Pervasive changes in stream intermittency across the United States

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dc.contributor.authorZipper, Samuel C.en
dc.contributor.authorHammond, John C.en
dc.contributor.authorShanafield, Margareten
dc.contributor.authorZimmer, Margareten
dc.contributor.authorDatry, Thibaulten
dc.contributor.authorJones, C. Nathanen
dc.contributor.authorKaiser, Kendra E.en
dc.contributor.authorGodsey, Sarah E.en
dc.contributor.authorBurrows, Ryan M.en
dc.contributor.authorBlaszczak, Joanna R.en
dc.contributor.authorBusch, Michelle H.en
dc.contributor.authorPrice, Adam N.en
dc.contributor.authorBoersma, Kate S.en
dc.contributor.authorWard, Adam S.en
dc.contributor.authorCostigan, Katieen
dc.contributor.authorAllen, George H.en
dc.contributor.authorKrabbenhoft, Corey A.en
dc.contributor.authorDodds, Walter K.en
dc.contributor.authorMims, Meryl C.en
dc.contributor.authorOlden, Julian D.en
dc.contributor.authorKampf, Stephanie K.en
dc.contributor.authorBurgin, Amy J.en
dc.contributor.authorAllen, Daniel C.en
dc.date.accessioned2022-04-06T14:34:57Zen
dc.date.available2022-04-06T14:34:57Zen
dc.date.issued2021-08en
dc.description.abstractNon-perennial streams are widespread, critical to ecosystems and society, and the subject of ongoing policy debate. Prior large-scale research on stream intermittency has been based on long-term averages, generally using annually aggregated data to characterize a highly variable process. As a result, it is not well understood if, how, or why the hydrology of non-perennial streams is changing. Here, we investigate trends and drivers of three intermittency signatures that describe the duration, timing, and dry-down period of stream intermittency across the continental United States (CONUS). Half of gages exhibited a significant trend through time in at least one of the three intermittency signatures, and changes in no-flow duration were most pervasive (41% of gages). Changes in intermittency were substantial for many streams, and 7% of gages exhibited changes in annual no-flow duration exceeding 100 days during the study period. Distinct regional patterns of change were evident, with widespread drying in southern CONUS and wetting in northern CONUS. These patterns are correlated with changes in aridity, though drivers of spatiotemporal variability were diverse across the three intermittency signatures. While the no-flow timing and duration were strongly related to climate, dry-down period was most strongly related to watershed land use and physiography. Our results indicate that non-perennial conditions are increasing in prevalence over much of CONUS and binary classifications of 'perennial' and 'non-perennial' are not an accurate reflection of this change. Water management and policy should reflect the changing nature and diverse drivers of changing intermittency both today and in the future.en
dc.description.notesThis manuscript is a product of the Dry Rivers Research Coordination Network, which was supported by funding from the US National Science Foundation (DEB-1754389). Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the US Government. This manuscript was improved by constructive feedback from Kristin Jaeger and three anonymous reviews.en
dc.description.sponsorshipUS National Science FoundationNational Science Foundation (NSF) [DEB-1754389]en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1088/1748-9326/ac14ecen
dc.identifier.issn1748-9326en
dc.identifier.issue8en
dc.identifier.other84033en
dc.identifier.urihttp://hdl.handle.net/10919/109572en
dc.identifier.volume16en
dc.language.isoenen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectnon-perennial streamsen
dc.subjectclimate changeen
dc.subjectland useen
dc.subjectriveren
dc.subjectstreamflowen
dc.subjectephemeralen
dc.subjecttime seriesen
dc.titlePervasive changes in stream intermittency across the United Statesen
dc.title.serialEnvironmental Research Lettersen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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Scholarly Works, Biological Sciences
Destination Area: Global Systems Science (GSS)