f4b8ca09-31a7-4f20-9fc1-eb35744e28d6 English ISO/IEC 8859-1 (also known as Latin 1) dataset dataset NERC EDS Environmental Information Data Centre Lancaster Environment Centre, Library Avenue, Bailrigg Lancaster LA1 4AP UK info@eidc.ac.uk https://eidc.ac.uk/ EIDC website The Environmental Information Data Centre (EIDC) is the UK's national data centre for terrestrial and freshwater sciences. information pointOfContact 2025-11-13T16:22:50 UK GEMINI 2.3 OSGB 1936 / British National Grid Groundwater levels data for the CEH River Lambourn Observatory at Boxford (01/02/2012 to 16/01/2015) 2016-10-19 publication 2016-05-18 creation https://catalogue.ceh.ac.uk/id/f4b8ca09-31a7-4f20-9fc1-eb35744e28d6 10.5285/f4b8ca09-31a7-4f20-9fc1-eb35744e28d6 doi: House, A.R., Roberts, C., Stratford, C.J., Old, G.H., Hewitt, E.J., Bell, R., Manamsa, K., Woods, I., Williams, P., Townsend, J., Sorensen, J., Thompson, J. (2016). Groundwater levels data for the CEH River Lambourn Observatory at Boxford (01/02/2012 to 16/01/2015). NERC Environmental Information Data Centre 10.5285/f4b8ca09-31a7-4f20-9fc1-eb35744e28d6 This dataset contains logged and manual observations of groundwater levels for piezometers at the Centre for Ecology & Hydrology (CEH) River Lambourn Observatory wetlands at Boxford, Berkshire, for the period February 1 2012 to January 16 2015 (01/02/2012 to 16/01/2015). The CEH River Lambourn Observatory located in Berkshire, UK (51.445o N 1.384o W) comprises c. 10 ha of riparian wetland which is bordered to the east by a 600 m stretch of the River Lambourn. The subsurface architecture comprises bedrock Chalk, overlain by gravels and then peat. Also presented are datums and ground levels for each piezometer, with data available for groundwater levels in peat, gravels and chalk. Groundwater heads were routinely checked at all piezometers by manually dipping observed water levels. At selected piezometers groundwater heads were monitored every 15 minutes using pressure transducers. Piezometers were not anchored to bedrock, though piezometer datum movement due to peat compressibility with saturation was discounted after comparisons of level surveys. Full details about this dataset can be found at https://doi.org/10.5285/f4b8ca09-31a7-4f20-9fc1-eb35744e28d6 House, A.R. Centre for Ecology & Hydrology enquiries@ceh.ac.uk author Roberts, C. Centre for Ecology & Hydrology enquiries@ceh.ac.uk author Stratford, C.J. Centre for Ecology & Hydrology enquiries@ceh.ac.uk author Old, G.H. Centre for Ecology & Hydrology enquiries@ceh.ac.uk author Hewitt, E.J. Centre for Ecology & Hydrology enquiries@ceh.ac.uk author Bell, R. British Geological Survey enquiries@ceh.ac.uk author Manamsa, K. British Geological Survey enquiries@ceh.ac.uk author Woods, I. British Geological Survey enquiries@ceh.ac.uk author Williams, P. British Geological Survey enquiries@ceh.ac.uk author Townsend, J. British Geological Survey enquiries@ceh.ac.uk author Sorensen, J. British Geological Survey enquiries@ceh.ac.uk author Thompson, J. University College London enquiries@ceh.ac.uk author NERC Environmental Information Data Centre info@eidc.ac.uk publisher Old, G. UK Centre for Ecology & Hydrology info@eidc.ac.uk pointOfContact NERC EDS Environmental Information Data Centre info@eidc.ac.uk custodian UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk owner notPlanned Hydrography theme GEMET - INSPIRE themes, version 1.0 2008-06-01 publication Hydrology River Lambourn Observatory otherRestrictions no limitations otherRestrictions This resource is made available under the terms of the Open Government Licence otherRestrictions © UK Centre for Ecology & Hydrology otherRestrictions If you reuse this data, you should cite: House, A.R., Roberts, C., Stratford, C.J., Old, G.H., Hewitt, E.J., Bell, R., Manamsa, K., Woods, I., Williams, P., Townsend, J., Sorensen, J., Thompson, J. (2016). Groundwater levels data for the CEH River Lambourn Observatory at Boxford (01/02/2012 to 16/01/2015). NERC Environmental Information Data Centre https://doi.org/10.5285/f4b8ca09-31a7-4f20-9fc1-eb35744e28d6 textTable English utf8 environment inlandWaters elevation geoscientificInformation 2012-02-01 2015-01-16 -1.386 -1.38 51.442 51.448 Comma-separated values (CSV) NERC EDS Environmental Information Data Centre Maclean Building, Benson Lane, Crowmarsh Gifford Wallingford Oxfordshire OX10 8BB UK info@eidc.ac.uk distributor https://data-package.ceh.ac.uk/data/f4b8ca09-31a7-4f20-9fc1-eb35744e28d6 Download the data Download a copy of this data download https://data-package.ceh.ac.uk/sd/f4b8ca09-31a7-4f20-9fc1-eb35744e28d6.zip Supporting information Supporting information available to assist in re-use of this dataset information dataset dataset Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 An existing gridded piezometer array originally installed by CEH in February 2012 was numbered 1-15. Supplemental piezometers to the same design specification were added in May 2013 to target observed temperature anomalies (locations 16-21). All locations comprise separate peat (P) and gravel (G) piezometers, with the exception of location 8 where the peat was too thin to complete an installation. Gravel piezometers were screened approximately 2.5-3.5 m below ground level (bgl) while peat piezometers were screened across the entire peat thickness. Peat piezometers in the pre-existing array were installed with the slotted screen extending above ground level, while bentonite was used to seal new piezometers with closed screens above ground level. Chalk (C) boreholes are also located at sites 3, 22 and 23; these were screened at 9.5-10.0, 8.0-9.0 and 5.0-6.0 m bgl, respectively. At selected piezometers groundwater heads were monitored every 15 minutes using either In-Situ Level Troll 500sTM or SWS DiversTM installed to a consistent depth of 3 m bgl in gravel piezometers and to the base of the peat in peat piezometers. Groundwater heads were routinely checked at all piezometers by manually dipping observed water levels to quality control logged data susceptible to drift. Piezometers were not anchored to bedrock, with the possible consequence that datums for water levels, taken at the top of piezometers, could move with the expansion and contraction of the peat due to saturation. Though it has been suggested that shallow (<0.5 m) peat generally possesses low compressibility, piezometer elevations were surveyed at periods of low (November 2013) and high (April 2014) water table level to ascertain any vertical movement. Surveys were carried out using Trimble 5600 DRTM total station and Trimble R8TM differential GPS (dGPS). Three total station setups were positioned with dGPS based on line of sight to fixed benchmark points, and to enable best coverage. Selected piezometers were included in the surveys based on line of sight to total station setups. Results from the surveys showed differences could be grouped dependent on instrument setup. Mean differences for setups 1, 2, and 3 were 0.019, 0.000 and 0.006 m, respectively, which indicate systematic error and are likely due to inaccuracies in the Trimble R8TM GPS receiver due to obstructions, satellite geometry or atmospheric conditions. Variance around the means was not more than 0.003 m, within the accuracy for the Trimble 5600 DRTM total station. Hence, piezometer movement due to peat compressibility with saturation was discounted.