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dc.contributor.authorClaessens, Luc
dc.contributor.authorHopkinson, Charles S.
dc.contributor.authorRastetter, Edward B.
dc.contributor.authorVallino, Joseph J.
dc.date.accessioned2006-04-13T20:54:41Z
dc.date.available2006-04-13T20:54:41Z
dc.date.issued2006-03-25
dc.identifier.urihttp://hdl.handle.net/1912/873
dc.descriptionAuthor Posting. © American Geophysical Union, 2006. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Water Resources Research 42 (2006): W03426, doi:10.1029/2005WR004131.en
dc.description.abstractWe assessed the effects of historical (1931-1998) changes in both land-use and climate on the water budget of a rapidly urbanizing watershed, Ipswich River basin (IRB), in northeastern Massachusetts. Water diversions and extremely low flow during summer are major issues in the IRB. Our study centers on a detailed analysis of diversions and a combined empirical/modeling treatment of evapotranspiration (ET) response to changes in climate and land-use. A detailed accounting of diversions showed that net diversions increased due to increases in water withdrawals (primarily ground water pumping) and export of sewage. Net diversions constitute a major component of runoff (20% of streamflow). Using a combination of empirical analysis and physically based modeling we related an increase in precipitation (2.7 mm/yr) and changes in other climate variables to an increase in ET (1.7 mm/yr). Simulations with a physically based water-balance model showed that the increase in ET could be attributed entirely to a change in climate, while the effect of land-use change was negligible. The land-use change effect was different from ET and runoff trends commonly associated with urbanization. We generalized these and other findings to predict future streamflow using climate change scenarios. Our study could serve as a framework for studying suburban watersheds, being the first study of a suburban watershed that addresses long-term effects of changes in both land-use and climate, and accounts for diversions and other unique aspects of suburban hydrology.en
dc.description.sponsorshipThis research was partially supported by NSF grants (DEB-9726862, OCE-9726921 and OCE-0423565).en
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen
dc.publisherAmerican Geophysical Union
dc.relation.urihttp://dx.doi.org/10.1029/2005WR004131
dc.subjectWater budgetsen
dc.subjectEvapotranspirationen
dc.subjectClimate changeen
dc.subjectLand-use changeen
dc.subjectUrbanizationen
dc.subjectWater-balance modelen
dc.subjectIpswich Riveren
dc.titleEffect of historical changes in land use and climate on the water budget of an urbanizing watersheden
dc.typeArticleen
dc.identifier.doi10.1029/2005WR004131


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