Documented spatial data set containing the subdivision of the basins into groundwater systems and subsystems, the selected locations per subsystem and a description of these sites, available data and projected additional measurements and equipment

The establishment of tools for trends analysis in groundwater is
essential for the prediction and evaluation of measures taken within
context of the Water Framework Directive and the draft Groundwater
Directive. This report describes the spatial data sets which will be
used for the purpose of detection, aggregation and extrapolation of
temporal trends in groundwater quality. Trend analysis methods will
be applied and tested at various scales and in various
hydrogeological situations. The report contains a description of the
studied sub-basins in TREND 2, including information on
hydrogeology, land use and pressures, available data and projected
additional measurements. Major differences between the sub-basins
and the data sets are described to examine consequences for the
work on trend detection. One of the challenges for TREND 2 is to
define criteria for the application of various statistical and
deterministic trend approaches for a range of hydrogeological
conditions, spatial scales and types of groundwater monitoring. An
overview of these conditions, scales and monitoring types is provided
in the present report.