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The hydrology of the Slapton catchments

Burt, T. P. and Heathwaite, A. Louise (1996) The hydrology of the Slapton catchments. Field Studies, 8. pp. 543-557.

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Abstract

Despite adequate rainfall throughout the year, runoff is strongly seasonal in the catchments draining into Slapton Ley . This is, in part, caused by high evaporation losses in the summer months but also because the deep permeable soils function like a shallow aquifer. Streamflow falls to a low level in the summer months ; high flows resume in the winter once the large soil moisture deficit has been recharged. Despite the dominance of subsurface flow, there has been a significant increase in the incidence of surface runoff in recent years. The implications of this mixture of hydrological pathways for the quality of water draining into the Ley are briefly discussed. Slapton Ley, itself is a shallow lake basin with a very low retention time in the winter. Outflow from the lake takes place mainly through the Torcross culvert but, in summer, when the water level is low, seepage through the shingle ridge is the only significant loss. Deposition of sediment during storm events is probably important at all times of the year and especially in the Higher Ley. In terms of eutrophication, the nutrient load of summer baseflow may be most important.

Item Type: Article
Journal or Publication Title: Field Studies
Additional Information: The hydrology of the Slapton catchments 6 cites: http://scholar.google.com/scholar?num=100&hl=en&lr=&cites=9554475010838469976
Subjects:
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 49784
Deposited By: ep_importer_pure
Deposited On: 19 Sep 2011 11:01
Refereed?: Yes
Published?: Published
Last Modified: 09 Apr 2014 22:42
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/49784

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