Pocket gophers are small, powerful, efficient digging machines whose activities are the subject of considerable argument. One pocket gopher will dig a half-mile or so of runway in a year. Some soil experts say this is good-say it helps to aerate the soil and allows faster penetration of water.
"On Controlling Pocket Gophers,"
Iowa Farm Science: Vol. 2
, Article 6.
Available at: https://lib.dr.iastate.edu/farmscience/vol2/iss10/6