University of California Cooperative Extension
Ground squirrel burrowing can damage tree root systems as well as irrigation systems, resulting in major erosion problems. Effective management depends on understanding the life cycle and behavior of the animal.
It’s somewhat like the obnoxious uncle in the family who shows up during holiday festivities; you know it’s going to happen, but you definitely don’t appreciate the appearance when it does.
Compare that unwelcome holiday company to ground squirrels in nut orchards that show up to feast on crop leftovers (as well as in nearby fruit, vegetable, and grain farm fields). Within the tree nut industry, ground squirrel burrowing can damage tree root systems (and irrigation systems) resulting in major erosion problems. Where there are lots of large burrow openings, there are lots of hazards for both workers and equipment.