ATV Park Info and Maps
Free Walker Valley Trail Maps/GPS
Download the free DNR walker valley map to your phone with GPS capability to find where you are.
Avenza Offline Maps App- Recommended free map GPS that works for Apple and Android. Search "Avenza" in Google play/apple store. Sign up for free (or "click out" of the sign-in) and search for maps in the "store" by hitting the shopping cart or "+" then search "Walker Valley ORV". Click the red drop-pin and download that map (also free).
This uses the park map and allows GPS location. You can also record your trip by tapping the three little dots on the right.