The Pulte Homes Mavera development at FM 1314 and SH 242 comprises approximately 2000 acres. Contractors first focused on clearing the 865 acres east of FM 1314. Photos taken on 7/22/2022 show they’re now also focusing on the 1150 acres west of FM 1314. Significant clearing in this western portion has already occurred. But more remains.
Map of Mavera At Ultimate Buildout
Photos From West to East
Hydrologic Timing Used to Reduce Detention Requirements
While Mavera will provide some linear detention in the main channel along with some small ponds, it relies heavily on a hydrologic timing study to avoid building all the floodwater detention capacity normally associated with a development of this size.
Hydrologic timing studies attempt to show that a development can get stormwater to a river, such as the West Fork, before the peak of a flood arrives. The theory: if you aren’t adding to the peak, you don’t need as much detention.
However, Harris County discourages the use of hydrologic timing. It encourages developers to get their water to the river as fast as possible. If enough developments do that, it can shift the peak. Regardless, Montgomery County still allows it.
In a hundred-year (1% annual chance) flood, this development claims it will not add to the peak. And therefore, it will have no adverse impact downstream. Yet it alone sends more than 16,300 cubic feet per second downstream toward West Fork sand mines and the Humble/Kingwood Area. That represents about 10% of the water that came down the West Fork during Harvey at this location.
Posted by Bob Rehak on 8/2/2022
1799 Days since Hurricane Harvey
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