York1 BaltACD Be careful of which watershed's you protect against! Two "one in a thousand years" rainfall in two years. Maybe it's time they use a different calculator.
BaltACD Be careful of which watershed's you protect against!
Two "one in a thousand years" rainfall in two years. Maybe it's time they use a different calculator.
Ellicott City expended all their protection efforts against the Patapsco River and totally overlooked the dangers of the 'minor' creeks, streams, and runs that feed the river. On top of overlooking those minor watersheds, development overtook those watershed up stream of Ellicott City - that development in the form of housing, business parks and highways eliminated a major ability of the developed area to absorb storm waters. Without the area having the ability to absorb storm waters, those waters overwhelm their watershed and result in localized flast flooding.
I live about 15 miles from Ellicott City. My area had thundersorms those same days, however, our storms did not stay staionary for a couple of hours. My area had no flooding.
About 30 years ago when I was living in Jacksonville, we had a thunderstorm system that ended up being stationary over the South side of the city for several hours. Many streets were flooded. In driving to work, I had to ford the flood waters on several of those streets - the flood waters were 8 to 10 inches deep. Fortunately the area where this happened is nominally flat, so there wastn't the potential to drive into a area where the entire vehicle could be submerged.
Never too old to have a happy childhood!
BaltACDBe careful of which watershed's you protect against!
York1 John
Be careful of which watershed's you protect against!
https://icma.org/articles/article/historic-ellicott-city-flood-story-recovery-back-open-field-demonstration
System will not be able to completely restore for couple months. The article mentioned that the control bungaloes were destroyed by flooding. Here is another example oof not building these huts above any posssible flood waters. NJ Transit had to learn hard way because of Sandy as well as Amtrak.
There are other examles. Note: CSX's ex C&O line along the Ohio river has all their signal boxes on stilts as high as 10 feet or more.
https://www.rtands.com/track-maintenance/st-louis-flooding-crippling-metrolink-light-rail-system-longer-than-first-expected
Our community is FREE to join. To participate you must either login or register for an account.