The Detain H20 Device, otherwise known as “The Kraken” is a cost effective solution for detention basin retrofits.
Traditionally, stormwater management has focused on flood control, and more recently, additional focus on water quality treatment has become common. A problem with these approaches has been found in that flood control is designed for large events and water quality volume control is focused on small events/the first flush, thereby leaving a large portion of events uncontrolled. As a result, urbanization continues to cause severe erosion that can destroy our roads and bridges as well as pollute our streams and ruin habitat. Public infrastructure is being damaged. Bridge supports are being weakened by embankment erosion. And, high velocities continue to cause stream bank erosion. It is clear that standard detention and water quality volume measures are not enough to control the necessary flows to achieve stream stability.
The solution lies in an inexpensive retrofit to existing detention ponds that dot our landscape everywhere. “The Kraken” is a retrofit device that restricts the capacity of a detenion basin’s low-flow pipe in order to minimize the erosive forces of the flows caused by smaller storm events, all while maintaining the current level of service during flood events by using a bypass. The simple fix offfered by “The Kraken” is orders of magnitude more cost-effective than constructing new BMPs.