If you can address the ...

If you can address the comments outlined by Keith Pitman below, you will have a much better understanding of the causes of the well problem, the production potential of the existing wells and the possible alternatives for solving the problem which might include digging some new wells in locations that have better potential for sustained, long-term production.  After all, the objective of a project like this is not simply to re-dig the wells in the area (which might provide temporary relief), but rather to provide a long-lasting local solution to the region's water supply.