I just found this NASA eye in the sky site through the Maryland Department of Natural Resources. You can easily see the silt moving down Chesapeake Bay. The top photo is from September 12, the silt is off of Taylor's Island.
The bottom image is from two days later, September 14. The silt has moved down to mid-Bay between the mouth of the Potomac River and Smith Island. Mid-Bay the silt does not appear as dense (not sure if that is the right word for it), but it is definitely there.
The silt appears to be moving past Tangier Sound, but I suspect the tides are pulling a little bit in past the islands. Plan B - the Honga River, Tangier Sound and Pocomoke Sound - might be the way to go. I sailed to the edge of Pocomoke Sound a few years ago, anchoring at Great Fox Island. I need to research the area tonight. Right now all I know is that there is a town called Saxis with a restaurant called the Marshtump Cafe. Sounds interesting.