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Montana Geothermal Sites: Brooks
SUMMARY INFORMATION:
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| AKA: Brooks Warm Springs Location: N 47.219 W 109.4733 Nearest town: 10 miles N of Lewiston County: Fergus Depth: Spring Temperature: 20° C, 68° F Flow: 72,000 gpm, 272,520 L/min TDS: 620 (mg/L) Site ID: MGEOT050 LOCATE AND VIEW VIA NRIS DIGITAL MAP LOCATOR: Allows resizing of topos and access to aerial photographs. |
CHEMISTRY (ppm) Site name: BROOKS Temp, C: 20.0 Sodium 3.6 Potassium 1.4 Calcium 114 Magnesium 39.0 Iron -0.01 Lithium 20.0 SiO2 10.7 |
The Brooks warm springs has an significant resource potential because of the high flow volume (270,000 L/min). The low temperature (20° C) has stymied development. Current usage is strictly agricultural, but advance heat exchangers could produce significant direct heat.

