A project plan must be submitted with each rebate application to demonstrate the selection, use, and anticipated outcomes of the practices. The project plan may be hand drawn.
- Draw site to scale and include dimensions, property line, and street address.
- Show direction of water flow off roof tops and landscapes with arrows.
- Determine catchments.
- Identify areas that require irrigation.
- Label surface areas of hardscapes, identified rainwater practice(s), and associated potential storage volume.
- Assess site conditions to determine rainwater harvesting goals.
- Use supply and demand calculations to size and locate rain tank(s).
- Use gutter and downspouts to convey the water to the storage.
- Provide retention area(s) for overflow from rain tank(s).
- Take advantage of hardscapes to catch water and redistribute to planted areas.
- Soil can serve as a catchment by grading the surface to increase and direct runoff.
- Strive for zero runoff with no rain to run off your property.
Simple (Passive) Rain Garden
Collection – roof, patio, sidewalks
Distribution System – gutter and downspouts, channels, ditches, swales
Landscape Holding Area – concave depressions, the addition of berms, moats, or soil terracing
Complex (Active) Rain Tank
Collection – roof
Conveyance – direct water from catchment area to storage
Storage – rain tank
Filter – gutter debris screen, downspout debris screen and filter, diverter, first flush, roof washer, etc.