NS 
hydrological modeling 
lly allows users (i) to 
to change calibration 
rovides a user friendly 
ery data intensive and 
l of QGIS allowed 
nt manner to develop a 
ugin also allows further 
nhance its efficiency to 
OSS tools and software 
ietary GIS tools when it 
ecific applications for 
in this area can be 
f semantic assimilation 
ing overheads in data 
sensing data and their 
on Systems: Principles, 
nent, pp. 451-466. 
ntegrating models and 
pcomputation, pp. 331- 
T. Jj. Bohn; F. Su, J. 
and E. F. Wood, 2010. 
iltration Capacity (VIC) 
Basis Document for 
in review). 
9. A spatiotemporal data 
: systems. International 
Science, 23(2), pp. 233- 
itasova, H., Neteler, M., 
‘ree and Open Source 
ntal Modelling and 
egrated Environmental 
2008. Open-source GIS 
5-820. Springer Science 
ver Survey | Netcraft” 
05/02/may-2011-web- 
jara, M., 2009. Current 
Novatica, X(2), pp- 43- 
ng System and the Free 
Voices from the open 
t Associates CA. 
Steiniger, S., & Bocher, E., 2009. An overview on current free 
and open source desktop GIS developments. International 
Journal of Geographical Information Science, 23(10), pp. 
1345-1370. 
Steiniger, S., & Hay, G. J., 2009. Free and open source 
geographic information tools for landscape ecology. Ecological 
Informatics, 4(4), pp. 183-195. 
Su, D. Z, & Maggio, R. C., 1999, Integrating GIS with 
hydrological modeling: practices, problems, and prospects. 
Computers, environment and urban systems, 23(1), pp. 33-51. 
ACKNOWLEDGMENT 
This work is partly funded by Indian Space Research 
Organisation — Geosphere Biosphere Program (IGBP). Thanks 
are due to Dr P.S. Roy, Dr V.K. Dadhwal, Prof P.L.N. Raju, Dr 
S. K. Srivastav, Dr V. Garg and Drs T. Zahra for their constant 
guidance, support and encouragement. Thanks to Dr Rajan 
(IIT-H) and Dr S. P. Aggarwal who introduced me to Python 
GUI dev and VIC respectively.