Dear Mr Kumar,

My name is David Garces and I work in Florida Atlantic
University (Fl, USA) in groundwater models (mostly
with SEAWAT). I really like to see your document,
specially since the model was done with FEFLOW, a code
we have never used at the lab.


Regards

David



--- "C. P. Kumar" <cpkumar@...> wrote:

> Dear Member,
>
> I am pleased to inform that I have recently
> completed
> the study "Modelling of a Coastal Aquifer using
> FEFLOW". A brief introduction of the study is given
> below.
>
> Coastal tracts of Goa (India) are rapidly being
> transformed into settlement areas. The poor water
> supply facilities have encouraged people to have
> their
> own source of water by digging or boring a well.
> During the last decade, there have been large-scale
> withdrawals of groundwater by builders, hotels and
> other tourist establishments. Though the seawater
> intrusion has not yet assumed serious magnitude, but
> in the coming years it may turn to be a major
> problem
> if corrective measures are not initiated at this
> stage. It is necessary to understand how fresh and
> salt water move under various realistic pumping and
> recharge scenarios. Objectives of the study include
> simulation of seawater intrusion in a part of the
> coastal area in Bardez taluk of North Goa,
> evaluation
> of the impact on seawater intrusion due to various
> groundwater pumping scenarios and sensitivity
> analysis
> to find the most sensitive parameters affecting the
> simulation.
>
> For the study, a finite-element model (FEFLOW) was
> used for model simulations. The FEFLOW is an
> interactive finite element simulation system
> (Version
> 5.1) for three-dimensional (3D) or two-dimensional
> (2D), i.e. horizontal (aquifer-averaged), vertical
> or
> axi-symmetric, transient or steady-state, fluid
> density- coupled or linear, flow and mass, flow and
> heat or completely coupled thermohaline transport
> processes in subsurface water resources (groundwater
> systems).
>
> Salient conclusions of the study are given below.
>
> (1) Presently, seawater intrusion in Bardez taluk of
> North Goa is confined only upto 290 m from the coast
> under normal rainfall conditions and present draft
> pattern. It may slightly extend farther for low
> rainfall years.
>
> (2) Seawater intrusion may further advance inland if
> withdrawals of groundwater by builders, hotels and
> other tourist establishments continue to increase in
> the coming years.
>
> (3) Groundwater salinity needs to be continuously
> monitored near the coastal area, especially within 2
> km from the coast.
>
> (4) Corrective measures with proper planning and
> management of groundwater resources in the area need
> to be initiated so that it may not turn to be a
> major
> water quality problem in the coming times.
>
> (5) The model is very sensitive to hydraulic
> conductivity and dispersivity values. Field and
> laboratory investigations need to be undertaken for
> measurement of these parameters for use in further
> modelling studies.
>
> (6) The study will guide in making management
> decisions to monitor and control seawater intrusion
> and planning of groundwater development in the area.
>
>
> I can send the complete report (in pdf format) by
> e-mail to the interested persons. Your comments or
> suggestions are welcome.
>
> Regards
> Kumar
> ================================================
> C. P. KUMAR
> Scientist 'E1'
> National Institute of Hydrology
> Jal Vigyan Bhawan
> Roorkee - 247667 (Uttarakhand)
> INDIA
>
> Web Page : http://www.angelfire.com/nh/cpkumar/
> ================================================
> Unfold the Goddess Within:
> http://groups.yahoo.com/group/Shambhavi/
> ================================================