With a 12 ft high dam,12 ft wideat top, 3/1 slope on front, and 4/1 slope on back with 3 ft deep core trench you are looking at about 7600 yds of dirt to build the dam. Generally it's best to get a price per yard up front and have a fixed price agreement with contractor. I paid 1.30 $ per yard last year when I had a 20,000 yd dam built. If you plan on driving across the dam 12 ft is minimal. You may want to go wider if that is the case. Good luck.


The road goes on forever and the party nevers end...............................................