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WATER RESOURCES RESEARCH,
VOL. 45,
W08401,
15 PP., 2009
doi:10.1029/2008WR007594
Detection of flooding responses at the river basin scale enhanced by land use change
Appalachian Laboratory, University of Maryland Center for Environmental Science, Frostburg, Maryland, USA
Appalachian Laboratory, University of Maryland Center for Environmental Science, Frostburg, Maryland, USA
Appalachian Laboratory, University of Maryland Center for Environmental Science, Frostburg, Maryland, USA
Russell Laboratories, University of Wisconsin-Madison, Madison, Wisconsin, USA
The Georges Creek watershed (area 187.5 km2) in western Maryland (United States) has experienced land use changes (>17% of area) associated with surface mining of coal. The adjacent Savage River watershed (area 127.2 km2) is unmined. Moments of flood frequency distributions indicated that climatic variability affected both watersheds similarly. Normalizing annual maximum flows by antecedent streamflow and causative precipitation helped identify trends in flooding response. Analysis of contemporary storm events using Next Generation Weather Radar (NEXRAD) stage III precipitation data showed that Georges Creek floods are characterized by higher peak runoff and a shorter centroid lag than Savage River floods, likely attributable to differences in current land use. Interestingly, Georges Creek produces only two thirds of the stormflow volume as Savage River, apparently because of infiltration into abandoned deep mine workings and an associated transbasin diversion constructed circa 1900. Empirical trend analysis is thus complicated by both hydroclimatic variability and the legacy of deep mining in the basin.
Received 14 November 2008; accepted 15 May 2009; published 1 August 2009.
Citation: (2009), Detection of flooding responses at the river basin scale enhanced by land use change, Water Resour. Res., 45, W08401, doi:10.1029/2008WR007594.
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