7th WORLD GENERAL ASSEMBLY OF THE INTERNATIONAL … · INTERNATIONAL NETWORK OF BASIN ORGANISATIONS...

Debrecen, 7 June 2007

DROUGHT ACTION PLAN IN THE SEGURA RIVER BASIN

7th WORLD GENERAL ASSEMBLY OF THE INTERNATIONAL NETWORK OF BASIN

ORGANISATIONS


Mario Andres Urrea Mallebrera, Head of the Water Management Planning Office of the Segura River Basin Authority



-2,00

-1,50

-1,00

-0,50

0,00

0,50

1,00

1,50

2,00

2,50

3,00

S P I EN LA CUENCA DEL S EGURA

serie 1940/ 41 - 2004/ 05

CHARACTERISATION OF EARLIER droughtS

-0,84 Moderada

-1,28 Severa

-1,65 Extrema



ELECTION OF THRESHOLD VALUES

1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1

0

Normalidad (v>0,50)

Prealerta (0,35<v<0,50)

Alerta (0,20<v<0,35)

Emergencia (v<0,20)

ÍNDICE DE ESTADO

Emergencia (v<0,50); Alerta (0,20<v<0,35); Prealerta (0,35<v<0,50); Norm alidad (v>0,50)



ADOPTION OF drought INDICATORS (1/2)

• A system of representative status indicators is defined with respect to the evolution of the offer of resources and the demands to fulfil in each operation sub-systems (the Taibilla Canal Consortium System, the River Basin System and the Tajo-Segura Transfer System).

• These indicators are composed of various variables that include both reservoir storages and natural flows in the river basin.

• The indicators are adopted definitively after calibration and validation in relation to real situations in order to verify their adequacy.



The Special Action Plan for Drought Situations was approved on 21 March 2007 (BOE 23/03/07), the value of the index related to June 2007 was calculated according to the methodology described in this Plan.

Evolución del Índice de Estado del Sistema Cuenca

00,050,1

0,150,2

0,250,3

0,350,4

0,450,5

0,550,6

0,650,7

0,750,8

0,850,9

0,951

1-ag

o-04

1-se

p-04

1-oc

t-04

1-no

v-04

1-di

c-04

1-en

e-05

1-fe

b-05

1-m

ar-0

51-

abr-0

51-

may

-05

1-ju

n-05

1-ju

l-05

1-ag

o-05

1-se

p-05

1-oc

t-05

1-no

v-05

1-di

c-05

1-en

e-06

1-fe

b-06

1-m

ar-0

61-

abr-0

61-

may

-06

1-ju

n-06

1-ju

l-06

1-ag

o-06

1-se

p-06

1-oc

t-06

1-no

v-06

1-di

c-06

1-en

e-07

1-fe

b-07

1-m

ar-0

71-

abr-0

71-

may

-07

1-ju

n-07

Índi

ce d

e es

tado

Sistema CuencaLímite normalidad - prealertaLímite prealerta - alertaLímite alerta - emergencia

Alerta

Prealerta

Normalidad

Emergencia



Evolución del Índice de Estado del Sistema Trasvase

00,050,1

0,150,2

0,250,3

0,350,4

0,450,5

0,550,6

0,650,7

0,750,8

0,850,9

0,951

1-oc

t-04

1-no

v-04

1-di

c-04

1-en

e-05

1-fe

b-05

1-m

ar-0

51-

abr-0

51-

may

-05

1-ju

n-05

1-ju

l-05

1-ag

o-05

1-se

p-05

1-oc

t-05

1-no

v-05

1-di

c-05

1-en

e-06

1-fe

b-06

1-m

ar-0

61-

abr-0

61-

may

-06

1-ju

n-06

1-ju

l-06

1-ag

o-06

1-se

p-06

1-oc

t-06

1-no

v-06

1-di

c-06

1-en

e-07

1-fe

b-07

1-m

ar-0

71-

abr-0

71-

may

-07

1-ju

n-07

Índi

ce d

e es

tado

Sistema Trasvase

Límite normalidad - prealerta

Límite prealerta - alerta

Límite alerta - emergencia

Alerta

Prealerta

Normalidad

Emergencia



THE MANAGEMENT OF DROUGHTS

• The Reservoir Release Commission should deliberate and formulate proposals to the President of the River Basin Authority on the adequate filling and release of the reservoirs and aquifers in accordance with article 33 of the Consolidated Text of the Water Act (Legislative Royal Decree 1/2001).

• After the approval of the Drought Decree, a Drought Monitoring Permanent Commission is created, which includes the principal officers in charge of water resource management, the users and the principal stakeholders of the river basin.

• This Commission will be advised by the Drought Technical Office formed by a multidisciplinary technical team active in the scope of the river basin authority.

• A Public Participation Process will be undertaken, both for the adoption and approval procedure of the Plan and for the adoption the most significant measures.



• RD 10/2005 of urgent measures to reduce damages caused by drought and other climatic adversities in the agricultural sector.

• RD 1265/2005 to adopt exceptional administrative measures for water resources management and to repair the effects of drought in the Júcar, Segura and Tajo river basins.

• RDL 15/2005 of urgent measures for the regulation of water righttransactions.

• RD 287/2006 to regulate urgent works for the improvement and consolidation of irrigations in order to obtain adequate water savings that may alleviate the damages produced by the drought.

• RDL 9/2006 of urgent measures to alleviate the effects produced by the drought in urban water supply and in irrigated agricultural lands in certain river basins.

SUMMARY OF THE MEASURES TO BE ADOPTED SUMMARY OF THE MEASURES TO BE ADOPTED Regulatory MeasuresRegulatory Measures



RELATIONSHIP WITH THE URBAN WATER SUPPLY PLANS FOR MORE THAN 20,000 PEOPLE

• Act 10/2001 requires that the authorities responsible for urban water supply systems serving more than 20,000 people develop an Emergency Plan for drought situations.

• Within the Segura River Basin, there are 18 municipalities of more than 20,000 inhabitants (15 are supplied by the Taibilla Canal Consortium + Hellín, Yecla, Jumilla) the emergency plans of which were presented to the Segura River Basin Authority.

• The Special Drought Plan contains the definition of the basic elements for co-ordination and homogenisation of these emergency plans.



WATER SUPPLY

Structural Measures:

• Disconnect certain municipalities that may be supplied from other sources from the Taibilla sub-system.

• Extension of the Lorca water treatment plant (2,5 M euros).

• Connection of Lorquí, Ceutí, Archena, Ojós, Ricote, Ulea y Villanueva with the Sierra Espada WTP. (4 M euros).



WATER SUPPLY

Measures to Increment Resources

• Declare the desalination plant of de San Pedro del Pinatar II (89 M Euro) an emergency work 100% operational at present 24 hm3/año.

• Extraordinary abstractions from the Calasparra Sinclinal Aquifer (hm3).

2004 2005 2006 TOTAL

30,8 28,1 24,3 83,2

• Creation of a new strategic reserve in the Segura river basin of 17 hm3, (partly consumed already) and extraordinary transfers from the JucarRiver Basin

• Cession of water rights.

2006 C.R. Canal de las Aves (Tajo) 35,52 hm3/año

Arrozales de Hellín (2006) 1,20 hm3/año

2007 C.R. Canal de las Aves (Tajo) 36,00 hm3/año



Management measures

• Voluntary savings, facilitated by conservation campaigns.

• Prohibition of non essential uses (irrigation of gardens, sprinkling etc).



Irrigation

Both the Segura Drought Action Protocol and the SDP establishes the following restrictions:

Pre-Warning 10%

Warning 25%

Emergency 50%

Cession of water rights in favour of the SCRATS, of the irrigators of Extremera.

2005/06 34,05 hm3

2006/07 31,00 hm3



50,00Indirect re-use of STP

31,282,933Wells under entrustment

9,642,1734Wells ceded to the authority and operated by the Water Commissariat

36,883,64537Wells operated directly by the authority

V (hm3)

Qmm3/seg.

NºWELLS

TYPE

TOTAL 127,80



Environmental Management and Control

• Maintenance of minimum flows in the natural river beds. (River type water bodies)



Medium and Lower Valley. Segura river channelling. Heavily Modified Water Bodies.



Objectives

• Hydrologic analysis of wetlands and other areas of environmental interest related to groundwaters.

• Determine the impact caused by the drought and the exploitation of groundwaters.



• Biological quality network.

Contrast potential affections on fish life (no fish mortality).

• River gauging and groundwater level monitoring networks.

NO IRREVERSIBLE DAMAGES ARE REPORTED

MINIMUM FLOWS ON THE FINAL REACH OF THE SEGURA RIVER



CONCLUSIONSCONCLUSIONS

1.1. No restrictions have been implemented in urban water supplies No restrictions have been implemented in urban water supplies during the draught period and the related economic activities during the draught period and the related economic activities have been maintained throughout the river basin.have been maintained throughout the river basin.

2.2. From the environmental point of view, the ecological flows have From the environmental point of view, the ecological flows have been reduced to compatible minimum levels that do not cause been reduced to compatible minimum levels that do not cause irreparable affections in lower river reaches.irreparable affections in lower river reaches.

3.3. The restrictions implemented in irrigation consisted of reducingThe restrictions implemented in irrigation consisted of reducingthe normal flow rates to approximately 50% causing minimum the normal flow rates to approximately 50% causing minimum affections in tree crops and assignment of higher flows to cropsaffections in tree crops and assignment of higher flows to cropsof high socioof high socio--economic efficiency.economic efficiency.



GRACIAS POR SU ATENCION.GRACIAS POR SU ATENCION.THANK YOU FOR YOUR THANK YOU FOR YOUR

ATTENTION.ATTENTION.KKÖÖSZSZÖÖNNÖÖM A FIGYELMM A FIGYELMÜÜKET.KET.



• Payment exemptions derived from irrigation water use:

Exemption in irrigation water tariffs.

Exemption of fix and variable costs of the Tajo-Segura

Transfer tariff included in paragraphs b) and c).

• Compensation of revenue losses with earlier exemptions from the River Basin Authorities Contingency Funds.

2005 16,5 M Euros

2006 17,8 M Euros



86,5086,50Connection of desalination plants with Connection of desalination plants with C.P.C.P.

99,0099,00AlicanteAlicante II desalination plantII desalination plant

Emergency actionsEmergency actions

152,86152,8642,0642,06110,80110,80TOTALTOTAL

37,1237,1216,1216,1221,0021,00Management improvement and Management improvement and conservationconservation

89,0489,0426,7026,70

6,046,0419,9019,90

83,0083,006,806,80

Desalination plant San Pedro del Pinatar Desalination plant San Pedro del Pinatar Drought wellsDrought wells

Increase resourcesIncrease resources

TOTALTOTAL2006/072006/072005/062005/06Emergency actions (M Euro)Emergency actions (M Euro)



240,25240,25359,00359,00TOTALTOTAL

77,3277,32123,90123,90ValencianValencian CommunityCommunity

156,93156,93225,10225,10Region of MurciaRegion of Murcia

6,006,0010,0010,00AndalusiaAndalusia

MAXIMUM PUBLIC MAXIMUM PUBLIC INVESTMENT (M Euro)INVESTMENT (M Euro)

BUDGETBUDGET(M Euro)(M Euro)

AUTONOMIC COMMUNITYAUTONOMIC COMMUNITY



DESALADORADESALADORA

7th WORLD GENERAL ASSEMBLY OF THE INTERNATIONAL … · INTERNATIONAL NETWORK OF BASIN ORGANISATIONS...

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