PBALK.] IDAHO. 181 
IDAHO. 
The chemical composition of the mineral springs of Idaho is so little 
known that they cannot be definitely classified beyond stating that 
thermal springs predominate. That warm and hot springs abound 
might naturally be expected, when the geological structure of the Ter- 
ritory is recalled. Granitic aud volcanic rocks prevail, and, in connec- 
tion with the mountain corrugation, present most favorable conditions 
for the development of hot and warm springs. Mr. G. F. Becker, in 
the Statistics and Technology of the Precious Metals (p. 53), 1885, 
speaking of Idaho, says that hot springs are thickly distributed 
through the granitic areas, and in many cases issue directly through 
the granite, although usually within a mile or two of the known vol- 
canic rocks, and that many of them are highly charged with alkalies and 
hydrogen sulphide. The list presented here has been made up largely 
from various maps. Mr. Albert Williams has also kindly given consid- 
erable information. Although few of the springs have been improved, a 
great many are used extensively for bathing, especially in the mining re- 
gions. The most widely known resort is at Soda Springs, near the bend 
of Bear Biver. None of the waters is at present used commercially. 
Mineral springs of Idaho. 
Name and looation. 
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1 
u 
5 
CO 
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1 
6 
1 
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| 
2 
s 
p. 
a 
® 
Character of the 
water. 
Remarks. 
Bruneau Hot Spring, Bruneau Valley, 
Owyhee County. 
Chalybeate Spring, near Spring Creek, 
of Henry's Fork, Oneida County. 
Given's Hot Springs, Snake River, 
near Reynolds, Owyhee County. 
Hot Creek, Idaho County, 20 miles 
northwest of Bonanza. 
Hot Creek, south of Snake River, 4 
or 5 miles below American Falls, 
Oneida County. 
Hot lakes, 20 miles south of Wash- 
ington, Idaho County. 
Sot springs : 
Five miles east of Boise City, 
Ada County. 
North of Fishing Falls, Alturas 
County, about 60 miles southeast 
of Boise City, 25 miles north of 
Snake River. 
Fifteen miles west of Ketchum, 
Alturas County. 
Near Duck River, about 15 miles 
south of Hailey, Alturas County. 
Three miles southwest of Idaho 
City, Boise County. 
On Salmon River, 15 miles south 
of Bonanza, Custer County. 
East side of Bear River, at south 
end of Gentile Valley, Oneida Co. 
On South Fork of Snake River, 8 
miles below Salt River, Oneida 
County. 
i 
i 
2 
70, 000 
2,000 

105 
Cold. 
98 
Unimproved, but used to 
small extent locally for 
bathing. 
},e 
15, 400 
( 90 ) 
< to > 
(212^ 
164 
Chalybeate, al- 
kaline, 8 u 1 - 
phureted, &c. 
Chalybeate 
) Improved and used as a 
i resort. 
6 
5,000 
115 
Sulphureted — 
Used locally. 
125 
(14$ 
9) 
V 
(3C 
Saline and sul- 
phureted. 
Do. 
