Project Plan

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.

Site Plan

  • 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.

Site Analysis

  • 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.

View Example of Level 1 Project Plan

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

View Example of Level 2 Project Plan

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.