Page 130 - 1915, Springs of CA.

122 SPRINGS OF CALIFORNIA.

was ascribed by Kussell l to faulting along both sides of the valley,
subsidiary faulting having produced its minor features. The hot
springs that .rise in the valley are considered to furnish confirmatory
evidence of its fault origin.
The northernmost of the hot springs that are noteworthy are
found at the base of lava slopes on the west side of the canyon
of Bidwell Creek, about 1 mile north of Fort Bidwell. From five
vents within 6 or 8 yards of each other about 75 gallons of water a
minute is discharged, the highest recorded temperature being 108°.
In 1909 the water was conducted to a plunge in a small bathhouse
and was also used for irrigation and domestic supply.
On standing the water deposits a small amount of sulphur. The
following analysis shows that the water is characterized by primary
alkalinity and primary salinity and, to a small degree, by secondary
alkalinity. Tertiary alkalinity, though not fully reported, is impor-
tant. The softness of the water and its suitability for use in laun-
dries is recognized, and it is a good boiler water but is only fair for
irrigation.

Analysis of water/row main hot springs on Bidwell Creek, Modoc County, Cal.
[Analyst and authority, P. M. Eaton (1909). Constituents are in parts per million.]
38° C. (100° F.)
Properties of reaction:
47
0
0
42
11
58
By Reacting
Constituents.
weight. values.
78 3.39
Potassium (K) ...................................................................... 7.7 .20
3.7 .18
2.9 .24
( 2.8 .10
58 1.20
Chloride(Cl)..... .................................................................... 24 .69
Carbonate (CO3) .................................................................... 62 2.08
Silica (SiO2). ........................................................................ 65 2.15
304.1
Carbon dioxide (CO2) ............................................................... Present. Present.
2.8 .16

HOT SPRINGS NEAR SOUTHWEST SIDE OF UPPER LAKE (MODOC 11).
At points about 2 miles and 3 miles, respectively, north of Lake
City, hot water rises in meadowland that borders Upper Lake. The
quantity of flow and the temperature of the water are rather indefi-
nitely known, as the water rises in tule-grown areas. It has been
1 Russell, I. C., A geological reconnaissance in southern Oregon: U. S. Geol. Survey Fourth Ann.
Rept., pp. 449-450, 1884.