Groundwater levels data for the CEH River Lambourn Observatory at Boxford (01/02/2012 to 16/01/2015)
bibliographic citation: 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
description: 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.
provenance: ProvenanceStatement
  label: 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…
spatial: Location
temporal: PeriodOfTime
  start date: 2012-02-01
  end date: 2015-01-16
publisher: NERC Environmental Information Data Centre
subject: River Lambourn Observatory
subject: Hydrology
type: Dataset
available: 2016-10-19
landing page: https://doi.org/10.5285/f4b8ca09-31a7-4f20-9fc1-eb35744e28d6
license: OGL-UK-3.0.ttl
rights: RightsStatement
  copyright notice: copyright UK Centre for Ecology & Hydrology
access rights: UNRS
theme: Hydrology
distribution:
  access URL: https://data-package.ceh.ac.uk/data/f4b8ca09-31a7-4f20-9fc1-eb35744e28d6
  license: OGL-UK-3.0.ttl
  rights: RightsStatement
    copyright notice: copyright UK Centre for Ecology & Hydrology
  access rights: UNRS
  format: Comma-separated values (CSV)
language: en

Old, G.
type: Person
family name: Old
given name: Gareth
member: UK Centre for Ecology & Hydrology

NERC Environmental Information Data Centre
type: Organization

House, A.R.
type: Person
family name: House
given name: A.R.
member: UK Centre for Ecology & Hydrology

Roberts, C.
type: Person
family name: Roberts
given name: C.
member: UK Centre for Ecology & Hydrology

Stratford, C.J.
type: Person
family name: Stratford
given name: C.J.
member: UK Centre for Ecology & Hydrology

Old, G.H.
type: Person
family name: Old
given name: G.H.
member: UK Centre for Ecology & Hydrology

Hewitt, E.J.
type: Person
family name: Hewitt
given name: E.J.
member: UK Centre for Ecology & Hydrology

Bell, R.
type: Person
family name: Bell
given name: R.
member: British Geological Survey

Manamsa, K.
type: Person
family name: Manamsa
given name: K.
member: British Geological Survey

Woods, I.
type: Person
family name: Woods
given name: I.
member: British Geological Survey

Williams, P.
type: Person
family name: Williams
given name: P.
member: British Geological Survey

Townsend, J.
type: Person
family name: Townsend
given name: J.
member: British Geological Survey

Sorensen, J.
type: Person
family name: Sorensen
given name: J.
member: British Geological Survey

Thompson, J.
type: Person
family name: Thompson
given name: J.
member: University College London

Hydrology
type: Concept

UK Centre for Ecology & Hydrology
type: Organization

British Geological Survey
type: Organization