Patapsco state park is a nice state park located about 30 minutes from the harbor.
There is als the Millersville KOA which is also about 30 minutes away.
If you're coming from the north there is Bar Harbor RV park. Which is a little further about 40 minutes away.
19'Duramax w/hips, 2022 Alliance Paradigm 390MP >BD3,r,22" Blackstone
r,RV760 w/BC20,Glow Steps, Enduraplas25,Pedego
BakFlip,RVLock,Prog.50A surge ,Hughes autoformer
Porta Bote 8.0 Nissan, Sailun S637