As we attend to the immediate needs of the residents and businesses affected by this week’s flood in Ellicott City, people are asking “Why does this keep happening and what can be done to prevent it?” I attempted to address this question with a blogpost from August 3, 2016 following the last major storm.
Much planning has been done in the last two years and several major projects are being implemented. The basic issues remain. We’re going to have to consider now whether these last two storms represent a new normal and whether the plans are sufficient. As always, it’s a judgement about the extent that we’re going to battle mother nature or adjust to her ways.
Ellicott City – The Great Floods
Lower Ellicott City had been prone to flooding since it was founded. There has been at least four different major floods in recorded history in Downtown Ellicott City. So what makes it so prone?
First of all, Ellicott City sits at the confluence of the Tiber and Patapsco Rivers. This in itself moves a lot of water. Another issue is that Ellicott City sits in a shallow valley, with many of the expanding buildings and homes having to be build literally over the Tiber river. This makes water from almost all directions converge in the valley to the Tiber River before being emptied in the Patapsco. And this isn’t even the biggest issue.