Water management experts say decentralized techniques like rainwater collection tanks, green rooftops, and even absorbent pavement could be the best way to manage water from storms and prevent the kind of runoff that caused flash floods and mudslides in southern California last week.
Capturing the right amount of rainwater will require big changes in how we think about water management and urban infrastructure, say the authors. The water infrastructure of most cities is based on centralized infrastructure, like aqueducts and treatment plants, but lead author Askarizadeh and his colleagues say that’s not the best way to manage water runoff from storms. Instead, they recommend what they call “distributed infrastructure,” which includes things like rainwater tanks and green rooftops, as a complement to (not, they say, a replacement for) those centralized tools. (2015) (October) by Klona Smith-Strickland on Gizmodo.
The review article, “From Rain Tanks to Catchments: Use of Low-Impact Development To Address Hydrologic Symptoms of the Urban Stream Syndrome” in Environmental Science and Techology. http://pubs.acs.org/doi/abs/10.1021/acs.est.5b01635