This report by Adas-Eftec reviews a range of models and ecological, forestry and economic evidence on woodlands’ contribution to regulating water quality and quantity and proposes a number of options for conducting a valuation study on these benefits.

A valuation study would require the physical effects of woodland on the water environment to be quantified and subsequently linked to valuation data and methods. This report therefore evaluates models, methodologies and data sources that could quantify the physical effects and identifies a range of valuation methods for estimating an economic value for these effects.