Archive:

Dec 2011

Volume-Based Hydrology explained by Andy Reese


“For various and often good reasons, there is a growing awareness of the need to handle stormwater and runoff with more focus on volume as a basis for design and decision making. It is making its way into America’s midsection and widely into the minds of regulators—federal, state, and local. The shift toward VBH is a good thing, and making the shift carefully and gracefully will help ensure its long-term effectiveness,” concludes Andy Reese.

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Evolution of Sustainable Urban Drainage in Malmo, Sweden


“The concept of sustainable urban drainage was introduced in the city of Malmö already in the late 1980s. Over the two decades the new drainage concept has been applied in Malmö, the technique has gradually been developed and further refined. This applies both to the physical planning and to the preferences regarding the technical configuration,” wrote the late Peter Stahre when his book was published.

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Stormwater Detention: Ten proven ways to cheat

“Have you ever felt that justifying your detention design to a reviewing agency was a game of numbers? Do you have ways of making that marginal design look like a winner? Most engineers do,” wrote Glenn E. Brooks in the September 2007 issue of Stormwater magazine.

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VIDEO: "DOE drainage standards will not protect Puget Sound”, according to Tom Holz


According to Tom Holz, “The Department of Ecology apears to be on a path to continue using the same standard for development for the next five to eight years that has been used for the last decade. DOE calls it the ‘flow-duration’ standard. It more accurately should be described as the 0/100/100 standard. That is, DOE will require ‘0%’ forest set-aside, will allow ‘100%’ hardened surfaces, and will allow ‘100%’ runoff of precipitation falling on a site.”

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