CWRR Projects

 

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M.Bruen, P O'Connor, Bat Masterson, Julie Anne Stockes, Benoit Parmentier

Questions to be answered:

  • are failures of the microbial water quality of bathing sites to comply with the EU Directive on Bathing Water (1976) due to rainfall related runoff from adjacents catchments?
  • is this effect related to land uses in the catchment area?

Case study:
The study was conducted in the Afon Rheidol and Afon Ystwyth catchments in north Ceredigion, Wales and in the Dargle catchment in North Co. Wicklow, Ireland.

Deliverables:

  • collection and statistical analysis of past water quality data, rainfall and other related environmental parameters showed relationships between these parameters and bathing site water quality
  • indicator bacteria budgets were prepared to show the number of organisms coming from the different catchments sources which might impact on bathing water quality. In general, the numbers were greatly increased as a result of rainfall events, and there was coincident deterioration in bathing site microbial water quality
  • Mathematical models were used to represent the impacts of land use and the influence of rainfall on river water quality within the catchment, to make more clear their likely effects on bathing sites

Benefits:

  • transfer of information and share of expertise between partners
  • construction of tools for vulnerability assessment
  • enhanced information for the management of inter-regional recreational amenity and for promotion if their sustainable development

Results published in the Maritime Ireland/Wales INTERREG II Report Series.

Sponsors:
EU- Interreg II program

M.Bruen, A. Dowley, A. Taskinen

The ARC-INFO Geographical Information System is used to develop a series of models to estimate surface runoff, sediment and contaminant generation in small agricultural catchments.

The implications of scale, process variability, data requirements model formulation and accuracy are assessed and applied to catchments in Finland and the Czech Republic

Sponsors:

UCD Centre for Water Resources Research,
University College Galway
EU- Corinne Programme

M.Bruen, M. Rogers

New and objective methods for selecting between project options based on comprehensive environmental impact assessments are developed and applied in a practical Civil Engineering setting. Methods for taking account of the uncertainties in impact prediction are emphasised.

Sponsors:

UCD Centre for Water Resources Research,
Dublin Institute of Technology

M.Bruen, J.C.I.Dooge, B. Parmentier

Methods are developed for integrating the output from refined limited area high resolution meteorological models with hydrologic catchment models and hydraulic channel models to provide useful forecasts of severe floods. A practical flood forecasting system is developed for such catchments and its performance assessed. (5 research teams in 3 countries coordinated by M.Bruen)

Sponsor:

European Commission, Environment & Climate programme

J.C.I. Dooge, M.Bruen, A.Dowley

Joint research projects with the Hydrologic Systems Group is focused primarily on rating curves for unsteady open channel flow. The influence of the downstream boundary and the shape, magnitude and duration of the flood wave are investigated. Finite difference models of both the full St. Venant equations and of a linearised form of the equations are used.

Sponsors:

UCD Centre for Water Resources Research
Technical University of Cracow

M.Bruen, M.M.Saeed

Methods for characterising hydraulic properties of heterogenous porous media are investigated and incorporated into models suitable for simulating contaminant transport in groundwater. In particular, procedures for adequately modelling fissure and karst type permeabilities are investigated. Statistical correlation and fractal formulations are assessed

Sponsor:

UCD Centre for Water Resources Research

M.Bruen, M.M.Saeed

The hydraulic interaction of rivers with their beds, banks and associated aquifers are investigated with particular emphasis on periods of extremes of flows, both floods and low flows. A modelling formulation is developed which is capable of inclusion into a decision support system for water resources management at basin scale.

Sponsor:

UCD Centre for Water Resources Research

M.Bruen, M.M.Saeed

Numerical models of flood flows with strong two or three dimensional character are investigated with an emphasis on testing and comparison with field measurements and hydraulic model studies.

Sponsor:

UCD Centre for Water Resources Research

M.Bruen, G. Sheehan

New data, collected since the publication of the Flood Studies Report is analysed to determine if any modifications to current drainage design procedures in Ireland are required.

Sponsor:

UCD Centre for Water Resources Research

M.Bruen, D.Heagney

Various new multicriteria decision support procedures are assessed for suitability for water resources applications. The ELECTRE and Analytical Hierarchy Process families of methods are applied in a number of case studies.

Sponsor:

UCD Centre for Water Resources Research

M.Bruen, B. Dunphy

The various structural and non-structural options for flood control and damage limitation in Ireland are studied and assessed. Recommendations for future directions, particularly involving integrated floodplain management are developed.

Sponsor:

UCD Centre for Water Resources Research

M.Bruen, J.C.I. Dooge

An hydrologically realistic model of water movement at the soil-vegetation-atmosphere interface is adopted for use as a lower boundary condition for a General Circulation Model. Richards equation is linearised and discretised to give an efficient computational scheme. The long term properties of the resulting combined model is studied with a view to using it for climate change studies.

Sponsor:  EU - European Climate Computer Network through Laboratoire de Meteorologie Dynamique, Paris

M.Bruen, M.McCartaigh

The groundwater resources of Ireland are assessed in terms of the quantity of water available and its quality. Water balances are calculated for selected catchments to determine annual recharge rates with a view to specifying sustainable yields. The geographical distribution of groundwater resources are compared with existing surface water sources and current and projected demands for water in order to identify future key problem areas for water supply.

Sponsors:
UCD, Centre for Water Resources Research
Environmental Protection Agency

M.Bruen, V.Dodd, J. Manning

A detailed study of municipal and non-hazardous waste arisings is undertaken for the Republic of Ireland. This required a detailed questionnaire survey of local authorities and waste contractors as well as a comprehensive waste-composition survey at a number of selected locations. Statistical analysis of the results and comparisons with previous surveys give detailed information on the current position on waste production in Ireland and its trends. This information is used to form the basis of a National Waste Database for Ireland to be maintained and used by the Environmental protection Agency.

Sponsor:
Environmental Protection Agency / M.C. O'Sullivan

A.Dowley, M.Bruen , J.Y. Zhang

A decision support system, based on the ARC-INFO Geographical Information System is constructed for use in small catchments. It includes the effects of runoff and channel routing and contaminant transport in surface waters. It is integrated into the GIS and written primarily in the ARC Macro Language. Calls to external computational/modelling subroutines are used for the detailed calculations. The GISs user interface is used to accept instructions and present results.

Sponsors:
Dublin Corporation
University College Galway
EU-Corinne project

Ahmed Nasr

Keywords: catchment modelling, water quality and quantity, best management practices, phosphorous modelling, Geographical Information System (GIS)