"Brings in storm water" concerns me. The amount of water that it brings in might make it a catch basin in a flow through pond. If you are catching overflow from city streets, it will be hard to manage the water quality. Is the city overflow pipe the only source of water?
yes as far as I know it is the only source. we do have a well for our house. I dont know if there is some sort of spring feeding it. the guy we had do the estimate said it was at the water table.
