Greenfield lake used to be a show place way back when. Then the City of Wilmington just gave up on it. It's a pretty dangerous place to be now with the rundown neighborhoods around it. I can remember reading about at least one dead body being found around the the lake. I have seen gangs of people hanging out "so to speak" around there. The condition of the lake has alot to do with this type of activity. When the lake was the center piece of Wilmington and events were held there on a regular basis money was made and used to maintain the lake. Yes runoff is part of the problem and neighbors around the lake need to control what comes out of their yards and into the lake better, we have heard this for years. I personally think a lack of pride in a place that holds such beauty not to mention a rich history for the City of Wilmington is pox on the whole city. The City and the County governments should get together and clean the lake up. Then they should begin to plan events in the park again. When you bring back decent people to the area that tends to make others want to come and see how good and fun the Lake and the grounds around it can be. I guess my point is clean up the water run off the riff-raff and bring back what once was only better.