Pontbren Llyn Hir study site soil water tension data

This dataset is from an array of tensiometers measuring soil water tension installed at the Llyn Hir monitoring site within the Pontbren study site in mid Wales, UK. Three tensiometers were installed at 10 cm, 30 cm, and 50 cm depth and sampled every 10 minutes between September 2008 to December 2009 as part of the Pontbren Catchment Study Land Use and Management Multi-Scale Experimental Programme. The Llyn Hir site is an area of unimproved grassland adjacent to the Llyn Hir rain gauge and Llyn Hir outflow stream gauging site (Site 8). Soil water tension data (cm H2O) are provided in the form of .txt files and generally split into 6 month blocks. Associated with each data point in the .txt file is a quality assurance code, QA code, in the adjacent column. Details of the dataset and the quality assurance coding system are provided in the supporting documentation.

Datasets from the rain gauges and stream monitoring system at the Llyn Hir site are also provided by the EIDC.

Publication date: 2012-04-02

Get the data


Study area
Temporal extent
2005-04-04    to    2010-12-31

Supplemental information

Other useful information regarding this dataset:

Wheater, H., Reynolds, B., McIntyre, N., Marshall, M., Jackson, B., Frogbrook, Z., Solloway, I., Francis, O. and Chell, J. 2008. Impacts of upland management on flood risk: multi-scale modelling on methodology and results from the Pontbren Experiment. FRMRC Research Report UR 16. December 2008.
Marshall, M.R., Francis, O.J., Frogbrook, Z.L., Jackson, B.M., McIntyre, N., Reynolds, B., Solloway, I., Wheater, H.S. and Chell, J. 2009. The impact of upland land management on flooding: results from an improved pasture hillslope. Hydrological Processes, 23, 464-475.

Provenance & quality

Digital data subject to manual validation procedures during capture and transfer to the main geo database and through subsequent statistical analysis and modelling. Full details provided in the 'Pontbren Catchment Study Data catalogue'.

Correspondence/contact details

Marshall, M
Centre for Ecology & Hydrology

Other contacts

Environmental Information Data Centre
NERC Environmental Information Data Centre


Spatial representation type
Tabular (text)
Spatial reference system
WGS 84


Topic categories
Climatology / Meteorology / Atmosphere , Elevation , Environment , Farming , Inland Waters
CEH Project CO2699,  CEH Water Programme,  Continuous,  Emmett Section Flooding,  Flood risk management,  Hydrology,  Pontbren,  Soil,  Soil Soil United Kingdom Wales Water,  Weekly
Environmental Monitoring Facilities