Lake Marburg is a 1300 acre lake in south central PA, in Codorus State Park. The day I went it was cloudy and windy, but the lake was surprisingly lacking in the strong winds normally present on large lakes. I had a very calm, relaxing paddle, and saw a lot of birds and wildlife along the way.
There were a fair amount of fisherman in larger boats (up to 20 hp), and I can imagine the lake gets pretty busy in warmer weather. There are lots of small coves and lake branches to explore and two small islands as well.
There are a fair amount of Candian geese, but I gave them plenty of space and had no problems with them. This was a great day trip to make, and highly recommend it to anyone within driving distance.
There are many launches available, at least five, at different points around the lake. Bathrooms, camping areas, picnicking areas and a marina are also available. There is also a swimming pool and boat rentals available in the summer.
Unpowered boats need a state boating sticker (from any state). There were no fees at the launches.
Coming from Harrisburg, I took 83 S to 15 S, then 94 to 116 into Hanover. More specific directions can be found on the DCNR website: www.dcnr.state.pa.us.
The DCNR website has great maps of the lake. www.dcnr.state.pa.us.