not been used and are unimportant.
The rocks that border this portion of San Joaquin Valley consist
of gravels and finer sediments, probably of Tertiary age.

HILLYDALE SULPHUR SPRING (SANTA CLARA 6).
A small sulphur spring is situated on property known as Hillydale,
about 4J miles south of the reduction works of the New Almaden
quicksilver mine, or 20 miles by road southward from San Jose.
The spring is on the western bank of a stream, 200 yards from the
house on the place, and yields about one-half gallon a minute of
moderately sulphureted water. The following analysis indicates a
primary-saline, secondary-alkaline water whose total mineral content
is small.