I'm from Baltimore, and work part-time at the local Gunpowder Falls fly-shop, Backwater Angler. It's good to know that some fellow Gunpowder fisherman are talking on this forum!
To answer the question about the log-jams being cut out. Yes, unfortunately the stretch from Falls Rd. access to Bluemount Rd. has be de-logged. Theaux LeGardeur, the owner of the shop even got pictures of the people cutting out the logs with chain-saws. Theaux managed to call the park service, but since they are buddies with the canoe club, the club managed to get off with only a "warning."
Another aspect of interest in the past couple of months has been Bluemount Quarry. They have been seen violating their permit to crush rebar, and have installed a drain into the Gunpowder. If anyone has any further info on this matter, contact Theaux at Backwater Angler!
I encourage everyone to check out the shop, or visit our website at: