Distributed Hydrologic Modelling of the Grey River and Tributaries

David G. Tarboton

Seminar describing work done during November 1997 to June 1998, while a Visiting scientist at the National Institute for Water and Atmospheric Research, Christchurch, New Zealand.

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Table of Contents

Distributed Hydrologic Modelling of the Grey River and Tributaries 

Research Interests 

Objectives 

Overview 

Location Map of the Grey River 

Grey Digital Elevation Model 

Channel Network Extraction  

Order 5 subbasin delineation 

Order 2 subbasin delineation 

Vegetation 

Depth Weighted Macroporosity 

Rain and streamflow gauges 

Rainfall 

Rainfall interpolation 

Topmodel (Based on Beven and Kirkby, 1979 and later) 

Implementation (additions/modifications) 

Potential Evapotranspiration (following Maidment D. R. (editor), 1993, Handbook of Hydrology, Chapter 4 on Evaporation by W J Shuttleworth.) 

PPT Slide 

Interception (adapted following Ibbitt, 1971) 

Soil Zone 

Pattinson Creek 

PPT Slide 

PPT Slide 

PPT Slide 

PPT Slide 

PPT Slide 

PPT Slide 

Grey at Dobson 

PPT Slide 

Rainfall (lack of simple) dependence on elevation 

Parameter assignment based upon LRI data 

Ahaura - Order 3 ’l’Ahaura at Gorge - order 3 

Ahaura order 3 subbasin K (m/hr) 

Ahaura at Gorge - order 3 

Ahaura order 3 subbasin rainfall 

Ahaura subbasin order 3 model ET 

Ahaura subbasin order 3 model runoff 

Summary and Conclusions 

Are there any questions ?

Email: dtarb@cc.usu.edu 

Home Page: http://www.neng.usu.edu/dtarb/