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TopManage: A High Resolution GIS Digital Terrain Analysis Tool to Study the Management of Flow on Farms

Lookup NU author(s): Dr Caspar Hewett, Dr Paul Quinn

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Abstract

Runoff Management is a concept that involves understanding how flow is lost from farmers' fields and how this can be changed for the purpose of pollution remediation and flood storage. In order to support this concept a software tool called TopManage has been developed to simulate hydrological flow paths which include the effects of man made features. TopManage is a high resolution GIS terrain analysis toolkit that allows the user to manipulate flows for the net benefit to the environment. This study involves a number of case studies looking at fields prone to overland flow lost and examples for fields dominated by subsurface flow and land drains. Man made features such as tramlines, tyre tracks, land drains and ditches all control runoff. These features can be altered to change the nature of the runoff on the farm, such as altering the cultivation direction. New landscape features such as ponds and new hedgerows can be used to simulate the effect of disconnecting polluting flows and increasing the buffering capacity of the land. Diffuse temporary storage ponds also offer opportunities to remediate flows, whilst still on the farm itself.


Publication metadata

Author(s): Hewett CJM, Quinn PF

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Unknown

Conference Name: 7th International Specialised Conference on Diffuse Pollution and Basin Management

Year of Conference: 2003


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