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  • 1. Програма за ТГС по ИПП България – Сърбия Exemplary implementation of the risk information in local spatial planning Key Planning Objectives The aims of planning policy on development and flood risk are to ensure thatflood risk is taken into account at all stages in the planning process to avoid inappropriatedevelopment in areas at risk of flooding, and to direct development away from areas athighest risk. Where new development is, exceptionally, necessary in such areas, policy aimsto make it safe without increasing flood risk elsewhere and where possible, reducingflood risk overall. Regional planning bodies (RPBs) and local planning authorities (LPAs) as themunicipalities of Godech (Republic of Bulgaria) and Dimitrovgrad (Republic of Serbia)should prepare and implement planning strategies that help to deliver sustainabledevelopment by: Risk assessment • identifying land at risk and the degree of risk of flooding from river, sea andother sources in their areas; • preparing Regional Flood Risk assessments (RFRAs) or Strategic Flood RiskAssessments (SFRAs) if appropriate, as freestanding assessments that contribute to theSustainability assessment of the plans; Risk management • includes framework policies for regional development which avoid flood riskfor people and property where possible, and manage any residual risk, taking intoaccount the impacts of climate change; EUROPEAN UNION Bulgaria – Serbia IPA Cross-border Programme“Assessment of flood risk – a base for sustainable development in upper part of Nishava catchment” 1
  • 2. Програма за ТГС по ИПП България – Сърбия • only permitting development in areas of flood risk when there are no reasonably available sites in areas of lower flood risk and the benefits of the development outweigh the flood risk; Reducing risk • safeguarding land from development that is required for current and future flood management, eg conveyance and storage of flood water, and flood defences; • reducing flood risk to and from new development through location, layout and design, incorporating sustainable drainage systems (SUDS); • using opportunities offered by new development to reduce the causes and impacts of flooding, eg surface water management plans; making benefits of green infrastructure for flood storage, conveyance and SUDS; re-creating functional floodplain; and setting back defences; A partnership approach • working effectively with the Environment Agency, the municipalities of Godech and Dimitrovgrad, Sofia University „St. Kliment Ohridski”, other operating authorities and other stakeholders to ensure that best use is made of their expertise and information so that plans are effective and decisions on planning applications can be delivered expeditiously; and • ensuring spatial planning supports flood risk management policies and plans, River Basin Management Plans and emergency planning.Using flood risk information for the purposes of territorial planningStep one Identification of all known flood sources which are probable to cause negative effect on the current or future develpment of the region;Step two To outline and map the regions with „low”, „mean” and high flood probability: EUROPEAN UNION Bulgaria – Serbia IPA Cross-border Programme “Assessment of flood risk – a base for sustainable development in upper part of Nishava catchment” 2
  • 3. Програма за ТГС по ИПП България – Сърбия Areas with "high" probability of flooding where the flood probability is 1:100 or higher / p higher or equal to 1% for rivers and 0.5% for tidal flooding /, and is included in Zone 3a with high probability, and Zone 3b is the functional floodplain. This zone comprises land where water has to flow or be stored in times of flood. SFRAs should identify this Flood Zone (land which would flood with an annual probability of 1 in 20 (5%) or greater in any year or is designed to flood in an extreme (0.1%) flood. Areas with "mean" flooding probability with between 1 and 100, and 1 and 1,000 chance of flooding /1% to 0.1%/ for river flooding and between 0.5% to 0.1% for tidal flooding is included in Zone 2 Mean Probability; Area with low flood probability flood having less than 1:1000 likeliness /less than 0.1%/ is included in Zone 1 Low Probability; Within the borders of the areas at flood risk, it is recommended to: develop appropriate land use /based on implementation of so called Sequential Test /, which will not expose people and their property at flood risk; Where the flood risk is identified as a limiting factor for the future development of the area, it is recommended that: possible mitigation /containment/ protection measures are taken, that can be integrated into spatial plans and schemes to reduce risk to people and property. An integral part of the Sequential approach is the classification of landuse according to the flood vulnerability degree. The categories were determined by the flood risk degree and the vulnerability degree of different land uses /including life of the landowners/ to flood damage. Sample vulnerability classification is presented in Table 1. Тable 1.Vulnerability ratioCategory Type of land useImportant infrastructure Main transport infrastructure /including evacuation roads/, strategic infrastructure /energy power plants, energy sub-stations, etc/Highly vulnerable Police departments, emergency departments, living EUROPEAN UNION Bulgaria – Serbia IPA Cross-border Programme “Assessment of flood risk – a base for sustainable development in upper part of Nishava catchment” 3
  • 4. Програма за ТГС по ИПП България – Сърбия estates, sources of dangerous substances, etc.Mean vulnerable Hospitals, hotels, kindergardens, prisons, restaurants, schools, waste depots, recreation resorts and facilities, etc.Low vulnerable Shops, offices, agricultural buildings, waste water purification plants and drinking waterInfrastructure relates to the water sector Protection facilities, sewage system and pumping stations, water supply and pumping stations, harbours, aquatic territories for recreation, etc. The next step is definition of standards for eligible land use in the zones 1, 2 and 3. An example of eligible land use is presented in Table 2.Category Important Infrastructure Highly Mean Low infrastructure related to the vulnerable vulnerable vulnerable water sectorZone 1 Allowed Allowed Allowed Allowed AllowedZone 2 Allowed Allowed Exception Allowed Allowed TestZone 3а Exception Test Allowed Not Exception Allowed allowed TestZone 3в Exception Test Allowed Not Not Not allowed allowed allowedTable 2. Eligible land use in zones of flood riskFlood vulnerability degree and compatibility of the types of landuse EUROPEAN UNION Bulgaria – Serbia IPA Cross-border Programme “Assessment of flood risk – a base for sustainable development in upper part of Nishava catchment” 4
  • 5. Програма за ТГС по ИПП България – Сърбия The assessment of the factors required by the Floods Directive /social,economic, etc / will apply to Zone 3 and Zone 2. The point here is that this will identifythose areas in which to develop land use categories with a high degree of vulnerabilityand the flood damage will be significant, i.e. those will be areas of "significant floodrisk". Identification of the areas where landuse categories with high vulnerabilitydegree are developed, meaning that during flood the damage will be significant = areaswith „significant flood risk”. EUROPEAN UNION Bulgaria – Serbia IPA Cross-border Programme“Assessment of flood risk – a base for sustainable development in upper part of Nishava catchment” 5