Quick Answer
Flooding is primarily a dog-hunting tactic. The goal is to push gophers toward the surface where a hunting dog can catch them — that’s why Taco and I ran this step together. Without a dog on the yard, skip it. Go straight to trapping. The gopher will come back to repair any tunnel disturbance and that’s exactly when they hit the trap.
UC IPM notes that “pocket gophers can easily withstand normal garden or home landscape irrigation, but you can sometimes use flooding to force them from their burrows, enabling you to use a shovel or a dog to kill the rodent.” (Source: Baldwin, R.A. — UC IPM Pest Notes: Pocket Gophers, 2025)
The Gear
- Garden hose with shutoff nozzle
- Shovel
- Mud boots
- Rake for reshaping soil
- Marker flags
For Your Follow-Up Trapping Set
Basic Gopher Probe
Flooding reveals active tunnel branches — but you still need to probe to pinpoint the main run before setting traps. A dedicated soil probe makes that step fast and accurate.
Best for: Locating the exact tunnel position after flooding maps the network — saves you guessing when you transition to traps.
Shop Gopher Probe on Amazon →The Process
- Identify the freshest mounds and open one plugged entrance with a shovel.
- Insert the hose 1-2 feet into the run and start with moderate flow, not full blast.
- Watch nearby mounds for bubbling, collapse, or water seepage to map active branches.
- Mark active points and stop watering once flow returns at multiple exits.
- Let soil settle, then transition to traps — set via traps at the most active main run locations.
Bagger Pro-Tip
This only made sense for me because I had Taco. I’d run the hose, he’d work the yard, and we’d catch them as they surfaced. No dog? Don’t bother flooding — set your traps, cover the hole, and let the gopher come back to repair the damage. They always do. That’s when they hit.
Safety Warning
Avoid flooding near foundations, retaining walls, or slopes where water saturation can trigger soil movement.
Get the Gear
Flooding is reconnaissance — it sets up your trap sets. When you’re ready to close the job: