We have extensive experience in resource assessment utilising both modelled and observed data. We continue to develop methodologies for estimation of flow statistics within ungauged catchments with our staff being the authors of all recognised design methods within the UK since the 1980s. Complementary to this we continue to develop rainfall-runoff models for providing natural daily flow time series. These include bespoke catchment rainfall-runoff models calibrated using local gauged data and a national model which can be applied within any ungauged catchment to estimate river flows.

We have undertaken catchment and national scale determinations of water use. Our projects include the use of LowFlows to support the WFD initial characterisation within England and Walesand the development of river basin management plans by both the Environment Agency and the Scottish Environment Protection Agency. This is currently been refined through the full characterisation and evaluation of water use within England and Wales on behalf of the Environment Agency. Through this work we are fully familiar with the Environment Agency's CAMS process and accompanying Resource Assessment Methodology.

The rainfall-runoff models have been used for a number of projects to improve understanding of the impacts of climate and land use change. On behalf of the Environment Agency we have used the national model to complete the first assessment of climate change on river flows at a national scale by the 2050s. The outcomes of this assessment have been used to underpin the Environment Agency’s 2009 Water Resources Strategy.

We are national experts in the assessment of drought severity and the impacts on resource availability. We have wide experience of drought and low flow investigations in the UK, mainland Europe and overseas in hydrological regimes which include Temperate, Mediterranean and Himalayan environments.

We have constructed models for reservoir yield assessment within several resource systems in the UK and have developed a generic approach (WHS-RESSIM) for the modelling of systems with sparse data. This system has been applied to over 150 reservoir systems to evaluate the impacts on downstream flow regimes. Our consultancy experience in reservoir modelling extends from the use of existing upland reservoirs for hydropower generation through to resource determinations for setting the drought triggers for the London Reservoirs.

Please contact us to discuss your requirements.