The Observed Effects of Stormwater Infiltration on Groundwater
Publication: World Environmental and Water Resources Congress 2009: Great Rivers
Abstract
This research presents a case study of the impacts of stormwater infiltration on a shallow unconfined aquifer at a bioinfiltration BMP on the campus of Villanova University. The study site is a vegetated basin that with a 0.53 hectares drainage area consisting of parking areas and recreational fields with 35% directly connected impervious area. The study utilizes continuous monitoring of groundwater elevation, temperature and conductivity in conjunction with surface water hydrologic monitoring to assess the transport of conductivity and to examine the extent of groundwater mounding. Results indicate a direct impact on groundwater conductivity near the BMP, but also show significant attenuation compared to influent surface water. Following storms less than approximately 1.9 cm the upgradient control well presents larger increases in groundwater elevation, but for larger storms the well adjacent to the site displays increased mounding. Groundwater elevation monitoring indicates that the extent of groundwater mounding is related to infiltration rate and groundwater temperature. This study demonstrates the utility of groundwater monitoring for the purpose of BMP performance assessment. It is suggested that groundwater monitoring be considered for site monitoring plans and as a tool for BMP site selection.
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Copyright
© 2009 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
ASCE Technical Topics:
- Best Management Practices (BMPs)
- Case studies
- Engineering fundamentals
- Environmental engineering
- Groundwater
- Hydrologic engineering
- Hydrology
- Infiltration
- Measurement (by type)
- Methodology (by type)
- Research methods (by type)
- Stormwater management
- Surface water
- Temperature effects
- Temperature measurement
- Water (by type)
- Water and water resources
- Water management
- Water treatment
- Wells (water)
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