As to dusting anything off, nothing I posted was from before Al Gore invented the Internet. I just typed in key words and checked the site most likely to have pertinent information. Then I shared where it was in case I got it wrong.

Checking federal definitions, we find

http://ecfr.gpoaccess.gov/cgi/t/text/text-idx?c=ecfr;sid=3ee0384802f0138823544c9643eebb78;rgn=div5;view=text;node=33%3A1.0.1.1.2;idno=33;cc=ecfr#33:1.0.1.1.2.1.1.2

Ҥ 2.36 Navigable waters of the United States, navigable waters, and territorial waters.
“(a) Except as provided in paragraph (b) of this section, navigable waters of the United States, navigable waters, and territorial waters mean, except where Congress has

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“(3) Internal waters of the United States not subject to tidal influence that:
(i) Are or have been used, or are or have been susceptible for use, by themselves or in connection with other waters, as highways for substantial interstate or foreign commerce, notwithstanding natural or man-made obstructions that require portage, or
(ii) A governmental or non-governmental body, having expertise in waterway improvement, determines to be capable of improvement at a reasonable cost (a favorable balance between cost and need) to provide, by themselves or in connection with other waters, as highways for substantial interstate or foreign commerce.”

“Are or have been used for substantial interstate or foreign commerce”

Thus, if at some time in the past, a creek were used to float logs downstream to sell to people in other states (say, Florida for instance) or to sell to other nations, that creek would forever be considered a navigable water unless Congress said “No.”

In fact, if it were ever used to haul materials by canoe for purpose of trade (even illegal trade) with Florida, it meets the definition.

David for water navigation

first of all little escambia is not (by Coast Guard definition) a navigable waterway, as there is no commercial shipping on this creek, and the trussel referes to the road access.. CSX blocked it off because after a few idiots decided it was a good idea to jump off the bridge, and in some cases the box cars when the water was up.