The address for one of the observing areas is 2150 Green Lane Road, Green Lane PA 18054. Take Rt 29 North and turn left on Knight Road; it's a couple hundred yards down on the left. One important thing to note that parking lot is not paved. It's uneven in places so it is wise to drive slowly and use extra care. More importantly, that area is a staging area for horseback riders so it's important to watch your step. There is a PortaPotty in that parking lot as well but it is not lit up at night.
The address for the large parking area where we observe at Green Lane Park is 2298 Green Lane Rd but take note the entrance to that lot is not correctly displayed on some GPS's including google maps. The correct coordinates for the entrance to that parking lot are as follows: 40.336909,-75.484096 those coordinates should be entered instead of the address to avoid any confusion. This area is large and can accommodate a lot of us.
There is a row of porta potties located on the parking lot itself but if you must have running water, there are bathrooms with a sink, toilet and lights about 500 - 600 yards away just over the pedestrian bridge on the other side of the lake.
For more info, be sure to check out the Green Lane Park website.