Detainment Bunds – how well do they catch P during storm events?

By John Paterson & Lachlan McKenzie, torm water runoff events cause around 12 tonnes of phosphorus to end up in Lake Rotorua every year. Detainment bunds can reduce this flow of nutrients to the lake by temporarily detaining storm water run-off, allowing phosphorus laden particles to settle out. A project plan to improve knowledge on detainment bunds was submitted [...]