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University of Delaware Rain Garden  

Newark, DE

This garden was built by a graduate student at the University of Delaware to reduce flooding in the area and to promote education on rain gardens water quality practices.

  • Funded by:
  • Cost:
  • Designer: Elaine Grehl
  • Size: 3200 square feet
  • Drained area: runoff from roofs and parking lots that total an area of 1.42 acres
  • Completed: 2005

Construction:

  • Depth: 6 inches below grade at its deepest point
  • Fill: 300 cubic yards of soil was excavated and the topsoil replaced; the rest was packed into aesthetic mounds around the garden.
  • Overflow: A storm drain, which all the runoff used to flow through directly, is still there on a small mound in the middle of the garden
  • Plant Material: Only native plant species were used in the garden

Problems Encountered:

  • The soil is largely clay so infiltration is slow and standing water results. To mend this, holes were bored through the clay and filled with gravel to initiate faster percolation.
  • Some buried utilities were found during excavation, so to avoid complications and delays be sure to check thoroughly for these exact locations

PROJECT CONTACT: Elaine Grehl, Longwood Fellow, University of Delaware

ACCESSIBLITITY: Open to the public at all times.

DIRECTIONS: Take I-95S, Exit 1B, go north on 896 across train tracks, right at first light on East Park Place, left on Academy. Rain garden located on right behind Penny Hall.

 

 
University of Delaware Cooperative Extension