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Predicting improved optical water quality in rivers resulting from soil conservation actions on land

journal contribution
posted on 2024-06-21, 03:49 authored by John Dymond, Robert Davies-Colley, Andrew Hughes, Christoph Matthaei
Soil conservation not only conserves soil but it improves the water clarity of water in rivers. This improvement may be estimated by the methods shown in this paper. The approach is demonstrated on the Wairua River in Northland, New Zealand. For this river we show that visual clarity would increase relatively by approximately 1.4 times the relative reduction of sediment load. Median visual clarity would increase from 0.75m to 1.25m (making the river more often suitable for swimming) after a sediment load reduction of 50% associated with widespread soil conservation on pastoral land.

Funding

Funded by the New Zealand Ministry for Business, Innovation and Employment's Our Land and Water National Science Challenge (Toitū te Whenua, Toiora te Wai) as part of project Cascade of Soil Erosion

History

Publication date

2017-06-07

Language

  • English

Does this contain Māori information or data?

  • No

Journal title

Science of The Total Environment

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