the pack area

I went to catch the early season stocking at the Wallenpaupack river delayed harvest section all to find out they cancelled and posted that cancell the day of the stocking, not the day before. Oh well, right? restocking march 16th aaaaaaah! So here is a question for the locals here at lake wallenpaupack. When do the walleye go up the river to spawn and do they hit lures when in the river? I can guess close to it when the fish and game put nets up to catch them to get eggs from them.
T.I.A.