THE USE OF THE HYDROLOGICAL MODELLATION AS TECHNICAL ... · AS TECHNICAL SUPPORT FOR THE RIVER BASIN AUTHORITY: THE CASE OF THE JÚCAR RBA 1. Introduction: The Júcar River Basin

Javier Ferrer Polo

Head of the Hydrological Planning Office

Júcar River Basin Authority

www.chj.es

THE USE OF THE HYDROLOGICAL MODELLATION AS TECHNICAL SUPPORT FOR THE RIVER BASIN

AUTHORITY: THE CASE OF THE JÚCAR RBA

1. Introduction: The Júcar River Basin Authority (JRBA)

2. Features and objectives of modelling3. Modelling:

• Flood hydrology and hydraulics• Hydrological cycle at river district level• Quality of surface water bodies at the district

level• Habitat in river stretches• Water management systems at the river

district level or operating system. • Various processes in detail

4. Conclusions

1. Introduction: The Júcar River Basin Authority (JRBA)

GA LICIA

PRIN CIPA DO D EA ST U RIA S

CA NT A BRIA

PAISV AS CO

NA VA R RA

A RA GO N

CA TA LU ÑA

VA LENCIACA ST ILL A -LA MA N CHA

MA D RID

EX TR EMA DU RA

A ND A LUC IA

MU RCIA

BA LEARES

CA NA RIA S

LA R IOJ A

CEU TA

MELILLA

CA S TIL LA-LEON

Júcar

JUCAR RIVER BASIN DISTRICT LOCATIONTerritory in four different Spanish autonomous regions

Surface

Castilla-La Mancha36,6%

Aragón13,1%

Cataluña0,7%

Comunidad Valenciana

49,6%

Cataluña0,4%

Aragón1,2%

Castilla-La Mancha

8,6%

Comunidad

Valenciana

89,8%

Population

THE JUCAR RIVER BASIN MAIN FEATURES

78%

18%

4%

Agricultural

Urban

Industrial‐recreational

45%

51%

3

0.1% 2%

Surface

Groundwater

Reuse

Desalination

Transfer

42.851

Permanent population (2009) 5.162.163

Tourism equivalent population (2009) 404.883

Irrigated surface (ha) 369.003

Water demand (hm3/year) 3.162

The Júcar RBD is comprised of a group of nine management systems

PRESIDENT

FUNCTIONS• Management and monitoring of the Public Hydraulic Domain

DIRECTION BODIES

STRUCTURE OF THE PRESIDENCY OF SPANISH RIVER BASIN AUTHORITIES

FUNCTIONS• Operation of hydraulic works, exploitation of water resources, operation of water quality programmes.

FUNCTIONS• Administrative, financial, economic and asset management

FUNCTIONS• Studies and reports on the River Basin Plan

TECHNICAL DIRECTORATE

GENERALSECRETARIAT

PLANNINGOFFICE

WATERCOMMISSARIAT

2. Features and objectives of modelling

Wide range of functions to be developed by the Júcar River Basin Authority (JRBA)

Proper development of functions requires adequate characterisation of corresponding hydrological and water resources systems:• quantitative and qualitative aspects• Surface water and groundwater point of view

This characterisation frequently uses numerical models:• different features and objectives• always from the practical point of view

o the experiences in using these models and the real availability of data is more important than the complexity and accuracy of their formulation

o important collaborations carried out with universities and research centres

• Polytechnic University of Valencia (UPV) & JRBA• Centre for Hydrographical Studies (CEDEX) & JRBA

3. Modelling:• Flood hydrology and hydraulics• Hydrological cycle at river district level• Quality of surface water bodies at the

district level• Habitat in river stretches• Water management systems at the river

district level or operating system• Various processes in detail

Objective:• design of infrastructures coping with floods (Marinas Plan)• forecasting of floods in real time (Automatic Hydrologic

Information System, SAIH)• flood hazard and flood risk maps

o Directive 2007/60/EC o National Flood Zone Mapping System

Hydrological models:• initially simplified hydrological event models: unit hydrograph

and curve number • more sophisticated formulations are being introduced recently

(Tetis)

Hydraulic models:• traditional stationary and one-dimensional approach: HEC-

RAS• actually progressively evolving towards more complex models

(SOBEK, InfoWorks)o use of transitory and bi-dimensional modelso simplicity in the automatic generation of the riverbed

geometryo LIDAR cartography and SIG support

PLU model (CEH)

Spatial representation of the temporary evolution of storms Estimation of the regional hietogram in series of sub-riverbasins

RAINMUSIC

REAL –TIME DATANOT FORECASTING

RAIN SPATIAL PATTERNS

BLOCK KRIGING RADAR BLOCK KRIGING+RADAR

Flood hydrology: rainfall

SAIH – Automatic Hydrologic Information System

CREM

Forecasting of inflow in reservoirsOptimal management of outlet elementsHydrological self-calibration methodsData• reservoir characteristics:

• reservoir curve• outlet elements capacity

• catchment characteristics:• surface• unit hydrograph

SAIH – Automatic Hydrologic Information System

Flood hydrology: runoff

CEH models

CRAF

Forecasting of flood hydrographs in river stretches with gauging stationsHydrological self-calibration methodsData• temporal evolution of flow in the

gauging station• characteristics catchment:

• surface• unit hydrograph

TETIS TETIS model:model:

MODELOS HIDROLMODELOS HIDROLÓÓGICOSGICOS

Developed in the UPV since 1994Distributed runoff model

– Network of cells – Reproduces the spatial variability of the Hydrological Cycle– Reducing the effect of spatial scale

Non-linear propagation modelling separated in slopes and streams

Flood hydrology: runoff

SOBEK (1D/2D):SOBEK (1D/2D):

- Delft University (Netherlands)- Permanent / non-permanent regime- Introduction of structures: bridges, dams, …- Operation as models 1D, 2D and coupled

1D/2D

Flood hydraulic

InfoWorks (1D+2D):InfoWorks (1D+2D):

But also HECBut also HEC--RAS ...RAS ...

Return period of T 10, 100 y 500 years

HPD, preferential flow zone and flood zone

Depth

• Flood hazard and flood risk maps• Directive 2007/60/EC on the

assessment and management of flood risk

• Additional cartographic elements defined in the National Flood Zone Mapping System (NFZMS).

• InfoWorks 2D and HEC-RAS

DEFENSE PLANS AGAINST FLOODS IN THE DEFENSE PLANS AGAINST FLOODS IN THE MARINA MARINA ALTAALTA AND AND MARINA BAJAMARINA BAJA

OBJETIVESOBJETIVES• Hazard assessment

• Identify flood zones• Estimate the risk of flooding• Calculate water depth and velocity

• Assessment of associated damage• Assess monetary damage associated to each flood zone

• Definition and evaluation of alternatives• Proposal of solutions

METHODOLOGYMETHODOLOGY

Performed hydrologic modellingPerformed hydrologic modellingwith TETISwith TETIS

Conducted hydraulic modellingConducted hydraulic modellingwith Infoworks RSwith Infoworks RS

Generación tormentas sintéticas (RAINGEN) –

Modelación hidrológica distribuida (TETIS)

Asignación de probabilidad a los

caudales

Modelación hidráulica 2D (InfoWorks RS)

T = 10, 25, 50, 100 y 500 años

Estimación de los daños en €/año

STUDY TO INCREASE THE DRAINAGE CAPACITY OF THE STUDY TO INCREASE THE DRAINAGE CAPACITY OF THE CANAL MARIA CRISTINACANAL MARIA CRISTINA (ALBACETE)(ALBACETE)

Scope of Study / Global ApproachScope of Study / Global Approach

Hydrology of the Hydrology of the basin: basin: TETISTETIS Drainage capacity of canal Drainage capacity of canal

Maria Cristina: Maria Cristina: SOBEK 1DSOBEK 1D

Urban HydrologyUrban Hydrology--Hydraulic Hydraulic Study of sewer network: Study of sewer network: Infoworks CS/2DInfoworks CS/2D

Defining flood risk in the Defining flood risk in the Los LlanosLos Llanoszone: zone: SOBEK 1D/2DSOBEK 1D/2D


district level• Habitat in river stretches• Various processes in detail

Simulation of natural and altered hydrological cycle• surface components

o rainfall infiltrationo real evapotranspirationo surface runoffo groundwater dischargeo river losses

• groundwater components:o aquifer rechargeo lateral inflow and outputo piezometric head (aggregated)

Objectives:–obtain monthly series of surface discharges in those stretches without flow control station

–estimate the available and the renewable groundwater resources

–analyse climate change impacts for different scenarios with variations in rainfall and temperature

Simulation of the nitrate concentration studying the effects of reduction measures for agricultural fertiliser doses on the nitrates concentration

Simulation of natural and altered hydrological cycle in the Hydrological RBMP: Patrical model

Octubre de 2000

Precipitación (mm)

Temperatura (ºC)

Aportación en la red fluvial (hm3/mes)

Resultados en la red fluvial

0

20

40

60

80

100

120

oct-

40oc

t-42

oct-

44oc

t-46

oct-

48oc

t-50

oct-

52oc

t-54

oct-

56oc

t-58

oct-

60oc

t-62

oct-

64oc

t-66

oct-

68oc

t-70

oct-

72oc

t-74

oct-

76oc

t-78

oct-

80oc

t-82

oct-

84oc

t-86

oct-

88oc

t-90

oct-

92oc

t-94

oct-

96oc

t-98

oct-

00oc

t-02

oct-

04oc

t-06

mes

m3/

s

Júcar observed in Alarcónl l d l

200220240260280300

oct-

40oc

t-44

oct-

48oc

t-52

oct-

56oc

t-60

oct-

64oc

t-68

oct-

72oc

t-76

oct-

80oc

t-84

oct-

88oc

t-92

oct-

96oc

t-00

oct-

04

mes

m.s

.n.m

.

calculated

Patrical Model. Monthly distributed hydrological simulation of rivers and aquifers

Simulation of natural and altered hydrological cycle in the Hydrological RBMP

Nieve

Volumen y nivel piezométrico en el

acuífero

Clima Precipitación

Precipitación líquida

Temperatura

Evapotranspitaciónpotencial

Humedad del suelo

Evapotranspitaciónreal

Excedente

Infiltración

Escorrentía superficial

Trasferencias laterales

Escorrentía subterránea

Trasferencias laterales

Escorrentía total

Pérdidas de cauces

Pérdidas de cauces

Geomorfología

Hidrogeología

Escorrentía en cauce

Applications in the Hydrological River Basin Management Plan

Gauging stations and points of contrast ROEA

Evaluación de recursos en Contreras

0

200

400

600

800

1.000

1.200

1940

/41

1942

/43

1944

/45

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/47

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/49

1950

/51

1952

/53

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/55

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/57

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/59

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/01

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/03

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/05

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/07Año

hm3/año

M odelado M edia SL M edia SC Restituido M edia SL M edia SC

Obtain monthly series of surface discharges in those stretches without flow control station

Total Runoff

Renewable resources (Rr)

Rr=Ill+Rt+Ir+EL being,

ILL= Rainfall infiltration: 1980-2008Rt= Total return (agricultural and urban): 2000-08Ir= River infiltration EL= Lateral inflows

Regional renewable resources (Rrz)

Rrz=Rr- SL being,

SL= Lateral outflows

0

1.000

2.000

3.000

4.000

5.000

6.000

7.000

1940

1942

1944

1946

1948

1950

1952

1954

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1960

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1964

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1968

1970

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1974

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1978

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1982

1984

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1990

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2002

2004

2006

2008

hm3

Volumen de recarga por infiltración de lluvia directa

Recarga Lluvia Media (80‐08) Media (40‐08)

Use of hydrological precipitation-inflow simulation model (Patrical) to estimate the

components of the water cycle

Rainfall infiltration

River losses Lateral inflows Irrigation return Renewable resources

Lateral outflowRegional renewable resources

2.443 272 920 477 4.093 858 3.235

Average of the natural and altered regime

2000-08

ESTIMATION OF AVAILABLE GROUNDWATER RESOURCES


CLIMATE CHANGE IMPACT ON THE ESTIMATION OF GROUNDWATER RESOURCES

•A change in temperature or precipitation effects the assessment of water resources in the territory.

•Considerable uncertainty regarding the possible scenarios.

•Need for spatial and temporal estimations.

The Spanish Water Planning Instructions (WPI) underline that:

“The hydrological plan will assess possible climate change impacts on the natural water resources in the district. Therefore it will estimate, through hydrological simulation models, the resources that would correspond to the climate scenarios foreseen by the Ministry of Environment, Rural and Marine Affairs. (…) As long as the corresponding assessments to these scenarios are not available, percentages of overall reductions in natural contributions of indicated references will be applied.”

PATRICAL

Temperature

Surface contribution

Rainfall

Groundwater infiltration


Simulation of nitrate concentration

Organic fertilisation

Lateral inflows Excessive load

60%

20%

Period 2000-06

Concentration of nitrates mg/l

10

20

30

40

50

60

70

80

carga=0 carga= 50% carga=100% conc_máxima

carga= 60% carga= 70% C=0%_R=0%

Disappearance of fertilisation

Mineral fertilisation


3. Modelling:• Flood hydrology and hydraulics• Hydrological cycle at river district level• Quality of surface water bodies at

the district level• Habitat in river stretches• Water management systems at the river


Objective:• design of measures network• identification of discharges• analysis of eutrophication in reservoirs• effectiveness analysis of the programme of water treatment

measures

Complex model: GESCAL• development of the UPV• modelled elements: rivers and reservoirs• possibility to be integrated in a decision support system

(Aquatool)• nitrogen and phosphorus cycle

Simplified model: GeoImpress• developed by the JRBA• used in many Spanish RBMAs• tool in GIS environment• estimates the effectiveness of the programme of water

treatment measures• Pollutant decay: BOD5• Conservative pollutant: total P

• permits the estimation of measures to be applied and the exemptions from environmental objectives

• HIPOTHESIS: ONE-DIMENSIONAL WITH ADVECTION AND DISPERSION (MIXED FLOW REACTOR)

• STEADY MONTHLY SCALE

• HYDRAULIC CALCULATIONS: MANNING OR POTENTIAL

• HYDRAULIC CONNECTIONS WITH AQUIFERS ARE TAKEN INTO ACCCOUNT

• DIFFUSE POLLUTION FOR ALL POLLUTANTS

• TEMPERATURE: MODELLING OR SPECIFIED BY THE USER

• SOLVING EQUATIONS BY NUMERICAL MODELS

Element River

CHARACTERISTICS OF MODELLATION:

Gescal model

• NOT STATIONARY

• POSIBILITY OF SIMULATION AS COMPLETE OR STRATIFIED MIXTURE

• BEARING IN MIND THE DIFFUSION BETWEEN THE TWO LAYERS

• ASSUMING MONTHLY LINEAR VOLUME VARIATION IN THE RESERVOIR

• TEMPERATURE: MODELLING OR SPECIFIED BY THE USER

• OUTFLOW CONCENTRATION: MONTHLY AVERAGE

• SOLVING BY NUMERICAL METHODS

Gescal model

Element Reservoir

CHARACTERISTICS OF MODELLATION:

Modelled elements:TEMPERATUREMODELLATION OF SEVERAL ARBITRARY POLLUTANTS AT THE SAME TIMEDISSOLVED OXYGEN (DO) AND ORGANIC MATERIAL (OM)DO+OM+ NITROGENE CYCLEEUTROPHICATION PROBLEM

Gescal model

Modelled processes

Norg

NH4+

NO3-

Mineralisation

Nitrification

DO

Alga

Mat. Org.

Porg.

Pdis.

Sedimentation

Denitrification

Sedimentation

Growth Respiration

Sedimentation

Reaireation

Sedimentation

Decomposition

Mineralisation

DOS

Flow

Flow

Gescal model

MODELLED ELEMENTS:

•CONDUCTIVITY

•SUSPENDED SOLIDS

•TOTAL PHOSPHORUS

•BOD5

•DISSOLVED OXYGEN

•AMMONIUM

•NITRATES

Gescal model

Implementation in the Júcar river

General characteristics of the GeoImpress model

• Realised with graphic script in GIS (ARCGIS 9.2 ModelBuilder)• Intuitive modelling, the model looks like a “SQL scheme”• Supports integrated text. Permits arguing the model.• Automates and extends the initiated calculation process in the

WFD article 5 report• Results raster in 100 x 100 m grid throughout the whole drainage

network • Stationary regime: annual average• Conservative elements and/or those with decay can be modelled• Regional calibration with data of the ICA network• Models separately and consecutively:

1. discharge2. loads with or without decay3. concentrations

Methodology

GeoImpress model

WastewaterBOD5

Phosphorus

K river K reservoir

BOD5Phosphorus

Decay

Circulating discharge

•Natural inflow

•Wastewater•Catchments•Return

Load Extraction

Statistical analysis

Resultsassessment

SIMULATION

General modelling scheme

Model GIS environment

GeoImpress model

Calculation of circulating discharge

Retornos

Demanda

Aportación

Decay calculation

Calculation of BOD5

concentration

Drenaje

Temperatura

K diferencial

Raster decaimiento

GeoImpress model

General modelling scheme

EPSAR CHJ PNCCenia-Maestrazgo 25 3 0 28Mijares-Plana de Castellón 44 4 8 56Palancia-Los Valles 12 0 0 12Turia 54 18 2 74Júcar 105 31 40 176Serpis 46 0 0 46Marina Alta 57 1 0 58Marina Baja 10 0 10Vinalopó-l'Alacantí 33 1 1 35

386 58 51 495

Number of wastewater sites per information source

Basic data: 495 wastewater sites

• BOD5-total P load

• Discharge volume

• X,Y wastewater sites

GeoImpress model

With ICA network regionally calibrated BOD5 degradation constants

Calibration method

Calculated K Nº of Sub-BasinsVariable (emb) 18

0,01 370,05 1420,08 150,11 31

243

GeoImpress model

Actual Trend with measures

2005 2015*Reach good status 265 286Don't reach good status 40 12Without water in the sampling 7

305 305

Reached status compared 2005-2015

Results. Trend scenario

Simulated loadP total Tn/year 1.367

BOD5 hab. Eq 403.883

Simulated loadP total Tn/year 1.098BOD5 hab. Eq 216.212

GeoImpress model




Contents of the RBMP: assessment of environmental requirements in rivers, transitional waters, lakes and wetlands with the aim of contribution to achieve the good ecological status of water bodies.

In JRBA it is important to estimate the adequate minimum flow regime in river reaches: combined use of hydrological and biological methods.

Biological methods using RHYHABSIM habitat simulation model• selection of the target fish species• estimation of their preference curves

• with respect to the hydrological regime• for each growth stage (juvenile and adult)

• result: curve of potential useful habitat (PUH)–discharge

The Water Planning Instruction (WPI):• provide common technical criteria in the planning process• provides a range of desirables PUH: 30-80% of maximum PUH

HABITAT METHODS. SELECTION OF SPECIES

Ecological flows

Availability of 12 river stretches with habitat modelling studies in accordance with the technical criteria of the Water Planning Instructions (WPI)

Hydrobiological methods. Obtaining the PUH-Q curve

HABITAT METHODS. OBTAINING THE POTENTIAL USEFUL HABITAT CURVE (PUH) -DISCHARGE

Ecological flows

Proposal for the determination of minimum flows

Antella results

(Lower Júcar stretch)

Huerto Mulet results

(Lower Júcar stretch)

Ecological flows

HABITAT SIMULATION % PUH

HYDROLOGICAL

30% 50% 80% QBM

Antella 1.13 1.75 2.93 11.58Huerto Mulet 5.70 8.20 13.50 14.71


district level• Habitat in river stretches• Water management systems at the

river district level or operating system

• Various processes in detail

Analysis of demand satisfaction is an important content to be included in the RBMP in Spain

The adopted methodology is the simulation of water resources management systems using historical flow series

Simulation using the SIMGES model:• developed by the UPV• included in the Aquatool interface• with a long, general and interesting experience in Spanish

RBA• SIMGES includes the following elements:

a. surface and groundwater resourcesb. demand unitsc. environmental flowsd. regulation reservoirse. major transportation channelsf. operating rulesg. aquifers

Objectives

a) Management of the last drought 2005/08, simulating the demand satisfaction using different scenarios of water supply and contribution.

b) Establishment of operational rules for systems whose exploitation has been contrasted with the simulation of historical discharge series.

c) Analysis of the feasibility of implementing environmental flows, simulating the effects on the guarantee for corresponding demands.

d) Estimation of the allocation and reserves of water resources which can be made to different users.

GESCAL MODEL

Quality simulation SIMGES MODEL

Management simulation

ASSESSMENT OF WATER RESOURCES

Restitution to natural regime

Rainfall models. Runoff (SIMPA, PATRICAL)

RIVER BASIN DATA

- Infrastructure

- Demands

- Aquifers

- Environmental assignments

QUALITY DATA

- Measures (ICA network)

- Discharge data

- Detail models

ESTIMATION OF DIFFUSE LOADS

Rainfall-runoff + quality models (PATRICAL)

Pressures – impact models

PROGRAMME OF MEASURES

What to do?

What is effective?

Which effects can we reach?

Which effects will have our decisions?

Scheme of connexion between models for the integrated modelling (Aquatool-UPV)

47

Aquatool scheme (SIMGES) of the JúcarAquatool scheme (SIMGES) of the Júcar

InflowsInflows

INFLOW (hm3/year)

1940‐08 Accumulated 1940‐80 Accumulated 1980‐08 Accumulated

Alarcón 399.0 399.0 483.0 483.0 283.1 283.1

Madrigueras 286.8 685.8 323.9 806.9 235.5 518.7

Contreras 339.6 339.6 413.2 413.2 238.2 238.2

Tous 253.3 1278.7 312.9 1533.0 171.0 927.9

Sueca 229.4 1508.1 201.1 1734.1 268.4 1196.4

0

20

40

60

80

100

120

140

1993

/94

1994

/95

1995

/96

1996

/97

1997

/98

1998

/99

1999

/00

2000

/01

2001

/02

2002

/03

2003

/04

2004

/05

2005

/06

2006

/07

2007

/08

2008

/09

2009

/10

2010

/11

hm3 /

año

Valencia

Turia Júcar Júcar modelo Total modelo

Demands: historical supplyDemands: historical supply

YEAR Sueca CulleraCuatro

Pueblos Ribera Baja1990/91 279.4 169.8 43.7 492.81991/92 196.5 119.5 34.2 350.21992/93 211.1 128.3 33.0 372.51993/94 190.4 115.7 29.7 335.81994/95 112.7 71.9 16.7 201.41995/96 147.8 80.1 20.1 248.11996/97 212.6 124.8 30.1 367.41997/98 171.1 144.6 37.7 353.31998/99 195.6 91.3 30.1 317.01999/00 157.4 114.6 26.3 298.22000/01 183.8 139.2 33.5 356.62001/02 168.0 130.8 27.4 326.22002/03 181.9 129.0 32.8 343.72003/04 182.0 147.6 36.1 365.72004/05 230.8 137.3 25.6 393.72005/06 143.8 74.8 15.3 233.92006/07 123.8 60.2 15.9 199.92007/08 202.4 93.2 16.1 311.82008/09 208.5 99.5 23.1 331.12009/10 201.9 141.4 26.7 370.02010/11 193.5 131.8 29.1 354.4

CONSIDERED DEMANDSummer 127.76 54.71 15.97 198.44Winter 13.98 8.11 2.81 24.9

Environmental 29.0 16.0 7.0 52.0

TOTAL 170.74 78.82 25.78 275.34

0

100

200

300

400

500

600

1990

/91

1991

/92

1992

/93

1993

/94

1994

/95

1995

/96

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/97

1997

/98

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/99

1999

/00

2000

/01

2001

/02

2002

/03

2003

/04

2004

/05

2005

/06

2006

/07

2007

/08

2008

/09

2009

/10

2010

/11

hm3 /

año

Ribera Baja

invernales extraordinarios estivales normalidad

Demand scenarios: 2009

name

Yearly demandl (YD) (hm3)

Irrigation in the Mancha Oriental332.5

Sustitution for pumping24.00

Irrigation in the Júcar‐Turia Canal 94.3Surface CJT 45.5 RT‐Ribera Alta 246 RT‐ Ribera Baja

275.34 TOTAL AGRICULTUR

948.14Valencia 82.63Sagunto 7.88Albacete 16.95

TOTAL URBANA107.46

CN Cofrentes 23.70TOTAL INDUSTRIAL

23.70TOTAL 1079.3

Qeco: New studiesQeco: New studies

HABITAT SIMULATION HIDROLOGICAL NEW STUDIES

30% 50% 80% QBM

Alarcón 0.4 0.94 2.39 2.59 0.6*Madrigueras 0.52 0.82 1.33 3.31 0.6Contreras 0.56 0.93 1.53 1.70 0.8Antella 1.13 1.75 2.93 11.58 1.8

Huerto Mulet 5.70 8.20 13.50 14.71 5.7

51

Results: Qeco scenario and management ruleResults: Qeco scenario and management rule

0

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Volumen Total Embalsado

NNE con RE histórico Convenio Alarcon CHJ Alerta 1

0

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mes

Volumen Alarcón Embalsado

NNE con RE histórico Convenio Alarcón USUJ

*Agreement Alarcón CHJ: Volume agreement Alarcón including minimum volume of Contreras, Tous and Bellús.

*

52Sin RE Con RECJT Sust pumping CJT Sust pumping

Average surface supply (hm3) 40.08 20.75 40.45 21.32

TRADICIONALS 1 year 2 years10

yearsVol R Surface (hm3) 374.95 762.94 4888.04Vol RE (hm3) 86.76 168.10 173.53Total demand (hm3) 521.45 1042.90 5214.51Total deficit (hm3) 59.73 111.85 152.94Total deficit (%) 11.45% 21.45% 29.33%Surface deficit (hm3) 146.50 279.96 326.47Surface deficit (%) 28.09% 53.69% 62.61%

0102030405060708090

100

1980

-198

1

1982

-198

3

1984

-198

5

1986

-198

7

1988

-198

9

1990

-199

1

1992

-199

3

1994

-199

5

1996

-199

7

1998

-199

9

2000

-200

1

2002

-200

3

2004

-200

5

2006

-200

7

2008

-200

9

hm3/

año

Suministros CJT

superficial pozos sequía subterráneo

0

5

10

15

20

25

30

1980

-198

1

1982

-198

3

1984

-198

5

1986

-198

7

1988

-198

9

1990

-199

1

1992

-199

3

1994

-199

5

1996

-199

7

1998

-199

9

2000

-200

1

2002

-200

3

2004

-200

5

2006

-200

7

2008

-200

9

hm3/

año

Suministros sustitución MO

superficial subterráneo

Results: Qeco scenario and management ruleResults: Qeco scenario and management rule




• Eutrophication problem in Albufera• Sustainable exploitation in the aquifer Mancha Oriental

Parámetros de calidad (i) Tipos de aporte (j) Puntos de entrada (k)

Oxígeno disuelto en mg O2/l.Conductividad (μS/cm).Nutrientes:• Nitratos expresado en mg N-NO3-/l) • Amonio expresado en mg N-NH4+/l) • Fósforo total en mg P/l.Sólidos Suspendidos (mg/l).

Escorrentía superficial Descarga de Sistemas Unitarios (DSU)Escorrentía Subterránea_127_128Escorrentía Subterránea_129Retornos Superficiales SuecaRetornos Subterráneos SuecaRetornos Superficiales ARJRetornos Subterráneos ARJRetornos Superficiales TuriaRetornos Subterráneos TuriaAguas Residuales Urbanas (ARU)EDAR (Saler)EDAR (Algemesí-Albalat)EDAR (Ford)EDAR (Quart-Benàger)EDAR (Pinedo II)EDAR (Albufera Sur)

1. Dreta2. Overa3. Campets4. Alqueresia5. Foia6. Nova de Silla7. Beniparrell8. Font de

Mariano9. Albal10. Port de

Catarroja11. Poyo-Fus12. Ravisanxo13. Carrera del

Saler

SOBEK MODEL: WATER QUALITY IN THE SOBEK MODEL: WATER QUALITY IN THE ALBUFERA LAKE IN VALENCIAALBUFERA LAKE IN VALENCIA

Alqueresia

Gola de Puchol

Gola de Perrellonet

Gola de Perrello

Carera del Saler

Foia

Silla

MarianoBeniparrell

FusPoyo

Albal Catarroja

A2A3

A1 B2

C2

C1

B1

Campets

OveraDreta

Simulation of chlorophyll concentration in the Albufera Lake in Valencia trying to resolve the actual eutrophication problem

• using the bi-dimensional model SOBEK• analysing the strategies of inputs and

wastewater treatment level

Objective:

Simulate the improvement effect on the chlorophyll‐a concentration of the lake depending on the wastewater discharge percentage with additional green filter treatment.

Parameter Unity Outflow quality Green Filter

NO3 mg NO3‐N/l 0,7

NO3 mg NO3‐l 3,1

NH4 mg NH4‐N/l 0,12

NH4 mg NH4/l 0,15

NT Mg N/l 1,5

PT mg P/l 0,12

DO mg/l 3

SS mg/l 8,8

COND µS/cm 2050

Chla‐a µg/l 24

With additional green filter treatment obtainable quality.

RESULTS Chla‐a with respect to the % of the wastewater discharge with additional treatment

POSSIBILITY OF ADDITIONAL WATER TREATMENT POSSIBILITY OF ADDITIONAL WATER TREATMENT WITH GREEN FILTERS IN THE ALBUFERA LAKEWITH GREEN FILTERS IN THE ALBUFERA LAKE

Finite differences 1,0 x 1,0 km

16.506 cells

Detailed geology:• 3 aquifer layers• 3 semipermeable layers

Relation river-aquifer

Modflow model of Mancha Oriental aquifer

Elevated detail in vertical

Calibration model

Adjustments piezometric heights

Adjustment of the circulating discharges series in the river

Objective: forcast the aquifer behaviour in different pumping scenarios

Sustainability river-aquifer: River stretch Picazo-Los Frailes

Piezometric sustainability: P2602

Scenarios for sustainable exploitation of Mancha Oriental aquifer

Image DEIMOS-1 8-8-2011

-Very important agricultural exploitation-Decrease of piezometric levels-Effects on the circulating discharge in the middle stretch of the Júcar river.

4. Conclusions

1. Wide range of functions to be developed by JRBA2. An adequate characterization of hydrological and water resources

systems, frequently using numerical models, is required.• natural & artificial • quantitative & qualitative• surface water & groundwater• always from a practical point of view: experience & data available• collaboration with universities and research centres is need

3. Numerous objectives of modelling:- design of infrastructures coping with floods- forecasting of floods in real time (AHIS-SAIH)- flood hazard and flood risk maps- obtain monthly series of flows without flow control station- estimate the available and the renewable groundwater resources- analyse climate change impacts- study measures for agricultural fertiliser dose reduction- design of water quality measures network - identification of wastewater discharges- analyse eutrophication in reservoirs- analyse efficiency of programme of water treatment measures- assessment of adequate minimum flow regime in rivers- drought management: simulate different scenarios of water supply- establishment of operational rules for water resources systems- analysis of the feasibility of implementing environmental flows- estimation of the allocation and reserves of water resources- analysis of wastewater treatment level needs in eutrophicated waterbodies- possible scenarios for sustainable exploitation of aquifers

Thanks for your attention !

Documents

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