Waterhole Count On July 5th & 6th, Bighorn Institute conducted a waterhole count in the northern Santa Rosa Mountains (NSRM). Waterhole counts for bighorn sheep are conducted in extreme heat conditions of summer when sheep are reliant on drinking water. Since bighorn sheep can go 3 days without drinking water in over 100 degree temperatures, counts are conducted over a 2-3 day period with the thought that all of the sheep in the area should drink at some point during that t