I am no geologist not a physicist too neither but I can see the obvious. No track of hill runs downhil in a level line. Rivers tend to find a way to leach into the lowest stretch, powered by any build up after rain and by gravity.
Stones tend to get pulled out of soft sides as the water sucks at the underneath of things. You only see the top but the pressure is always on the bottom of the flow. The stream builds by the yard and becomes a torrent by the mile, capable of handling tons of rock.
As soon as the ground rises, the rocks slow and slew into an aggregate locked temporarily by hydraulics that instantly disappear for the season. In the sluice of the flood, barriers form at the first rise of the ground and a train builds up as long as the flood lasts, so the a barrier forms across the neck. The trail of stones downhill is always greater than the build up of debris on the incoming side. The outgoing one extends really far in comparison, as the water powering the first hit loses power and regains it after filtering through. But by then it is aftemath, just runaway with no power.
You can see all of this in the video, also note where floating debris builds up across snags. This means that bridge building has to change for flood areas, subject to so called one in one-hundred-year floods. Such floods are recorded to reccur with centurian frequency.
Natural fords occur where modern bridges are built and there is good reason for that. Fords form at river narrows. These tend to have hard rock sides capable of channeling floods. Nobody crossed floods in the good old days, then some fool invented steam.
All of a sudden beautifully graceful archways spanned rivers along straight, level lines. Really handy for catching debris in a flood. Somehow, one day bridges must be built when cost is not a factor, nor is seasonal hydraulics. These will be built where the river is widest and the cost will just be paid by hard men working together for their community. They will be built slowly at first, once the replacement bridges are rebuilt after these floods. You have to go along to get along but when the lost bridges are repaired and replaced, statesmen will have to start looking for alternative bridges that will last for millennia with no real cost, perhaps using off seasn workers.
“The event occurred between September 25 and 27 when Hurricane “Helene” made landfall and began to devastate areas from Florida to western North Carolina, including Chimney Rock, a small village tucked in the Blue Ridge Mountains.
According to the National Weather Service (NWS), the region around Asheville, North Carolina, approximately 30 km (18 miles) from Chimney Rock, received a total of 360 mm (14 inches) of rain during this period, causing the Broad River to flood and inundate the city on the morning of September 27, prompting the deployment of emergency teams to aid residents.”
If it happened one hundred years ago, it is going to happen again, that is written in the solar system: Cycles are going to cycle. As one of Jehovah’s Witnesses, I look past the sales pitch to the aftermath. We look forwards to another thousand years, where we can harness our own communities to rebuild without the presence of demons and satanic politics. This is called After Amageddon. We are not due to go to heaven, we were made to be happy at our chosen professions; to till the earth with sweat or create wonders of design with the use of holy spirit, this spirit is available now, if you want to ask for it.
I do not know the how of it but the why of it makes sense ,not as much as I am hoping for but it is powerful, even today in the middle of evil. Get some.
JW.org In just a little while the wicked will be no more you will give attention to his place. Psalm 37.
