Thermal springs in the Boise River basin, south-central Idaho

Water-Resources Investigations Report 82-4006
By:  and 



The Boise River Basin, characterized by steep, rugged mountains and narrow river valleys, drains an area of about 2,680 square miles in south-central Idaho. Granitic rocks of the Idaho batholith predominate in the basin. Temperature of waters from thermal springs in the basin range from 33 degrees to 87 degrees Celsius, are sodium carbonate type and are slightly alkaline. Dissolved-solids concentrations are less than 280 milligrams per liter. Estimated reservoir temperatures determined by the silica and sodium-potassium-calcium geothermometers range from 50 degrees to 98 degrees Celsius. Tritium concentrations in sampled thermal springs are near zero and indicate these waters were recharged prior to 1954. Stable-isotope data are not conclusive insofar as indicating a source area of recharge for the thermal springs in the basin. Thermal springs discharged at least 4,900 acre-feet of water in 1981, and the associated convective heat flux is 11,000,000 calories per second. (USGS)

Additional publication details

Publication type Report
Publication Subtype USGS Numbered Series
Title Thermal springs in the Boise River basin, south-central Idaho
Series title Water-Resources Investigations Report
Series number 82-4006
DOI 10.3133/wri824006
Edition -
Year Published 1982
Language ENGLISH
Publisher U.S. Geological Survey, Water Resources Division,
Description iii, 28 p. :ill., map ;28 cm.