Non-steady flow in open prismatic 
channels, solving the St. Venant  
equations using implicite scheme. 
This model was implemented  
using Java 1.1 
 

Steady flow in open prismatic  
channels. 
This model was implemented 
using CGI scripts in Perl 
(only on IHE intranet) 
 

GIS_hydro is an appletthat  calculates and displays the slope, flow direction and flow accumulation for an simple elevation raster map. Can be used for simple distributed hydrological catchment modellling. This applet was implemented in Java JDK 1.1.6. 

Artificial Neural Network Tool

NNN is a general pupose neural network modelling tool. 
It allows creation of NNs with one hidden layer. 
Two types of networks, namely Error Backpropagation and Radial Basis Function networks are implemented in this version. In the case of Error Backpropagation Network all neurons are of sigmoid-type, and the direct input-output link may be also made; while the mapping function of the Radial Basis Network is of Gaussian type for the hiden layer and linear for the output layer.

Search_agent is a simple intelligent software agent that assist users in finding modelling software, experts and books on the WWW for solving water-related and environmental problems. It demonstrates the potential power of implementation of the agent-based technology into next generation hydroinformatic systems. This agent was build using LaPro software.