1.2 Contact details of resource persons and institutions involved in the assessment and documentation of the Technology

Name of project which facilitated the documentation/ evaluation of the Technology (if relevant)

Preventing and Remediating degradation of soils in Europe through Land Care (EU-RECARE )

Name of the institution(s) which facilitated the documentation/ evaluation of the Technology (if relevant)

Slovak University of Technology (Slovak University of Technology) - Slovakia

1.3 Conditions regarding the use of data documented through WOCAT

The compiler and key resource person(s) accept the conditions regarding the use of data documented through WOCAT:

Yes

2.1 Short description of the Technology

Definition of the Technology:

Flood-Control Reservoir - a complex hydraulic facility

2.2 Detailed description of the Technology

Description:

The construction is designed to prevent the flooding of the territory located behind the structure, to eliminate the threat of floods caused by storm rainfall and inappropriate farming, and to reduce flow fluctuation.

Purpose of the Technology: The Svacenický creek polder was built to transform Q100 flood waves.

Natural / human environment: The Svacenický creek polder is part of the flood protection of the area, which is located in the west of Slovakia in the cadastral area of the town of Myjava, in the locality of Tura Luka. The town of Myjava has been plagued by frequent floods in recent years, which have resulted in significant material damage, thereby severely hampering the quality of the local residents´ lives.

2.3 Photos of the Technology

2.5 Country/ region/ locations where the Technology has been applied and which are covered by this assessment

2.6 Date of implementation

If precise year is not known, indicate approximate date:

• 10-50 years ago

2.7 Introduction of the Technology

Specify how the Technology was introduced:

• through projects/ external interventions

3.2 Current land use type(s) where the Technology is applied

Comments:

Major land use problems (compiler’s opinion): Generation of gulllies.
Major land use problems (land users’ perception): Generation of gulllies and landslides.
Future (final) land use (after implementation of SLM Technology): Other: Ow: Waterways, drainage lines, ponds, dams

3.3 Has land use changed due to the implementation of the Technology?

Has land use changed due to the implementation of the Technology?

• Yes (Please fill out the questions below with regard to the land use before implementation of the Technology)

3.4 Water supply

Water supply for the land on which the Technology is applied:

• mixed rainfed-irrigated

3.5 SLM group to which the Technology belongs

• surface water management (spring, river, lakes, sea)

3.6 SLM measures comprising the Technology

Comments:

Main measures: structural measures

Secondary measures: vegetative measures

Type of vegetative measures: scattered / dispersed

3.7 Main types of land degradation addressed by the Technology

Comments:

Main type of degradation addressed: Wm: mass movements / landslides

Secondary types of degradation addressed: Wg: gully erosion / gullying

Main causes of degradation: Heavy / extreme rainfall (intensity/amounts), floods

Secondary causes of degradation: soil management, crop management (annual, perennial, tree/shrub)

3.8 Prevention, reduction, or restoration of land degradation

Specify the goal of the Technology with regard to land degradation:

• prevent land degradation

Comments:

Main goals: prevention of land degradation

4.1 Technical drawing of the Technology

4.2 General information regarding the calculation of inputs and costs

other/ national currency (specify):

euro

If relevant, indicate exchange rate from USD to local currency (e.g. 1 USD = 79.9 Brazilian Real): 1 USD =:

0.91

4.6 Costs and inputs needed for maintenance/ recurrent activities (per year)

Comments:

The list of main activities:1/Land purchase (144849.574 USD),2/ Preparatory and design documentation (49305.338 USD), 3/Construction works (2345530.958 USD), 4/Constuction supervision (40135.48 USD), 5/Supporting activities (dissemination 494.55 USD, project management 40098.993 USD).

4.7 Most important factors affecting the costs

Describe the most determinate factors affecting the costs:

The most determinate factors that affect the costs are realization works and material used, and repurchase of land.

5.1 Climate

5.2 Topography

Comments and further specifications on topography:

Altitudinal zone: 101-500 m a.s.l. (370-400 m a.s.l.)

5.3 Soils

5.4 Water availability and quality

5.6 Characteristics of land users applying the Technology

Indicate other relevant characteristics of the land users:

Population density: 50-100 persons/km2

Market orientation of production system: subsistence (self-supply), mixed (subsistence/ commercial, commercial/ market

5.7 Average area of land used by land users applying the Technology

5.8 Land ownership, land use rights, and water use rights

Land use rights:

• communal (organized)

Comments:

Land ownership: state, communal / village, individual, not titled

5.9 Access to services and infrastructure

6.1 On-site impacts the Technology has shown

Socio-cultural impacts

Ecological impacts

Biodiversity: vegetation, animals

Other ecological impacts

6.2 Off-site impacts the Technology has shown

6.3 Exposure and sensitivity of the Technology to gradual climate change and climate-related extremes/ disasters (as perceived by land users)

Gradual climate change

Gradual climate change

	Season	increase or decrease	How does the Technology cope with it?
annual temperature		increase	well

Climate-related extremes (disasters)

Meteorological disasters

	How does the Technology cope with it?
local rainstorm	well
local windstorm	not known

Climatological disasters

	How does the Technology cope with it?
drought	well

Hydrological disasters

	How does the Technology cope with it?
general (river) flood	well

Other climate-related consequences

Other climate-related consequences

	How does the Technology cope with it?
reduced growing period	well

6.4 Cost-benefit analysis

Comments:

No information about maintenance costs was given.

6.7 Strengths/ advantages/ opportunities of the Technology

Strengths/ advantages/ opportunities in the compiler’s or other key resource person’s view
reduction of catastrophic floods in the Tura Luka profile by approx. 10%
change in the landscape´s structure, provides a new landscape element – a water area and newly constructed accompanying greenery
Minimum flows increased by approx. 10%
The construction of the polder will bring about new and improved conditions for other organisms, as it will create new habitats.

6.8 Weaknesses/ disadvantages/ risks of the Technology and ways of overcoming them

Weaknesses/ disadvantages/ risks in the compiler’s or other key resource person’s view	How can they be overcome?
During the construction and operations arable land will not be usable.
Construction of the polder will create a new water area, but in terms of the technical design, the construction will not affect the water table in the greater area.
The effects on the air quality during the construction are normally associated with an increased risk of dust (construction, transport), but this will have a short-term impact.
There will be a temporary cessation of the use of certain habitats as a result of the taking of the land. It is expected that during the construction, trees will be cut down or damaged or that those habitats that are located in the bank vegetation of the Svacenicky creek and its immediate vicinity will disappear. This activity will affect approx. 0.35% of the entire length of the original riverbed. The taking of the land may result in injury or death to small mammals.

7.2 References to available publications

Title, author, year, ISBN:

http://www.enviroportal.sk/sk_SK/eia/detail/polder-svacenicky-jarok-myjava http://vodotika.sk/projects/polder-svacenicky-jarok/ http://www.vahostav-sk.sk/galeria-vahostav/vodohospodarske-stavby/protipovodnove-ochrany/polder-svacenicky-jarok-myjava