Tres Alamos Wash, anephemeralstream tributary to theSan Pedro River, inCochise County, Arizona. It runs southwesterly to meet the San Pedro River, across the river from the former settlement ofTres Alamos, Arizona. Tres Alamos Wash passes east and northeastward between theLittle Dragoon Mountains andJohnny Lyon Hills to where it arises in a valley east of those heights and west ofAllen Flat and theSteele Hills. It has its source at32°07′45″N110°02′59″W / 32.12917°N 110.04972°W /32.12917; -110.04972.[1]
Tres Alamos Wash, was part of the route of a 19th-century wagon road, called theTucson Cutoff betweenNugent’s Pass and the San Pedro River.[2][3][4]
32°03′51″N110°20′07″W / 32.06417°N 110.33528°W /32.06417; -110.33528