|Assessment of Near-Stream Ground Water-Surface Water Interaction (GSI) of a Degraded Stream Before Restoration (EPA/600/R-07/058) August 2008
This publication has been produced as part of the NRMRL’s strategic long-term research plan. It is published and made available by EPA’s Office of Research and Development to assist the user community and to link researchers with their clients. This report describes a case study of the influence of stream channel geomorphology on surface water and ground water hydrology. The objective of the study was to characterize ground water-surface water interaction (GSI) in Minebank Run (MBR), a degraded urban stream in Baltimore County, Maryland, that was slated for restoration. This study represents the first phase in quantifying the effects of stream restoration on GSI at MBR and is intended to provide the basis for comparison of post-restoration GSI at MBR. Stream restoration at MBR will use stream channel reconstruction methods designed to stabilize banks and reduce erosion, an approach intended to protect property and sewer and drinking water infrastructure. A clear understanding of GSI behavior under degraded conditions is necessary to quantify the effects of geomorphic methods of restoration on GSI. In turn, GSI is known to influence stream function, such as nutrient uptake, stream metabolism, and primary production. Thus, the value of these baseline data extends to predicting the influence of geomorphic structure on GSI behavior and on subsequent biogeochemical and biotic response.
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