Geoscience Reference
In-Depth Information
Figure 6.8
Predicted time series of water table levels for the four recording boreholes in the Saeternbekken
MINIFELT catchment, Norway, using global parameters calibrated on catchment discharge and recording
borehole data from an earlier snow-free period in October-November 1987 (after Lamb et al., 1997, with
kind permission of John Wiley and Sons).
These results are reasonable but could perhaps be improved in a number of ways. The need for some
surface depression storage has already been noted. The steady state assumption of the TOPMODEL index
approach may not be appropriate. It is also known that soil heterogeneity can be an important source
of variability in hydrological response. In the case of these water table predictions, it might be possible
to improve the simulations by allowing for some local variability in the transmissivity function. This
possibility was investigated for this catchment by Lamb
et al.
(1997).
