Page 254 - 1915, Springs of CA.

236 SPRINGS OF CALIFORNIA.

metamorphism between the granitic rock on the east and the slate
that is exposed for a couple of miles westward.

GLEN ALPINE SPRINGS (ELDORADO 4).
Glen Alpine Springs are reached by road 7 miles southward from
Tallac, a resort at the south end of Lake Tahoe. The springs are
said to have been discovered in 1867 by Mr. N. Gilmore, hence the
place is sometimes known as Gilmores Glen Alpine Springs. The
property has been conducted as a mountain resort since the eighties.
In 1909 accommodations for 100 guests were provided in cottages
and tents that were grouped beside Glen Alpine Creek, in a little
flat that is bordered by steep, rocky slopes.
The main spring rises near the center of the flat, in a protecting
spring house, and forms a convenient and valued drinking place.
The water is cold and strongly carbonated and deposits some iron
along its overflow channel. The following analysis shows it to be an
alkaline water, with a rather high content of iron and aluminum:
Analysis of water from mainspring, Glen Alpine Springs, Eldorado County, Cal.
[Analyst and authority, Winslow Anderson (1888). Constituents are in parts per million.]
Temperature. ..................... . ............................. 4°C . (40° P.)
Properties of reaction:
19
0
0
26
55
150
By Reacting
Constituents. weight. values.
382 16.61
Trace.
Calcium (Ca) ...................... . ........................................ 329 16.44
49 4.04
Iron (Fe).......................... _.__............................................. 15 .53
13 1.44
Sulphate (SO*).. ................... ........................................ 49 1.03
Chloride (Cl)........ _.__............._..........._...__.._..._..._.................. 214 6.03
Carbonate (CO3) .................................................................... 917 30.56
Metaborate (BO2) ..................... . ........................................ Trace.
Silica (SiO2).......... .............................................................. 43 1.42
2,011
Carbon dioxide (CO2) ............ . . ........................................ 1,177 53.50
The water was bottled in small amount for one or two summers, but
it was not found suitable for the purpose, possibly because of the iron
content.
Another carbonated spring, that is of somewhat greater flow than
the main one, rises beside the spring house, but it has not been im-
proved. Both it and the main spring apparently issue from a crev-
ice in the granitic rock beneath the shallow alluvium of the flat. Seep-
ages in the creek bed 150 yards eastward have iron stained the stream
gravel, and carbonated water probably rises at that place also.