Traveling South from Navojoa on Mex15, you will see a Pemex gas station on your right (Los Toltecas).  This will be approximately 37 miles South of Navojoa and is your last chance to gas up before heading to the station.
Shortly after the Pemex at Los Toltecas, you will see a sign for Ejido Juan Escutia and a kilometer marker 91.  Take the first right after the Km 91marker and reset your trip odometer.
You will drive through Ejido Juan Escutia, then at 0.3 miles cross over an irrigation canal.
Continue on this road until 1.5 miles then turn Left, there will be fields on both sides of the road.
At 2.5 miles you will cross over another irrigation canal, continue straight and pass through Ejido Alvaro Obregon at 4.0 miles.  At the far side of this ejido you will go over a cattlegaurd.
Continue on this road and at 4.9 miles veer right, there are powerlines on the left side of the road.  Follow them and the road most traveled, at around 7.9 miles you will cross over another cattlegaurd.
Keep traveling forward, shortly after the cattlegaurd the road will curve back and forth through the powerline poles.  This road changes slightly every year so just relax and take the most traveled.  You will pass through Ejido Las Aguilas which doesn’t have a sign but is where the powerlines end.
On the far end of this ejido (town) there will be some more fields on both sides of the road and then at 11.2 miles there will be a white sign on the left side of the road that says “Bahia de Agiabampo es mas limpio …..” After this sign you will see Pitayal (cactus forest) on both sides of the road.
Continue forward until you reach Navopatia.  You will see a few houses and part of the estuary.  At 13.5 miles veer left.
Then at  13.7 miles veer right.  This is the road that leads into Navopatia Field Station.  You have arrived.
NAVOPATIA FIELD STATION IS OPEN FROM MID- DECEMBER THROUGH MID-MARCH
AFTER LEAVING MEX15, ROAD CONDITIONS ARE NOT OPTIMAL, HIGH CLEARANCE VEHICLES ARE RECOMMENDED; TRY NOT TO DRIVE THE ROAD AT NIGHT OR AFTER A RAIN.  ROAD CONDITIONS CAN CHANGE DAILY.
PLEASE SHOW RESPECT BY DRIVING SLOWLY THROUGH THE EJIDOS.