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Site Drainage Requirements

Single Family Residential Building Sites

  • A site drainage plan that bears the seal and signature of a Civil Engineer or Land Surveyor registered to practice in the State of Michigan must be supplied.
  • Required Elevations (U.S.G.S. Datum)Existing and proposed grades around perimeter of lot
  • Existing and proposed grades at building corners Proposed first floor finish elevation
  • Finish grades at adjacent buildings
  • Sidewalks Ditch lines Road centerline and edge surrounding area 100 feet beyond site limits (contours in 1 foot intervals or elevations to 0.1 feet on a grid of 50 feet or less, as required) 200 feet beyond site – commercial and industrial site.
  • Dimensions to be Shown Setbacks and side yards of adjacent buildings
  • Proposed setbacks and side yards Site boundaries
    Additional information to be shown:
  • Property description Bench Mark (U.S.G.S. Datum)
  • Right of Way width
  • Type and width of road surface
  • Proposed drainage pattern
  • Proposed driveways and drainage grades Location and size of sanitary sewer, storm sewer, water main Indicate sump pump location and system or means of disposal.

Site Drainage Plan Requirements