In 2003, we were retained to develop the stormwater management and low impact development concepts for the Valleyview subdivsion in the Langford. Valleyview incorporates many different strategies to maintain the water balance of the site and protect both Bilston Creek and terrestrial habitat. For example, houses are situated on naturally impervious, rocky areas so the net increase in imperviousness from rooftops is minimized. This allowed for natural drainage patterns to be maintained and enhanced thus maintaining habitat and minimizing the amount of hard piping. A system of ponds and swales carry runoff on the surface to permit infiltration back in to the groundwater and natural filtration of sediments before the water reaches Bilston Creek.