I'd go to the local NRCS office and ask them for a list of pond builders. Then with list in hand, ask them if they were to give 5 or 6 contractors a call for a quote for a pond at their own house, who would be at the top of their list? That should get you pointed in the right direction

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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).