This usually reliable perennial spring is often approached by a short off-trail hike from the Houston Brothers Trail and can also provide an overnight backpacking campsite area as well as providing a spring water source for treating.
This description provides the short 4WD driving route (now hiking route only) from FR139 on FR9616E to reach this spring area. From intersection of FR139 / FR9616E this is "official" out and back hiking route to perennial McFarland Spring and Backpack Camping Area. FR9616E is no longer legal for any motor vehicle access.
Check out the Official Route and Triplogs.
WARNING! Hiking and outdoor related sports can be dangerous. Be responsible and prepare for the trip. Study the area you are entering and plan accordingly. Dress for the current and unexpected weather changes. Take plenty of water. Never go alone. Make an itinerary with your plan(s), route(s), destination(s) and expected return time. Give your itinerary to trusted family and/or friends.