Page 44 - 1915, Springs of CA.

42 SPEINGS OF CALIFORNIA.

60 .miles in a direct line south of east from the mud volcanoes near
Imperial Junction.
A great fault extends southeastward through San Gorgonio Pass,
which is eastward from San Bernardino, and this fault is believed to
continue through Colorado Desert, where physiographic evidence of
its existence is buried by the valley alluvium. If it does extend
through the desert, it may have determined the presence of the small
area of volcanic rocks near the mud volcanoes, and hence they may
furnish evidence of more extensive geologic phenomena than the lava
knobs.
GLEN IVY HOT SPRINGS (RIVERSIDE 3).
West of the San Jacinto Range another fault has been traced along
the eastern base of the mountains that border Elsinore and Murrieta
valleys. Heated waters rise along this fault zone at three localities.
The most northern of these is at Glen Ivy Hot Springs, which was
formerly known as Temescal Hot Springs.
One principal spring, having a temperature of 102° and yielding
about 15 gallons a minute here issues at the mouth of a ravine in
which fractured granitic and porphyritic rocks are exposed. Small
warm springs issue at several other points for half a mile northward,
but only the one spring is improved. Its water is sulphureted and
slightly alkaline hi taste but is not unpleasant.
The springs were early known to local settlers, but for a number of
years they were in private hands, and more recently were the p'rop-
erty of an automobile club. In 1908 the place was opened to the
public. The improvements at that time consisted of a hotel con-
taining 10 or 12 rooms, a swimming pool, dancing hall, and tennis
court, all of which were situated in a grove overlooking the valley
land.
ELSINORE HOT SPRINGS (RIVERSIDE 5).
Many small hot springs formerly issued along the northeast side of
Elsinore Lake. In the early nineties, however, a canal was cut and
the water of the lake was conducted northward for irrigation, and
since that time most of the springs have ceased to flow. Hot sul-
phureted water is still obtained, however, from shallow wells. In
1888 a large bathhouse was built near the railroad depot; and in
1908 these baths were still supplied by water pumped from three
wells that were formerly springs. A large swimming plunge and tub
and mud baths were provided, while Lakeview Hotel, under the same
management, furnished accommodations for about 100 people.
Partial analyses of water from two of the wells at this resort are
tabulated on page 43.