Water supply and rehabilitation in Nagyszeksos-to Southern Hungary

General

National Id

Hungary_02

Site name

Nagyszéksós Lake, Csongrád county

Summary

The Nagyszéksós-tó project aimed safeguarding natural and recreational functions of the Nagyszéksós lake protected area through the improved retention of water from excess water periods 1.2 million m3 and the provision of surplus water from the nearby village's water treatment plan giving extra treatment through a newly developed wetland area. The other goals of the project are the improved infiltration to the groundwater and restored drainage capacity of the water system to prevent long lasting water logging periods on agricultural fields.The nearby village, Mórahalom also benefited from the development through improved recreation conditions and cultural, educational possibilities in the area.

Light or indepth?

Light

NUTS Code

Dél-Alföld

RBD code

HU1000

Transboundary

Data provider

Gábor Ungvári

Source(s)

Komplex vízvisszatartási akcioprogram a NagyszéksosTo vízrendszerében

A MÓRAHALMI NAGYSZÉKSÓS-TÓ VíZKÉMIAI VIZSGíLATAINAK ELEMZÉSE

A bivaly-rehabilitácios területek elemzése a Nagyszéksos-To és a Tanaszi-semlyék eltérÅ‘ biotopjain

NWRM(s) implemented in the case study

Basins and ponds

Wetland restoration and management

Lake restoration

Site information

Climate zone

warm temperate dry

Mean rainfall

525

Mean rainfall unit

mm/year

Average temperature

Mean runoff

2,34999990463257

Mean runoff unit

600 - 750 mm

Average runoff coefficient

1,13619995117188

Type

Case Study Info

Vegetation class

It is a wetland area surrounded by crop production agricultural lands.

Performance

Performance impact estimation method

Catchment outlet

Design & implementations

Application scale

Field Scale

Lifespan

Age

Performance timescale

Immediate

Area subject to Land use change or Management/Practice change (ha)

Design capacity description

1.2 million cubic m (m3)

Constraints

The size of the area is constrained, bigger volume retention would threaten agricultural lands

Favourable preconditions

The main drainage channel of the district's drainage network passes by the lake. (The lake itself the area that reamined an drained)

Design contractual arrangement

Arrangement type	Responsibility	Role	Comments	Name
			The parties will prepare a plan to specify the operation details after the experiences of the first years in operation.

Design consultation activity

Activity stage	Key issues	Name	Comments

Design land use change

Land use change type
Moors and heathland

Design authority

Authority type	Role	Responsibility	Name	Comments
Local water authority	Determination of design details of the measure		ATIVIZIG - Alsó-Tiszavidéki Vízí¼gyi Igazgatóság (Lower Tisza Valley Water Directorate)
Other	Determination of design details of the measure		Kiskunsági Nemzeti Park Igazgatóság	The National Park is the manager of the site.

Lessons, risks, implications...

Key lessons

The project required the compromise of the water directorate and the national park how they manage their disparate interests of water levels in the lake facing the unpredictability of precipitation events. The further expansion of such a scheme in the area would have public, environmental and private gains as well, but the parties at the moment see no means how to harmonize conflicting interests if not only public, but privately owned lands would be involved as well.

Success factor(s)

Success factor type	Success factor role	Comments
Existing institutional framework	main factor
Successful coordination between authorities	main factor
Financing possibilities	main factor
Attitude of relevant stakeholders	secondary factor

Financing

Financing type	Comments
EU-funds: Cohesion and regional development funds	DAOP 5.2.1/D - Komplex vízvisszatartási akcióprogram a Nagyszéksós-tó vízrendszerében

Barrier

Barrier type	Barrier role	Comments
Other	main barrier	In this case there was no real barrier because the area is state property, the funds enabled the purchase of the wetland location. But a similar measure - according to the official at the directorate - cannot be accomplished if arrangements with private owners should be included. The duration of such reconciliation has a huge uncertainty and big probability of failure that it cannot be financed on a closed time frame project bases.

Driver

Driver type	Driver role	Comments
Balancing different objectives	main driver	The obligation of the water authority (to provide safety against flood or water logging threats are in contradiction with the environmental management objectives of the national park. Because the lake serve as a buffer for storage of the surplus water. The applied solution is a way forward from this situation, but without the financial sources of the operative program no sources would be attained.
Availability of subsidies	secondary driver

Financing share

Financing share type	Share	Comments

Policy, general governance and design targets

Policy description

It is a lake-wetland with big shallow areas, the water level drops left these areas dry out frequently. The NWRM will mitigate the changes of water level. WFD pressure 4.1.2; 4.3.1 2.2??

Part of wider plan

Policy target

Target purpose
Increase Water Storage
Improved Biodiversity
Peak-flow reduction
Groundwater Recharge
Pollutants Removal
Oher Societal Benefits

Policy pressure

Pressure directive	Relevant pressure

Policy area

Policy area type	Policy area focus	Name	Comments

Policy impact

Impact directive	Relevant impact

Policy wider plan

Wider plan type	Wider plan focus	Name	Comments

Policy requirement directive

Requirement directive	Specification

Socio-economic

Direct benefits

1666,66662597656

Direct benefits information

There are avoided costs. According to the predictions the upgraded situation will decrease the total maintenace costs that emerged previously at the two organisations (water directorate, national park)

Ancillary benefits information

There is no economic assessment of the miscallenous benefits. These could come from recreational activities, nutrient load mitigation and habitat services.

Costs investment

747095,25

Costs investment information

New water supply chanel, creation of wetland, reconstruction work inside the lake, reconstruction of drainage channels.
Inflation adjusted price from HUF 2009

Costs operation maintenance

1666,66662597656

Costs operation maintenance

This is the maintenance cost of the channels. Additonal cost will emerge in case of severe water shortage (reference to the water depth), the pumping of treated water to the constructed wetland to start supply the lake will start. It will have a cc 15€/day cost.

Ecosystem improved biodiversity

Information on Ecosystem improved biodiversity

The eutrophication process that threatened the lake was changed, the water lily (Nympheaetum albae) appeared again in the lake.

Ecosystem provisioning services

Information on Ecosystem provisioning services

The biomass of the lake now serves as feedstock for the buffalos. A recently finished, paralel ecology pilot-project applied water buffalos (Bubalus bubalus) to repel invasive species from the area. The first results of the program are positive.

Ecosystem impact climate regulation

No information available

Biophysical impacts

Water quality overall improvements

Positive impact-WQ improvement

Information on Water quality overall improvements

There is no quantitative inforamtion to measure the changes.

Soil quality overall soil improvements

N/A info

Full Context

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Pathway(aka Context)

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Area(aka Level or Site)

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