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Journal of Hydroinformatics

Official Journal of the IAHR-IWA Joint Committee on Hydroinformatics

Volume 4 Number 2
April 2002

Contents

i
On definitions
Michael B. Abbott
73
Editorial
Michael B. Abbott
75
Calculation of time of concentration for hydrologic design and analysis using geographic information system vector objects
Jonathan I. Green and E. James Nelson
83
Evolutionary algorithms for multiobjective evaluation of watershed management decisions
Misgana K. Muleta and John W. Nicklow
99
Conceptual user interface for the land management system
James Westervelt and Jeffery Holland
115
An optimization approach to wastewater systems planning at regional level
Joaquim Sousa, Alexandra Ribeiro, Maria da Conceição Cunha and António Antunes
125
Comparative application of artificial neural networks and genetic algorithms for multivariate time-series modelling of algal blooms in freshwater lakes
Friedrich Recknagel, Jason Bobbin, Peter Whigham and Hugh Wilson