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Falling and rising (slug) test data were used for computation of saturated hydraulic conductivity. Hydraulic head measurements were obtained from pressure transducers installed in piezometers between Summer 2013 and Summer 2015. Samples for porewater chemical analysis were collected from porewater sampling tubes on the piezometer network between Summer 2014 and Summer 2015.","distributionFormats":[{"name":"Comma-separated values (CSV)","type":"text/csv","version":"unknown"}],"distributorContacts":[{"organisationName":"NERC EDS Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"distributor","email":"info@eidc.ac.uk"}],"id":"d82a04ce-f04d-40b4-9750-1a2bf7dc29a3","incomingCitationCount":4,"incomingCitations":[{"description":"Heppell, C. M., Binley, A., Trimmer, M., Darch, T., Jones, A., Malone, E., … Lloyd, C. E. M. (2017). Hydrological controls on DOC  :  nitrate resource stoichiometry in a lowland, agricultural catchment, southern UK. Hydrology and Earth System Sciences, 21(9), 4785–4802.","url":"https://doi.org/10.5194/hess-21-4785-2017"},{"description":"Rovelli, L., Attard, K. M., Binley, A., Heppell, C. M., Stahl, H., Trimmer, M., & Glud, R. N. (2017). Reach-scale river metabolism across contrasting sub-catchment geologies: Effect of light and hydrology. Limnology and Oceanography, 62(S1), S381–S399.","url":"https://doi.org/10.1002/lno.10619"},{"description":"Rovelli, L., Attard, K. M., Heppell, C. M., Binley, A., Trimmer, M., & Glud, R. N. (2018). Headwater gas exchange quantified from O2  mass balances at the reach scale. Limnology and Oceanography: Methods, 16(10), 696–709.","url":"https://doi.org/10.1002/lom3.10281"},{"description":"Rovelli, L., Olde, L.A., Heppell, C.M., Binley, A., Yvon‐Durocher, G., Glud, R.N., & Trimmer, M. (2021). Contrasting Biophysical Controls on Carbon Dioxide and Methane Outgassing From Streams. In Journal of Geophysical Research: Biogeosciences (Vol. 127, Issue 1). American Geophysical Union (AGU).","url":"https://doi.org/10.1029/2021jg006328"}],"infoLinks":[{"url":"https://data-package.ceh.ac.uk/sd/d82a04ce-f04d-40b4-9750-1a2bf7dc29a3.zip","name":"Supporting information","description":"Supporting information available to assist in re-use of this dataset","function":"information","type":"OTHER"}],"inspireThemes":[{"theme":"Hydrography","uri":"http://inspire.ec.europa.eu/theme/hy"}],"keywordsOther":[{"value":"Solutes"},{"value":"river","uri":"http://www.eionet.europa.eu/gemet/concept/7244"}],"keywordsPlace":[{"value":"Hampshire Avon"},{"value":"England","uri":"http://sws.geonames.org/6269131"},{"value":"United Kingdom","uri":"http://sws.geonames.org/2635167"}],"keywordsTheme":[{"value":"Hydrology","uri":"http://onto.nerc.ac.uk/CEHMD/topic/9"}],"licences":[{"value":"This resource is made available under the terms of the Open Government Licence","code":"license","uri":"https://eidc.ac.uk/licences/ogl/plain"}],"lineage":"All data were generated by the authors with help from field and laboratory technicians. All hydraulic head data generated by the pressure transducers were checked fortnightly (when possible) against manual measurements. As chemical data were generated, checks were made to ensure accuracy (certified reference materials) and precision (repeat measurements) were within accepted tolerance limits. We ensured measured values fell within the calibration range and re-analysed samples where necessary. 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