lizkat
Watching March roll out real winter
- Joined
- Aug 15, 2020
- Posts
- 7,341
We had most of the day and night yesterday with rain, torrential rain, flash flood warnings, frick’n tornado spotted close to us in the Northern suburbs of Houston in January. This morning 71F here, 35F in Oklahoma looks like the heat won this round.
So that was a culvert not a bridge? Kind of looks like a river there.
Yep, just a big culvert. Really big, 30 feet in diameter. The 20 and 30 foot ones up here are inspected every two years and in the most recent inspection prior to the 2006 flooding collapse, it got a grade of 5 out of 7. The water there is ordinarily just a minor stream passing through under the roadways, you don't even really notice it as you drive along.
But as I said, the local streams and creeks all became raging monsters in the Catskills after those rains on June 28, 2006. There's only one way for water to get from two and three thousand feet above sea level to the ocean and that's to run in any direction that's downhill, meanwhile gaining velocity and destructive powers from headwaters to larger streams and feeder rivers. Which of course is why the culvert was so large to begin with. The washout was something like 150 feet by 50 deep.
The reason the crest of waters under the i-80 Delaware Water Gap was eventually 21 feet above normal that week is all just from what happened up here and along the way.... water coursing through the Susquehanna and Delaware river systems down to the Atlantic. Of course the NYC drinking water reservoirs up here were way more than topped off and so had to release water in order to prevent dam ruptures, and that in turn contributed to the flooding way further downstate.