From weather forums, hurricane blogs and other thing I am jumping around to in the internet, it appears that the Beaumont/Port Arthur area has been hammered worse than Houston.
They had some of the rain and storm over the last five days as they are just NE of Houston. Now in the last two days, after their ground, creeks, rivers and bay are totally full, the balance of Harvey goes inland right on top of them. They may have more intense flood damage than anywhere else based upon early reports.
You will hear a lot about this in the coming days. Below is text of the Obama regulation, link, and link to the Trump action.
"(1) Unless an exception is made under paragraph (2), the floodplain shall be:
"(i) the elevation and flood hazard area that result from using a climate-informed science approach that uses the best-available, actionable hydrologic and hydraulic data and methods that integrate current and future changes in flooding based on climate science. This approach will also include an emphasis on whether the action is a critical action as one of the factors to be considered when conducting the analysis;
"(ii) the elevation and flood hazard area that result from using the freeboard value, reached by adding an additional 2 feet to the base flood elevation for non-critical actions and by adding an additional 3 feet to the base flood elevation for critical actions; "(iii) the area subject to flooding by the 0.2 percent annual chance flood; or
"(iv) the elevation and flood hazard area that result from using any other method identified in an update to the FFRMS.