Lake Needwood is in Montgomery County .. It's not far from the shady grove subway station... It's been a while since I've been there but there is still boat access... I've had beter luck at Black hills(sorry don't remember the name of the lake), and it's also boat accessible, with great crappie fishing among others.. It's great when the weeds come up . When that happens, work the weed edges in the evenings..

Best of luck to you !