A typical prairie-dog burrow system has two entrances, is ca. 1-3 m deep, ca. 15 m long, and has a diameter of 10-13 cm. Each burrow system mixes ca. 200-225 kg of soil, much of it deposited as mounds around the entrances, with 50-300 burrow entrances per hectare (Whicker and Detling, 1988).300 systems occurred per hectare, with 200-225 kg of soil mixed per each system, then each hectare occupied undergoes 60,000-67,500 kg of soil mixing by prairie dogs.
Considering that prairie dogs currently occupy only about 1.5% of the pre-Contact range, it seems safe to say that an enormous zoogeomorphic influence on the hydrology of the Great Plains region was removed by efforts to eradicate prairie dogs.