 Elevations within the open valley itself range from about 6,150 to 7,100 feet (1,875 to 2,165 m.) Four creeks, North Creek, Middle Creek, Squirrel Creek, and South Creek flow through the valley.They all converge as they flow eastward; eventually combining into one at the valley's eastern end as the North St. Charles River, which flows into the St. Charles River southeast of Beulah and drains into the Arkansas River just west of Vineland.Due to its location along the east-facing foothills of the Wet Mountains, Beulah is prone to significant orographic enhancement of precipitation in the form of heavy cold-season snowfall as well as significant rain in warm months mostly (in the latter case) due to effects of the North American Monsoon.