My uncle owns a house on the lower Potomac just northwest of the gas
docks.
We used to go in and out at Tall Timbers and Point Lookout. Make sure
you fish of the correct side of the pier at Point Lookout if you don't
have a fishing license.
I know about the gas docks north of the mouth of the Patuxent, but didn't know of any on the
Potomac. Learn something every day!
Sadly, fishermen can't get anywhere near the Gas Docks these days. Used
to be one of the best fishing spots in the mid-Bay area. Same with the
nuke plant...you can't get close anymore and catch those two-headed
stripers. Security got tight in both places after 9-11 and, of course,
the gas docks started being used again.