Page 50 - 1915, Springs of CA.

48 SPRINGS OF CALIFORNIA.
the creek at this point.1 Three springs, 84° to 88° in temperature,
here yield about 5 gallons a minute.
The water has long been used in rock-walled pools for bathing.
In 1888-89 a small hotel was erected and opened as a resort, but
heavy rains in the spring of 1890 washed out the railroad between
Deluz station and the main line at Oceanside and the property was
abandoned as a resort for a number of years. In 1908, however,
it was reopened as a camping and rest resort and was improved to
some extent.

SAN JUAN CAPISTBANO HOT SPRINGS (ORANGE 2).
Hot springs rise in San Juan Canyon, about 13 miles northeast
of San Juan Capistrano. Like most of the hot springs thus far
described, these also issue from granitic rocks and near the base
of the steeper slopes of a portion of the coastal ranges. Two main
springs, four minor ones, and several marshy patches are here
situated on the western side of the canyon on slopes near the creek.
The highest temperature recorded was 124°, and the total yield
was estimated at about 35 gallons a minute. Other warm springs
issue in a canyon half a mile westward. The water is slightly
sulphureted, but, like the other hot waters of this region, it is not
highly mineralized.

Analysis of water from main spring, San Juan Capistrano Hot Springs, Orange County,
Cal.
[Analyst, Oscar Loew (1876). Authority, Wheeler report. Constituents are in parts per million.]

49 0 to51°C.
(120° 1 o 123° F.)
Properties of reaction:
46
Secondary salinity ........................ . ................................... 0
0
54
Trace.
Tertiary alkalinity. . ............................................................ (? )
By Keacting
Constituents. weight. values.
Sodium (Na). ....................................................................... 89 3.89
Potassium (K). ..................................................................... Trace. Trace.
Trace. Trace.
Calcium (Ca). ....................................................................... Trace. Trace.
Magnesium (Mg). . .................................................................. Trace. Trace.
Sulphate (SO4).......... ............................................................ Trace.
Chloride (Cl) ........................................................................ 64 1.80
63 2.10
Silica (SiO2).. ....................................................................... 77 2.55
293
i Fairbanks, H. W., Geology of San Diego County: California State Mineralogist Eleventh Rept.,
p. 99,1893.