MLRA 43 - Northern Rocky Mountains Idaho, Montana, Oregon, Washington, and Wyoming 282,650 km2 (109,130 mi2)

Water:
Moderate precipitation and many perennial streams and lakes provide ample water. Streams and reservoirs supply water to adjoining MLRA's for irrigation and other uses. Springs and shallow wells in the valleys provide water for domestic use and for livestock. Elsewhere, ground-water supplies are small and mostly untapped.

12/16/98