Case Study of St. Louis, Missouri: Comparison of Bioretention Performance to the Runoff Component of a Restored Water Balance
Publication: Journal of Environmental Engineering
Volume 139, Issue 4
Abstract
Runoff has important meaning in the context of the performance of post-construction best management practices (BMP) and compliance with National Pollutant Discharge Elimination System (NPDES) storm water permits. To illustrate, this work uses continuous simulation modeling to estimate water balance components from bioretention and compares the results to those of a representative natural condition for the St. Louis, Missouri, area. Three different bioretention scenarios were modeled, each with different capture volumes and design features. The water balance of the representative natural condition is based on a prairie landscape in clayey silt soil over limestone bedrock. If runoff is defined as all discharge originating from the BMP, then none of the scenarios achieved the target natural condition. This is because evapotranspiration (ET) is the dominant process removing runoff in a natural condition, deep infiltration (deep recharge) in the St. Louis area is limited by geology, and ET is a small part of runoff removal in bioretention. If runoff is defined as the sum of overflow and underdrain flow, then any of the three bioretention scenarios could be adequate. However, there is a significant difference in BMP size, and by correlation, construction and land costs. This work demonstrates why an assessment of the capability of BMP performance in the context of local conditions is needed before setting BMP performance standards into NPDES permits. The BMP water balance indicates that in geology typical of St. Louis, Missouri, mimicking or restoring the pre-development runoff volume is not achievable with BMPs that primarily rely on infiltration to reduce volume. Bioretention is predicted to increase stream base flow, but the overall volume of water discharged to sewers, creeks, and rivers would be greater than the natural condition.
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References
Atchison, D., Potter, K., and Severson, L. (2006). “Design guidelines for stormwater bioretention facilities.”, Univ. of Wisconsin Water Resources Institute, Madison, WI.
Center for Watershed Protection (CWP). (2007). “Urban stormwater retrofit practices.” Manual 3, Ellicott City, MD.
Debusk, K., Hunt, W., and Line, D. (2011). “Bioretention outflow: Does it mimic nonurban watershed shallow interflow?” J. Hydro. Eng., 16(3), 274–279.
EPA. (2009). “Technical guidance on implementing the stormwater runoff requirements for federal projects under Section 438 of the Energy Independence and Security Act.”, Washington, DC.
Hoskins, J. (2012). “Locally derived water balance method to evaluate realistic outcomes for runoff reduction in St. Louis, Missouri.” Watershed Sci. Bull., 3(1), 61–63.
Price, K. (2011). “Effects of watershed topography, soils, land use, and climate on baseflow hydrology in humid regions: A review.” Prog. Phys. Geog., 35(4), 465–492.
Richards, J. (2010). “Groundwater-flow model and effects of projected groundwater use in the Ozark Plateaus Aquifer System in the vicinity of Greene County, Missouri—1907–2030.”, USGS, Reston, VA.
Schuster, W., Gehring, R., and Gerken, J. (2007). “Prospects for enhanced groundwater recharge via infiltration of urban storm water runoff: A case study.” J. Soil Water Conserv., 62(3), 129–137.
Selbig, W. R., and Balster, N. (2010). “Evaluation of turf-grass and prairie-vegetated rain gardens in clay and sand soil, Madison, Wisconsin, water years 2004–2008.”, Reston, VA.
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© 2013 American Society of Civil Engineers.
History
Received: Jul 7, 2011
Accepted: Jul 23, 2012
Published online: Aug 3, 2012
Published in print: Apr 1, 2013
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