Transcript Document

Seminar: “Interagency Cooperation in Crisis Management and Disaster Response.
Tools and Practices for Training”
17-18 September 2013, Sofia, Bulgaria
Water management and Flood risk
assessment in Bulgaria
Petya Balieva – junior expert - Water use department, Water management directorate
Ministry of environment and water
Water management
In Bulgaria Water management is implemented at national and basin
level.
Ministry of environment and water (MOEW) is а governmental
institution committed with achievement of integrated water
management, which includes provision of the population with water in
good quality and sufficient quantity, as well as reduction of
consequences of floods and droughts.
MOEW manages the use of water in 53 complex and significant dams
in the country (included in Annex 1 of Water act). Their total volume
amounts to 6 692.03 mln.m3, which represents about 87% of the
volume of all dams build in the country. Supervising of such water
volume involve a sure protection of floods of the river valleys below.
In MOEW with an order of
the Minister is established
an operational unit, which
carries out daily analysis of
hydro-meteorological
conditions and the status of
water bodies in the country.
Upon receipt of information
from NIMH for intensive
rainfall and risk of high
water operational unit
carries out 24-hour duties.
National institute of meteorology and hydrology
Operational unit in MOEW
Analysis of the daily amount of precipitation, using the model
ALADIN (Map of rainfall)
System for announcing the MOEW in the event of heavy rains
forecast for the model ALADIN
Legend:
no data;
No intensive rainfall;
Intensive rainfall (over 15 mm for one hour);
Particularly intensive rainfall (over 20 mm for one hour);
Operational unit – Information flow
During high water to minimize
the flood risk in MOEW is
carried out:
1. Daily assessment of the
status of water bodies and
settlements (information
from utility companies, BD
and NIMH), which is sent
by e-mail to the Ministry of
Interior and MDFSCP;
2. Determination of volumes
in reservoirs during high
water
(disposition
to
operational structures by
NEC,
IS,
WSS
for
maintenance of certain
volumes in reservoirs);
3. Alert neighbors in case of
expected
high
water,
through the Ministry of
Foreign Affairs.
COMUNITIES
(status of rivers,
dikes,
hydrotechnical
constructions,
adverse effect of
water)
BASIN
DIRECTORATES
“Irrigation systems” Ltd
“National electricity
company” Ltd
“Water supply and
sewerage” Ltd
(Reservoirs condition)
NIMH
(hydrological &
meteorological
forecast)
MOEW
MINISTRY of INTERIOR –
Main directorate fire safety and civil
protection
MINISTRY of
FOREIGN
AFFAIRS
Directive 2007/60/ЕС on the assessment
and management of flood risks
Assessment and management of flood risks for the Republic of
Bulgaria is subject to the European Floods Directive (DN), which
entered into force on 26.11.2007 and has been transposed into
national legislation with the amendment of the Water Act in August
2010.
The Directive requires Member States to implement long-term
planning approach to reduce the risk of flooding in three stages:
1. Preliminary Flood Risk Assessment (PFRA)
22.12.2011
2. Flood hazard maps and Flood risk maps
22.12.2013
3. Flood Risk Management Plan (FRMP)
22.12.2015
Preliminary Flood Risk Assessment (PFRA)
PFRA is carried out according to "Methods for flood risk assessment a preliminary assessment" (article 187c, paragraph 2, item 6 of WA)
agreed by the Minister of environment and water.
Preliminary Flood Risk Assessment (PFRA)
Main purpose of PFRA
- to review existing and readily available information on past floods and
their adverse consequences;
- To analyze the possibility of repetition in the future, incl. potential
adverse consequences;
- To assess the possible adverse consequences of potential future
floods;
- to identify significant past and potential future floods.
PFRA Results
Total registered historical floods in the country - 1903 pieces
Significant Significant
Basin directorate past floods future floods
(piece)
(piece)
DRBD
571
138
BSBD
222
241
EARBD
137
153
WARBD
98
41
total
1028
573
Плевен
Басейнова дирекция
Дунавски район
Варна
Басейнова дирекция
Черноморски район
Пловдив
Благоевград
Басейнова дирекция
Западнобеломорски район
Басейнова дирекция
Източнобеломорски район
National criteria contained indicators for 4 categories:
• „Human health“,
• „Economic activity“,
• „Environment“,
• „Cultural heritage“
Public consultation
At every stage of PFRA
development the results are
announced
publicly
and
consultation with stakeholders
and the public are carried out.
The results of the public
consultation are included in
the final versions of the
documents.
Publication of PFRA
The results are published on the websites of the 4 Basin Directorates and
MOEW and are displayed on an interactive Web-based maps.
MOEW → http://www.moew.government.bg/?show=top&cid=67
DRBD → http://www.bd-dunav.org/content/upravlenie-na-vodite/upravlenie-na-riska-otnavodneniia/predvaritelna-ocenka-na-riska-ot-navodneniia-v-dunavski-rayon-za-baseynovoupravlenie/porn-v-dunavski-rayon/
BSBD → http://bsbd.org/v2/bg/index_bg_2934486.html
EARBD → http://bd-ibr.org/details.php?p_id=243&id=276
WARBD → http://www.wabd.bg/bg/index.php?option=com_content&task=view&id=987&Itemid=72
Areas with potential significant flood risk
(APSFR)
PFRA is the basis for determining areas with significant potential flood risk
(ASPFR) acc.art.5 of Directive 2007/60/EC and Art. 146g. of the Water Act.
The Areas include places, where by PFRA
significant past and potential future
floods are identified, which could have
significant
adverse
effects.
The risk is classified into three levels:
low, medium and high.
Uniform table with thresholds of
individual criteria in four main categories
is used - human health, economic
activity, environment and cultural
heritage.
The final version of RZPRN is presented
in the form of lines to be selected only
those sections of water bodies, which
will be subsequently mapped the flood
risk.
The determined ASPFR
(draft) are presented
for consideration by
the stakeholders and
the public.
ASPFR are approved by the Minister
of the Environment and Water.
Flood hazard maps and flood risk maps
After approval of ASPFR detailed maps of flood hazard will be produced, based on
which it will be assessed the risk to human health, economic activity, environment
and cultural heritage.
 Flood hazard maps shall cover the geographical areas which could be flooded
according to the following scenarios::
1. With a low probability (likely return period 1000 years, unforeseeable events);
2. With medium probability (likely return period ≥ 100 years);
3. With high probability (likely return period ≥ 20 years).
 Flood risk maps shall show the potential adverse consequences associated with
the relevant flood scenarios and expressed in terms of the following::
1. the indicative number of inhabitants potentially affected;
2. type of economic activity of the area potentially affected;
3. Sources of pollution, incl. installations listed in Annex № 4 to Art. 117 of the
Environment protection act, which may cause accidental pollution in case of
flooding, and protected water areas.
Flood Risk Management Plan
•
Measures for reduction of likelihood of flooding and/ or reduction of potential
adverse consequences.
Measures must be focused at prevention, protection, preparedness, including
forecast of flooding and early warning system.
• Coordination throughout the whole river basin, incl. neighbor countries;
• Application of the solidarity principle – no measures, increasing the risk (for
another country) below the river valley;
Measures may include:
 sustainable land use practices,
 improvement of water retention as well as the,
 controlled flooding of certain areas in the case of a flood event.
For coordination of the activities in the country Catalog of objectives and
measures for flood risk management and Methodology for assessing costs and
benefits of the measures set out in PFRA is intended to be developed at national
level.
• Update – every 6 years, incl. impact of climate change (PFRA-2018, Maps 2019, FRMP -2021).
National Center for Water Management in
Real Time (NCWMRT)
To achieve sustainable water use it is necessary that the responsible
institutions have updated information in real time, especially during
extreme events - floods and droughts. The solution of this problem is
related to the establishment of a center, in which by an national system for
monitoring, forecasting and processing of incoming updated information,
effective decisions on water management will be taken.
The main functions of the NCWMRT will be:
• Provide real-time information on the quantity of water resources;
• Short, medium and long-term forecasting of water resources and
assessing flood risk and drought risk;
• Perform activities, which are assigned by Flood risk management plans.
Funding and implementation of the project is scheduled to take place
within the Operational Programme "Environment 2014 - 2020".
Database
for water bodies
and water use
Data from
NIMH
forecast
NCWMRT
Data from
monitoring
equipment:
Rain gauge stations, Water
level stations,
Meteorological stations,
local meteorological radar,
Water quality monitoring
system
Data processing
Hydrological and hydrodynamic model
• Precipitation – runoff model
• 1D River model
→ Results – exceeding / decreasing
from the setup threshold
Dissemination of
results
to stakeholders
Taking appropriate
action
Establishment of the center will support the
implementation of the requirements and
commitments of Bulgaria to improve the water
management and the management of flood risks.
in case of forecasted
flood / drought
THANK YOU
FOR YOUR ATTENTION!
http://www.moew.government.bg
Ministry of environment and water