Alder (Al-duhr), village (1990 pop. 125), Madison co., SW Mont., 50 mi/80 km SSE of Butte, and on Ruby R. at confluence of Alder Creek. RR terminus. Irrigated agr. crops (potatoes, vegetables, alfalfa; sheep, cattle). Browns Gulch Mining Dist. to SE. Ruby Range to W, Ruby R. Reservoir to S. Parts of Beaverhead Natl. Forest to NE and SE. Laurin and Robbers Roost to NW.