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.

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

Light or indepth?:

Light

Vegetation class:

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

Performance

Performance impact estimation method:

Catchment outlet

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

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):

Type	Role	Comments
Existing institutional framework	main factor	The area is state property
Successful coordination between authorities	main factor
Financing possibilities	main factor
Attitude of relevant stakeholders	secondary factor	The local government of the nearby village was supportive. The village has direct benefit from the project. There is an improvement in recreational facilities

Financing:

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

Barrier:

Type	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:

Type	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

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

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 pressure:

Policy requirement directive:

Policy impact:

Policy wider plan:

Policy area:

Policy target:

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

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

Design consultation activity:

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 - Alsí³-Tiszavidéki Vízí¼gyi Igazgatí³ság (Lower Tisza Valley Water Directorate)
Other	Determination of design details of the measure		Kiskunsági Nemzeti Park Igazgatí³ság	The National Park is the manager of the site.

Last updated: 12 Jan 2015 | Top

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Water supply and rehabilitation in Nagyszeksos-to Southern Hungary

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