Model:TOPOG

TOPOG

Also known as
Model type	Tool
Model part of larger framework

Incorporated models or components:

Spatial dimensions	2D, 3D
Spatial extent	Regional-Scale, Landscape-Scale, Watershed-Scale
Model domain	Hydrology, Terrestrial
One-line model description	TOPOG is a terrain analysis-based hydrologic modelling package
Extended model description	TOPOG describes how water moves through landscapes; over the land surface, into the soil, through the soil and groundwater and back to the atmosphere via evaporation. Conservative solute movement and sediment transport are also simulated. The primary strength of TOPOG is that it is based on a sophisticated digital terrain analysis model, which accurately describes the topographic attributes of three-dimensional landscapes. It is intended for application to small catchments (up to 10 km2, and generally smaller than 1 km2). We refer to TOPOG as a "deterministic", "distributed-parameter" hydrologic modelling package. The term "deterministic" is used to emphasise the fact that the various water balance models within TOPOG use physical reasoning to explain how the hydrologic system behaves. The term "distributed-parameter" means that the model can account for spatial variability inherent in input parameters such as soil type, vegetation and climate.

Keywords:	landscape, catchment,

First name	Richard
Last name	Silberstein
Type of contact	Model developer
Institute / Organization	University of Western Australia
Postal address 1	35 Stirling Hwy
Postal address 2
Town / City	Nedlands
Postal code	6009
State
Country	Australia
Email address	richard.silberstein@bigpond.com
Phone	+61 400666334
Fax

Supported platforms	Unix
Other platform
Programming language	Fortran77, C
Other program language
Code optimized	Single Processor
Multiple processors implemented
Nr of distributed processors
Nr of shared processors
Start year development	1987
Does model development still take place?	Yes
If above answer is no, provide end year model development
Model availability	As code
Source code availability (Or provide future intension)	Through web repository
Source web address	http://www-data.wron.csiro.au/topog/
Source csdms web address
Program license type	Other
Program license type other	PRODUCT LICENSE AGREEMENT, see website
Memory requirements	at least 32 MB core memory, preferably 64 MB
Typical run time	--

Describe input parameters	See website, too many to describe: http://www-data.wron.csiro.au/topog/
Input format	ASCII, Binary
Other input format
Describe output parameters	--
Output format	ASCII, Binary
Other output format
Pre-processing software needed?	No
Describe pre-processing software
Post-processing software needed?	No
Describe post-processing software
Visualization software needed?	No
If above answer is yes
Other visualization software

Describe processes represented by the model	See website, too many to describe: http://www-data.wron.csiro.au/topog/
Describe key physical parameters and equations	See website, too many to describe: http://www-data.wron.csiro.au/topog/
Describe length scale and resolution constraints	It is intended for application to small catchments (up to 10 km2, and generally smaller than 1 km2).
Describe time scale and resolution constraints	--
Describe any numerical limitations and issues	--

Describe available calibration data sets
Upload calibration data sets if available:
Describe available test data sets
Upload test data sets if available:
Describe ideal data for testing

Do you have current or future plans for collaborating with other researchers?	--

Is there a manual available?	Yes
Upload manual if available:
Model website if any	http://www-data.wron.csiro.au/topog/
Model forum / discussion board	Feed back and bugs can be reported through the website

Comments	This questionnaire is filled out by Albert Kettner, based on the TOPOG website

This part will be filled out by CSDMS staff

Can be coupled with:

Model info

Authors

Richard Silberstein

Rahman

Source code

Model citations

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Other models by author

Featured publication(s)	Year	Model described	Type of Reference	Citations
O'Loughlin, E. M.; 1986. Prediction of Surface Saturation Zones in Natural Catchments by Topographic Analysis. Water Resources Research, 22, 794–804. 10.1029/WR022i005p00794 (View/edit entry)	1986	TOPOG	Model overview	566
Vertessy, R.A.; Hatton, T.J.; O'Shaughnessy, P.J.; Jayasuriya, M.D.A.; 1993. Predicting water yield from a mountain ash forest catchment using a terrain analysis based catchment model. Journal of Hydrology, 150, 665–700. 10.1016/0022-1694(93)90131-R (View/edit entry)	1993	TOPOG	Model overview	146
See all publications of TOPOG