River water quality modelling under drought situations. The Turia River case.

Transcription

1 River water quality modelling under drought situations. The Turia River case. International conference Water Resources Assessment and seasonal prediction KOBLENZ, 13 to 16 October 2015 Javier Paredes-Arquiola Javier Macián María Pedro-Monzonís Edgar Belda Ibáñez Andrea Momblanch Joaquin Andreu 1 Correspondence to: Javier Paredes-Arquiola (jparedea@hma.upv.es)

2 Presentation Research Instutute of Water and Environmental Engineering Hydraulics and Hydrology Mathematical Modelling of Flow and Transport Hydro-Geology Water Resource Engineering Hydraulic Networks and Pressure Systems Chemistry and Microbiology of Water Water Quality Assessment of Environmental Impact Forestry Science and Technology Hydrological and Environmental Modelling 2

3 index 1. INTRODUCTION 2. METHODOLOGY 3. CASE STUDY 4. CONCLUSIONS 3

4 INTRODUCTION Important impact of droughts on river basins is the worsening of water quality in river systems. Economic and environmental problems. Isolated analysis limits the action measures that can be proposed. Integrated evaluation combining water management and quality models would be desirable.

5 METHODOLOGY Software AQUATOOL Is a tool for the construction of Decision Support Systems for planning and integrated management of water resources. It can be analysed in an integrated way, and at river basin level quantitative, qualitative, economic and environmental, also incorporating other aspects, such as priorities and management rules.

6 METHODOLOGY Module SIMGES It is a model for simulation of the integrated management of water resource systems, including elements such as natural streams, aquifers, reservoirs, water conveyance facilities, irrigation, urban, hydroelectric demands, and the operating rules to manage the system.

7 METHODOLOGY Module GESCAL It is a model to simulate water quality for an entire water resources system. From the flows and volumes provided by Simges, it is able to simulate several components, with a level of complexity similar to most of the currently used water quality models.

8 CASE STUDY Turia River Basin Basin area 6394 Surface operation system 6913 Reservoir capacity 321 Consumptive demand system Average rainfall 515 Average temperature 14 km 2 km 2 hm 3 hm 3 /año mm/año C

9 Model building Scheme of the simulation model

10 Calibration Adjustment between maximum, mean and minimum concentrations of Total Coliform observed and measured along the Turia River.

11 Scenarios Summarises results obtained for the reliability and resiliency of the agricultural demands. Current SITUATION MIN FLOW 12 MIN FLOW 14 MinimumFlowin VWI Minimum Flowin VWI MinimumFlowin VWI Imposed Model Imposed Model Imposed Model Max Def 1 year (%) Max Def 2 consecutive years (%) Resiliency Campo del Turia Pueblos Castillos Tradicionales Max Def 1 year (%) Max Def 2 consecutive years (%) Resiliency Max Def 1 year (%) Max Def 2 consecutive years (%) Resiliency MIN FLOW 16 MIN FLOW 18 MIN FLOW 20 Minimum Flow in VWI Minimum Flow in VWI Minimum Flow in VWI Imposed Model Imposed Model Imposed Model Max Def 1 year (%) Max Def 2 consecutive years (%) Resiliency Campo del Turia Pueblos Castillos Tradicionales Max Def 1 year (%) Max Def 2 consecutive years (%) Resiliency Max Def 1 year (%) Max Def 2 consecutive years (%) Resiliency

12 Scenarios Concentrations of Total Coliform simulated depending on environmental flow dic. 06 ene. 07 feb. 07 mar. 07 abr. 07 may. 07 jun. 07 jul. 07 ago. 07 sep. 07 oct. 07 nov. 07 dic. 07 ene. 08 feb. 08 mar. 08 abr. 08 may. 08 jun. 08 jul. 08 ago. 08 sep. 08 oct. 08 nov. 08 dic. 08 ene. 09 feb. 09 mar. 09 abr. 09 may. 09 jun. 09 jul. 09 ago. 09 sep. 09 oct. 09 nov. 09 dic. 09 ene. 10 feb. 10 mar UFC/100 ml Base

13 CONCLUSIONS Water quantity-quality model along Turia River developed. Influence of TC and FC in the raw water arriving to Valencia water supply intake. Connected model allows the establishment of integral solution taking into water quantity and quality. Efficiency of applying environmental flows to reduce water pollutants. Not necessary to maintain a minimum flow continuously. ACKNOWLEDGEMENTS

14 River water quality modelling under drought situations. The Turia River case. Thanks! Javier Paredes-Arquiola Javier Macián María Pedro-Monzonís Edgar Belda Ibáñez Andrea Momblanch Joaquin Andreu Correspondence to: Javier Paredes-Arquiola 14