Grand Valley State University

Storm Water Monitoring

 

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

Limitation & Data Disclaimer

Uncertainty and potential for error can be associated with environmental monitoring data. Data users are cautioned to consider carefully the provisional nature of the information before using it for decisions that concern personal or public safety or the conduct of business that involves substantial monetary or operational consequences.

No warranty, express or implied, is given as to the accuracy, reliability, utility or completeness of the data hosted on this datacenter, and this organization shall not be held liable for improper or incorrect use of the data described or information contained on these pages.