My name is Wendy W***h, District Manager for T***a County Soil and Water Conservation District. Deb S********r from the Town of O***o forwarded on your email to me and ask that I follow up with you.
Unfortunately there is not a lot I can do in this situation. I would recommend that you talk with your neighbor and explain to him the problem that has been caused as a result of the new pond outlet. If he is willing to make a change than I can come out and evaluate the situation and see if I can propose a solution, however with that being said my recommendation would be made based on the most feasible course of action for the drainage. If however your neighbor is not willing to make a change then your only option would be to pursue this via an attorney.
Sorry I can't be more of a help, these are very difficult matters to resolve. If I can be of further assistance please let me know,
Wendy W***h, CPESC, CCA
T***a County SWCD
183 Corporate Drive
O***o, NY 12345