How big is the hunting area?

I think the only time you can hunt there is in the Autumn when they want people to help pick off the geese

From 2016 Beginning September 1 through September 24, 2016, Westmoreland County Parks will be open to hunters on a limited schedule. The County has participated in scheduled control programs for the past few years and recognizes that hunting still remains the most effective and efficient way to manage the resident goose population at their lakes. The County also participates in the US Fish and Wildlife Services “Geese Peace” program to further control the geese population at our County Parks. HUNTING HOURS AND LOCATIONS: TWIN LAKES PARK, GREENSBURG DAWN TILL 9AM (TUESDAYS AND THURSDAYS ONLY)

Only when they want hellmwith geese control