Ohio; Rain Garden Design and Monitoring - Ohio State University

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Rain Garden Design & Monitoring

Jay Martin, Ph.D., and Derek Schlea Ohio State University

What the results will be used for  • Increase guidance  – Lack of information on networks

• Engineering design standards • Retrofits • Promote the technology

Table 1. Summary of individual individual and laboratory studies of benefits of rain gardens gardens or bioretention areas related to storm water flow and quality (Davis et al. 2009). Previous results have reported reductions of metals (Davis et al. 2003, Hunt et al. 2008)

Site location / description

Parameter

Load Reduction (%)

Citation

Stormwater Stormw ater Flow Result Results s Burnsville, MN

flow

90

Barr Engineering 2006

Haddam, CN

flow

98

Dietz and Clausen 2006

Greensboro, NC

flow

~5 0

College Park, MD

flow

49-58

Charlotte, NC

flow

96

Hunt et al. 2006 Davis 2008 Hunt et al. 2008

Water Quality Results College Park, MD

TSS

59

Davis 2007

College Park, MD

TSS

54

Davis 2007

Durham, NH

TSS

97

UNHSC 2006

Villanova, PA

TSS

99

USEPA 2006

Haddam, CN

Total N

32

Dietz and Clausen 2006

Greensboro, NC

Total N

40

Hunt et al. 2006

Chapel Hill, NC

Total N

40

Hunt et al. 2006

Louisburg, NC

Total N

65

Sharkey 2006

Durham, NH

Total N

97

UNHSC 2006

Pilot boxes

Total N

30-99

College Park, MD

Total P

79

Davis 2007

College Park, MD

Total P

77

Davis 2007

Haddam, CN

Total P

-111

Dietz and Clausen 2006

Greensboro, NC

Total P

-240

Hunt et al. 2006

Chapel Hill, NC

Total P

65

Hunt et al. 2006

Louisburg, NC

Total P

69

Sharkey 2006

Villanova, PA

Total P

28

USEPA 2006

Pilot boxes

Total P

50-99

Davis et al. 2006

Laboratory columns

Total P

63-85

Hsieh et al. 2007

College Park, MD

Zn

54

Davis 2007

College Park, MD

Zn

69

Davis 2007

Villanova, PA

Zn

74

USEPA 2006

Durham, NH

Zn

99

UNHSC 2006

Davis et al. 2006

Goals and Objectives • Hydrology  – Quantify volume and peak flow reductions  – Compare to control neighborhood

• Water Quality

 – Quantify nutrient reductions

• Modeling  – Application  –  Application to additional additional watersheds

Garden Locations

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