High-resolution water quality data recorded at the outlet of the Blackwater Drain, Norfolk, between 2011 and 2019 by an in-situ automated bankside monitoring station.
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To provide evidence to test the hypothesis that it is possible to cost effectively reduce the impact of agricultural diffuse water pollution on ecological function while maintaining food security t
hrough the implementation of multiple on-farm measures across whole river catchments using local expertise to solve local problems. ... [more] View project Diffuse and point source pollution from agriculture are major drivers behind the degradation of freshwater systems, causing an array of detrimental economic and environmental impacts that threaten
the ability of these systems to provide ecosystem services. Achieving reductions in agricultural water pollution requires changes in land management practices and the implementation of mitigation measures to tackle the principal reasons for water quality failure.
This Special Issue of Water seeks to evaluate the extent to which on-farm mitigation measures can cost-effectively reduce the impacts of agricultural water pollution on river ecology while maintaining food production capacity. Contributions are invited across this theme and could include (but are not limited to) studies that evaluate the effectiveness of sediment, nutrient, or pesticide mitigation measures; studies that demonstrate the value of high-resolution monitoring for improving our understanding of hydrological and geochemical functioning and pollutant pathways; studies that investigate the spatial and temporal dynamics of agricultural water pollution; studies exploring the responses of aquatic organisms to agricultural pollution exposure; and social science studies exploring ways to influence land manager behaviour and environmental awareness around agricultural water pollution. ... [more] View project Demonstration Test Catchments (DTC) is a UK government-funded project designed to provide robust evidence regarding how diffuse pollution from agriculture can be cost-effectively controlled to impr
ove and maintain water quality in rural river catchment areas.
The DTC project is currently working in four study catchments across England, which are maprepresentative of 80% of UK soil/ rainfall combinations and the major farm types in England and Wales. The catchments were selected in order to build on existing infrastructure, datasets, knowledge and farming contacts developed through previous and ongoing initiatives, which have not previously been well linked. The catchments are also undergoing enhanced monitoring through the England Catchment Sensitive Farming Delivery Initiative.:
The Eden in Cumbria
The Wensum in Norfolk
The Avon in Hampshire
The Tamar in the Devon/Cornwall
Data and evidence from the three DTCs are being archived and managed through The DTC Archive Project ... [more] View project October 2016 · Environmental Science & Policy
Effective management of water quality in large rivers requires information on the influence of activities within the catchment (urban and rural) throughout the whole river basin. However, traditional water quality monitoring programmes undertaken by individual agencies normally relate to specific objectives, such as meeting quality criteria for wastewater discharges, and fail to provide
... [Show full abstract] information on basin-scale impacts, especially in transboundary river basins. Ideally, monitoring in large international river basins should be harmonised to provide a basin-scale assessment of sources and impacts of human activities, and the effectiveness of management actions. This paper examines current water quality issues in the Danube River Basin and evaluates the approach to water quality monitoring in the context of providing information for a basin-wide management plan. Lessons learned from the monitoring programme in the Danube are used to suggest alternative approaches that could result in more efficient generation of water quality data and provide new insights into causes and impacts of variations in water quality in other large international river basins. Read more March 2021
This dataset contains riverine hydrochemical data generated at monthly intervals between 2010 and 2016 from 20 sites across the River Wensum catchment, UK. Data were obtained via manual grab sampling of river water from each of the 20 locations across the catchment, followed by subsequent laboratory analysis to determine concentrations of nutrients, carbon, major ions and suspended solids.
Read more June 2019
This chapter provides an introduction to the ecosystem services and assessment methods associated with catchment water resources. It considers the main pressures on such resources and the different techniques that can be used to monitor and evaluate the state of water quality and quantity in a catchment. Issues associated with the design of monitoring programmes and tools for modelling water
... [Show full abstract] resources are also reviewed. Read more June 2019
This chapter discusses the range of measures that can be used to mitigate the impacts of water pollution and flooding. It makes a distinction between source measures which aim to reduce the amount of water or pollutant initially mobilised, pathway interventions which seek to slow the flow of pollutant enriched water once it has become mobilised and methods to protect receptor water bodies which
... [Show full abstract] are intended to reduce peak flows or prevent pollutants moving further through a catchment. In many European countries the policies and programmes used to increase the adoption of such measures are heavily influenced by EU obligations stemming from the Floods, Nitrates and Water Framework Directives. Typical approaches used involve a combination of regulation, financial incentives and advice provision. There are also a range of tools that can be used to model the potential effects of mitigation measures and a number of research programmes generating findings that may be of value to the landscape planner. Read more March 2020 · Science of The Total Environment
In 2010, the UK government established the Demonstration Test Catchment (DTC) initiative to evaluate the extent to which on-farm mitigation measures can cost-effectively reduce the impacts of agricultural water pollution on river ecology whilst maintaining food production capacity. A central component of the DTC platform was the establishment of a comprehensive network of automated, web-based
... [Show full abstract] sensor technologies to generate high-temporal resolution (30 min) empirical datasets of surface water, groundwater and meteorological parameters over a long period (2011–2018). Utilising 8.9 million water quality measurements generated for the River Wensum, this paper demonstrates how long-term, high-resolution monitoring of hydrochemistry can improve our understanding of the complex temporal dynamics of riverine processes from 30 min to annual timescales. This paper explores the impact of groundwater-surface water interactions on instream pollutant concentrations (principally nitrogen, phosphorus and turbidity) and reveals how varying hydrochemical associations under contrasting flow regimes can elicit important information on the dominant pollution pathways. Furthermore, this paper examines the relationships between agricultural pollutants and precipitation events of varying magnitude, whilst demonstrating how high-resolution data can be utilised to develop conceptual models of hydrochemical processes for contrasting winter and summer seasons. Finally, this paper considers how high-resolution hydrochemical data can be used to increase land manager awareness of environmentally damaging farming operations and encourage the adoption of more water sensitive land management practices. Read more Last Updated: 05 Jul 2022
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