Ponds are much easier to manage when properly constructed. A prospective pond owner should contact a representative of the U.S.D.A., Natural Resources Conservation Service (NRCS), which is located in each county. The NRCS can make recommendations regarding location, design, and proper construction. The owner should also utilize a reputable contractor, (with references) that is familiar with design and construction of ponds which meet NRCS engineering specifications.
The information above came from the Alabama Wildlife and Freshwater Fisheries Division's booklet Sportfish Management in Alabama Ponds, which is available as a PDF.