There's probably local guys too, but you have to do your due diligence and check/double check refrences. Just because there are more dirt movers than true pond builders.
Or, you could hire a pond consultant that can work with a dirt mover who hasn't built a pond to ensure that it's built correctly. The pond consultant can also then make sure that there is cover in the pond for the particular species of fish you want, figure out an aeration system (if needed or required), etc., etc.
Building a pond actually is more detailed than you think. Correct bottom contour and slope, fish habitat, cover for forage fish, etc., etc.
It's more than digging a bowl, or damming up a ravine. Then the consultant can help with types of fish, sizes and quantities to meet your goals and fit in your budget. It's a lot less stressful if you have the pond planned out from start to finihs rather than get half way done and be wondering "what's next?".
