Originally published 5/17/17
Wolftrap Creek upstream from Follin Lane will soon be upgraded to match the work done three years ago on the downstream side.
The banks will be strengthened by large rocks and buried netting to resist erosion damage during heavy rainfall. The effects of rain runoff are severe now that the watershed is almost completely built out. Fast moving flood waters undermine and topple trees as shown in this photo, and generally degrades the forest environment.
The new phase, costing about $1M, is funded by the VA Dept. of Environmental Quality, and by Fairfax County. Vienna will contribute design and construction management.
Above: The finished down stream improvements in this winter shot shows the cascading pool technique of flood control.