We are organizing a special session "Groundwater recharge and near-surface hydrology"at the EGU 2010 meeting in Vienna from 2-7 May.

Op donderdag 12 november as, vindt de eerste gebruikersdag plaats van het Nationaal Hydrologisch Instrumentarium. NHI is een landsdekkend modelinstrumentarium waarmee grond- en oppervlaktewaterstromingen berekend kunnen worden om op landelijke schaal strategische en operationele vragen van PBL en Waterdienst te kunnen beantwoorden.

Titel: Piekafvoerverwachtingen voor het waterschap Rijn en IJssel

The Water Resources Section of the Delft University of Technology would like to invite you to the fifty-second edition of the colloquium series “Recent Advances in Water Resources"."Improving Model Identification: Reconciling Theory with Observations & The Problem of Sufficient Statistics"and"What can we learn from thermodynamic principles for hillslope and small catchment hydrology?"

Dinsdag 24 november en woensdag 25 november 2009 vindt het 21e symposium Bodem Breed plaats.

International Workshop on Water and Health: A European PerspectiveDate:  8-9 December 2009Venue: Koblenz, GermanyAs water is our number one aliment, the quality of drinking water directly influences public health and plays a major economic role both as a tradable good and a cost factor in our healthcare system.

"Quantifying evaporation for improved Integrated Land and Water Resource Management under the National Water Act of South Africa:  A review on hydrological research in South Africa"The Water Resources Section of the Delft University of Technology would like to invite you to the fifty-first edition of the colloquium series “Recent Advances in Water Resources”.

The Boussinesq Center organizes international prestigious lectures. Leading hydrological scientists will be invited to deliver the yearly Boussinesq Lecture, addressing important hydrological themes of relevance to the Center’s research programme.

Henry Darcy Lecture 2009 & Isotopes and tracers in hydrologyThis event is co-organized by the VU University Amsterdam, the Netherlands National Committee IHP-HWRP (UNESCO & WMO), The Netherlands' Chapter of the International Association of Hydrogeologists (IAH), the Netherlands Hydrological Society (NHV) and the US National Ground Water Research and Educational Foundation (NGWREF).

"Similarity Variables for Hydrology: How Do Climate Variables Interact to Influence Seasonal Snow?"The Water Resources Section of the Delft University of Technology would like to invite you to the fiftieth edition of the colloquium series “Recent Advances in Water Resources".  

Dit najaar zal het NHI team de volgende slag maken in de ontwikkeling van het modelinstrumentarium. Een van de onderdelen is dat het ondergrond model systematisch wordt doorgenomen. We doen dat in 8 regio’s (zie onder). Per regio wordt een middag georganiseerd waarin experts intern en extern worden gevraagd om hun mening te geven en praktische voorstellen te doen voor verbetering. Vooraf daaraan wordt intern nagegaan of en hoe de REGIS schematisatie goed in het conceptuele geohydrologische model past en waar bekend is dat de landelijke schaal van REGIS wellicht aanvulling verdiend voor NHI.

"Importance of boundaries and package dealing in international negotiations"and"Groundwater management and mediation"The Water Resources Section of the Delft University of Technology would like to invite you to the forty-ninth edition of the colloquium series “Recent Advances in Water Resources”.

Wat zijn uw wensen en verwachtingen?De HELP-tabellen staan centraal in de landbouwmodule in het door STOWA ontwikkelde waternoodinstrumentarium. Ook worden ze toegepast in natschaderegelingen bij verdrogingsbestrijding. De aan de HELP-tabellen verwante TCGB-tabellen spelen een centrale rol bij het vaststellen en vergoeden van landbouwkundige droogteschade als gevolg van grondwaterwinningen.

Waterkwaliteit van Nederland als ‘afvoerputje’ van Europa historisch en plaatselijk sterk verschillend  Doordat directe informatie over de historische ontwikkeling van de waterkwaliteit veelal ontbreekt, is de ‘natuurlijke’ ecologische toestand van onze wateren niet bekend. Veel beheersmaatregelen in Nederland zijn nu afgestemd op een ideaalbeeld met voedselarm water. Deze ‘onverstoorde’ ecologische situatie heeft hier, blijkt uit onderzoek van de Universiteit Utrecht en TNO, in de afgelopen eeuwen echter zelden bestaan omdat Nederland altijd al het ‘afvoerputje’ van Europa is geweest. Doordat directe informatie over de historische ontwikkeling van de waterkwaliteit veelal ontbreekt, kennen we eenvoudigweg de ‘natuurlijke’ ecologische toestand van onze wateren niet. 

"Groundwater management and mediation"& "An iterative approach to developing a parsimonious model of subsurface stormflow based on nonlinear, hillslope-scale physics"The Water Resources Section of the Delft University of Technology would like to invite you to the forty seventh edition of the colloquium series “Recent Advances in Water Resources”.

Marcel van der Veer      Evaluating a schematization for urban areas and evaporation in the Variable Infiltration Capacity model The Variable Infiltration Capacity model (VIC) has been widely used in studies concerning large scale hydrology, for example the Adaptive Capacity to Extreme events in the Rhine basin (ACER) project, in which this research is embedded.

Klara SteklovaUniversal Multi Layer Approximator(UMLA): Calibration of groundwater models using analytically derived  gradients and neural networksIn inverse modeling of groundwater flow, hydraulic properties of the subsoil are usually subject to calibration. A classical method is to divide the space into so called zones, and calibrate values constant for each zone.

Spatial precipitation from gauges and radar, modeled with the TOPMODEL for the upper Ourthe catchmentAlthough precipitation is a process which varies both in space and time, many rainfall-runoff models make use of spatially averaged rainfall intensities. True spatially distributed rainfall estimates can be delivered by operational weather radar. This study takes a closer look at the usability of weather radar for rainfall-runoff modeling with TOPMODEL.

Op donderdag 16 april a.s. om 16:00 uur spreekt Remko Uijlenhoet zijn inaugurele rede uit als hoogleraar Hydrologie en Kwantitatief Waterbeheer aan Wageningen Universiteit.

Ecuador is a developing country in South America relatively rich in water. In the majority of the Amazonian provinces irrigation is not necessary due to dependable precipitation & low seasonality at the equator. However freshwater resource conflicts are present in such contexts as well. The Oyacachi micro catchment (88 km2) has user groups that extend beyond the geographical boundaries of the catchment & straddle the continental divide in the Andes, due to several intersectoral transfers. Uses of freshwater from the catchment include irrigation, drinking water & ecosystem maintenance. As populations increase the respective demand from each use also grows, and the draw usually comes from ecosystem maintenance

The hydrological climate change response of the Ourthe catchment modelled by the VIC and HBV modelSeveral climate scenarios predict higher temperatures and more extreme precipitation events in the 21st century. It is expected that this change in climate forcing has its impact on hydrological systems. Hurkmans et al. (2009) has showed the hydrological changes in streamflow dynamics in the Rhine basin. This thesis research is in line with this analysis, but is focused on the Ourthe river basin which is an important tributary of the Meuse basin.

Relation between geological formations and groundwater resources in the Palouse BasinAt about 1900, water abstraction from the basalt formations of the Palouse Basin was started. Groundwater levels are declining ever since, at a rate of about 30-60 cm/y.  Groundwater from the basalt layers is the major water supply for the inhabitants of the Basin. Because of the drop of the water table, the area is subject to hydrological and geohydrological research.