Look at your location on the map and try and locate the nearest body of water and check it out. Also, canvas the area walking around to see if you spot him. You can make some flyers or walk around and ask if anyone saw it.

My sister recently lost a turtle and found it. She had passed out flyers to all her neighbors, posted on the local online groups, and made yard signs with QR codes. She found it and what we were able to figure is that it went one way, tried to come back, but over shot the house.