The impact of urban groundwater upon surface water - eTheses ...

REVIEW
owing to their widespread detection and/or application, were the pesticides atrazine, simazine,
isoproturon, chlortoluron and tri-allate.
Hooda et al. (1997) found the impact of diffuse phosphorous loading on six small catchments
in Scotland to be greatest during summer groundwater-fed baseflow conditions. Birtles,
(1978) modelled water quality in the River Severn by separating the river hydrographs into
discrete components each of which had separate, conservative, surface water quality
parameters. These comprised, direct run-off, baseflow from the Triassic Sandstone deposits,
baseflow from superficial deposits and effluent returns. Younger et al. (1993) investigated
groundwater/surface water interactions in the Thames basin.
Research currently in progress in the UK is summarised by Young et al. (2002). New research
initiatives are under way to provide support for integrated groundwater/surface water
monitoring and assessment for sustainable catchment management. These include the
Lowland Catchment Research Programme, LOCAR, (Peach et al., 2000, LOCAR, 2002) and
the Catchment Hydrology and Sustainable Management (CHASM) group which will
investigate highland catchments (CHASM, 2002). The recently concluded Land-Ocean
Interaction Study (LOIS, 1998) was undertaken to quantify the chemical fluxes entering the
North Sea from the surrounding countries, including the UK. Extensive data sets were
collected for the Humber catchment which incorporate the groundwater contribution to the
total geochemical flux to the sea. Most of the current research is focussed on rural catchments
and there is a lack of ongoing research into urban groundwater/surface water interactions.
21