Project Description Environmental sustainability and storm water runoff is increasingly becoming a focus at many universities and cities throughout the United States. Since construction of Grand Valley State University’s (College’s) Allendale Campus began in 1960, the infrastructure has steadily increased to accommodate a growing student population. By 2004, this growth had resulted in roughly 170 acres of impermeable surfaces, such as parking lots and walkways (Womble and Wampler, 2006). When precipitation falls onto these impermeable surfaces, runoff is rapid and abundant. Historically much of the runoff has been collected in pipes and directed toward the ravines east of campus. This practice has resulted in severe erosion, water quality degradation, and slope stability problems in the ravines. Initial baseline data has been collected (Snyder et al., 2008; Wampler, 2009).
Grand Valley State University has been monitoring storm water with a network of probes since 2006. One networked web-based probe that measures several parameters including water depth; flow; temperature, and conductivity was added in 2007. After the construction of a large rain garden in 2008 three additional web-based probes were added to evaluate the effectiveness of the rain garden to attenuate flow. Rainfall data are also being collected at the inflow probe site and is used to evaluate lag time and runoff infiltration rates in the rain garden.  | Grand Valley State University | Rain Garden Monitors
at 08/11/11 11:10AM | Inflow_Temp | 19.68 | C | Inflow_Cond | 0.171 | mS/cm | Inflow_TDS | 0.124 | g/L | Inflow_Sal | 0.09 | PPT | Inflow_Flow | 0 | gal/min | at 09/16/11 2:00AM | Outflow_Temp | 16.55 | C | Outflow_Cond | 1.209 | mS/cm | at 09/15/11 5:00AM | Outflow_TDS | 0.945 | g/L | at 09/08/11 5:20AM | Outflow_Sal | 0.59 | PPT | at 08/30/11 2:00PM | Outflow_Depth | 0.014 | ft | at 08/20/11 12:20AM | Outflow_Flow | 0 | gal/min | | Calder Arts Center
at 05/31/10 6:50AM | Temp | 13.31 | C | Sp Cond | 1.253 | mS/cm | Cond | 0.973 | mS/cm | TDS | 0.814 | g/L | Sal | 0.63 | PPT | Depth | -0.103 | ft |
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