Utah State University Extension
Townsend ground squirrels live in colonies and construct underground burrows that have a number of entrances. The burrows may be up to 6 feet deep. The squirrels generally enter their burrows to aestivate, escaping the late summer heat
Nelson, Mark, "Controlling Townsend Ground Squirrels in Beaver County, Utah" (2012). All Current Publications. Paper 1176.