Hi CP,
First nice gold, Congrats! Gold combined with Mother Nature is a fickle thing as it seems to do things that do not make sense. If it is totally related to the current creek then any type of unusual occurance could have caused it to drop in one place. However, it came from a source in the first place so there is a reason why it is where it is only thing is that reason may not be obvious to the untrained eye. My eye is still fairly untrained so do not feel bad.
Pictures can tell a much better history than words so if you could post some pictures of your spot without giving it away then folks like Lanny, Eagle Down, Hoser John to name a few might be able to give you some better inputs about your spot.
Pictures should be taken with a Non GPS signal camera so that means DO NOT post a cell phone picture as it carries a GPS tag that can be used to locate your spot. Congrats on the find...........63bkpkr