Before
Plans
After
Washington State University Extension and Stormwater Center administer the Low Impact Development (LID) Certification. Low Impact Development refers to the restoration of pre-disturbance hydrologic processes of infiltration. Rainwater is allowed to soak into the land much as it has for eons before human development occurred.
Methods to allow infiltration include:
Pervious paving
Raingardens (infiltration swales)
Rainwater collection and retention for later use in irrigation
Green roofs which allow rainwater to be used by and evaporated from plants on the roof.
Rhene Johns is LID certified and provides consultation in sustainable site development.