ministry of environmental and natural resources protection ... · ministry of environmental and...

18
Ministry of Environmental and Natural Resources Protection of Georgia National Environmental Agency Assessment of Suitable Flood Mitigation Measures in Tbilisi Dr. George Kordzakhia National Environmental Agency REGIONAL FORUM FOR CTCN NATIONAL DESIGNATED ENTITIES 30 May - 1 June 2017 Tbilisi, Georgia

Upload: others

Post on 03-Jul-2020

7 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: Ministry of Environmental and Natural Resources Protection ... · Ministry of Environmental and Natural Resources Protection of Georgia National Environmental Agency Assessment of

Ministry of Environmental and Natural Resources Protection of Georgia National Environmental Agency

Assessment of Suitable Flood Mitigation Measures in Tbilisi

Dr. George Kordzakhia

National Environmental Agency

REGIONAL FORUM FOR CTCN NATIONAL DESIGNATED ENTITIES

30 May - 1 June 2017

Tbilisi, Georgia

Page 2: Ministry of Environmental and Natural Resources Protection ... · Ministry of Environmental and Natural Resources Protection of Georgia National Environmental Agency Assessment of

SUMMARY OF THE CTCN ASSISTANCE (1)

In the past, the City of Tbilisi was crossed by a number of small rivers and temporary streams. Currently the majority of these streams flow through artificial tunnels, culverts and pipes. The land above these buried river beds is occupied by residential houses and other infrastructure. Hydraulic capacity of the piped and closed river sections is insufficient to carry flood discharges. Flash floods and mudflows occurring on these small rivers as a result of heavy rains hit from time to time different parts of Tbilisi, causing heavy damages or even catastrophes with number of victims.

ofMINISTRY

OF

ENVIRONMENT

PROTECTION

AND NATURAL

RESOURCES OF

GEORGIA

NATIONAL

ENVIRONMENT

AL AGENCY

Page 3: Ministry of Environmental and Natural Resources Protection ... · Ministry of Environmental and Natural Resources Protection of Georgia National Environmental Agency Assessment of

SUMMARY OF THE CTCN ASSISTANCE (2)

The CTCN technical assistance relates to knowledge-based recommendations of appropriate actions preventing disastrous consequences of possible floods of Dunkniskhevi River within Tbilisi, as part of climate change adaptation. Envisaged are mainly following analyses and services: Detailed field surveys and topographical measurements for

parameters and data needed for both hydrological and hydraulic modelling in the Dunkniskhevi River catchment.

Detail flood mapping – production of flood hazard and flood risk maps of Dunkniskhevi River floodplains in Tbilisi.

Calculation and evaluation of necessary parameters of hydraulic structures as for example bridges, piped sections and tunnels, their hydraulic capacity and hydraulic performance, based on hydrodynamic modelling of Dunkniskhevi River, taking into account climate change effects

ofMINISTRY

OF

ENVIRONMENT

PROTECTION

AND NATURAL

RESOURCES OF

GEORGIA

NATIONAL

ENVIRONMENT

AL AGENCY

Page 4: Ministry of Environmental and Natural Resources Protection ... · Ministry of Environmental and Natural Resources Protection of Georgia National Environmental Agency Assessment of

SUMMARY OF THE CTCN ASSISTANCE (3)

Hydrodynamic modelling flood water levels of Dunkniskhevi River. The hydrodynamic model could be possibly calibrated on the basis of reconstruction of relevant historical flood event, where calibration parameters of model could be set to values which enable real representation of local conditions.

Recommendations for eventual establishment of regular hydro-meteorological observations and monitoring in Dunkniskhevi River catchment

Proposal of preventive measures (one of which could be flood forecasting and warning system) to prevent or mitigate further flood disasters on Dunkniskhevi River, taking into account climate change effects

ofMINISTRY

OF

ENVIRONMENT

PROTECTION

AND NATURAL

RESOURCES OF

GEORGIA

NATIONAL

ENVIRONMENT

AL AGENCY

Page 5: Ministry of Environmental and Natural Resources Protection ... · Ministry of Environmental and Natural Resources Protection of Georgia National Environmental Agency Assessment of

SUMMARY OF THE CTCN ASSISTANCE (4)

All these necessary actions regarding management of flood disasters in Dukniskhevi River basin as well as evaluation of climate change consequences to extreme flood regime by the governmental order is the competence of the Hydrometeorological Department (National Hydrometeorological Service / NMHS/ of the National Environmental Agency /NEA/.

It is obvious that training and technology transfer would be implemented to NMHS of NEA personnel, which will allow to perform similar hydrological and hydrodynamic modelling analyses (definition of flood discharges, flood hazard and risk mapping, calculation and evaluation of hydraulic performance and capacity of bridges, tunnels and piped sections, evaluation of changes in catchment and climate change effects, study of the impact of modern climate change) on other rivers and streams within Tbilisi (other tributaries of the Kura River), or elsewhere in Georgia.

ofMINISTRY

OF

ENVIRONMENT

PROTECTION

AND NATURAL

RESOURCES OF

GEORGIA

NATIONAL

ENVIRONMENT

AL AGENCY

Page 6: Ministry of Environmental and Natural Resources Protection ... · Ministry of Environmental and Natural Resources Protection of Georgia National Environmental Agency Assessment of

მეტეოროლოგიური სადგური

ტემპერატურა და სინოტივეty

წნევა ქარის სიჩქარე და მიმართულება

ნალექმზომი

Page 7: Ministry of Environmental and Natural Resources Protection ... · Ministry of Environmental and Natural Resources Protection of Georgia National Environmental Agency Assessment of

ჰიდროლოგიური საგუშაგო

მეტეოროლოგიური საგუშაგო

Page 8: Ministry of Environmental and Natural Resources Protection ... · Ministry of Environmental and Natural Resources Protection of Georgia National Environmental Agency Assessment of

EumetCast სისტემა უზრუნველყოფს

თანამგზავრული სურათების მოწოდებას

თითქმის რეალურ დროში

Page 9: Ministry of Environmental and Natural Resources Protection ... · Ministry of Environmental and Natural Resources Protection of Georgia National Environmental Agency Assessment of

მიმდინარე სადამკვირვებლო ქსელი მოიცავს:

• მეტეოროლოგიური: 11 კონვენციური 67 ავტომატური 26.

• ჰიდროლოგიური: 20 კონვენციური, 28 ავტომატური სადგური

ჰიდრომეტში არსებობს სადგურების აღწერა, მაგრამ ეს არ არის შესრულებული ყველა სადგურისათვის და მეტამონაცემები არ არის, ამიტომაც სადგუ-რების განლაგების ცვლილებები შესასწავლია

მეტეოროლოგიური ქსელის რიცხოვნება

ჰიდროლოგიური ქსელის რიცხოვნება

სადამკვირვებლო ქსელის ცვლილების დინამიკა

Page 10: Ministry of Environmental and Natural Resources Protection ... · Ministry of Environmental and Natural Resources Protection of Georgia National Environmental Agency Assessment of

სატელეკომუნიკაციო სისტემა

Retim2000

Gis-метео UniMAS

საინფორმაციო ფორმატები

ტექსტური,

გრაფიკული,

თანამგზავრული სურათები;

NWP:

ტულუზა, ARPEGE

ბრეკნელი,

რედინგი, ECMWF

პროდუქტები

Firewall

Router TRANSMET

Page 11: Ministry of Environmental and Natural Resources Protection ... · Ministry of Environmental and Natural Resources Protection of Georgia National Environmental Agency Assessment of

ტელესაკომუნიკაციო სისტემა მონაცემთა გაცვლისათვის

Page 12: Ministry of Environmental and Natural Resources Protection ... · Ministry of Environmental and Natural Resources Protection of Georgia National Environmental Agency Assessment of

SINERGIE

Page 13: Ministry of Environmental and Natural Resources Protection ... · Ministry of Environmental and Natural Resources Protection of Georgia National Environmental Agency Assessment of

ჰიდროლოგიურ მონაცემთა დამუშავების სისტემა AQUARIUS

ჰიდროლოგიური სადგურების ოპერირება (წყლის

დონეები, წყლის ტემპერატურები და სხვა).

დაკვირვებული მონაცემების შეყვანა და დამოწმება (კონტროლი)

ჩამონადენის გაზომვები (ნაკადის გაზომვა, ADCP) და შეფასებები

ხარჯის მრუდები (წყლის დონის-ხარჯის

დამოკიდებულება) – აგება და დამოწმება

წყლის დონის დროითი სერიები => ხარჯის დროით

სერიებში ტრანსფორმაცია

ხარჯის მონაცემთა კორექტირება და დამოწმება

მონაცემების მომზადება მონაცემთა ბაზებში შესატანად

Page 14: Ministry of Environmental and Natural Resources Protection ... · Ministry of Environmental and Natural Resources Protection of Georgia National Environmental Agency Assessment of

მონაცემთა კვანძითი ფორმები წყლის

დონეები

წყლის ხარჯი

Page 15: Ministry of Environmental and Natural Resources Protection ... · Ministry of Environmental and Natural Resources Protection of Georgia National Environmental Agency Assessment of

ხარისხის შეფასება/ ხარისხის კონტროლი

Page 16: Ministry of Environmental and Natural Resources Protection ... · Ministry of Environmental and Natural Resources Protection of Georgia National Environmental Agency Assessment of

დიდი მადლობა!

Page 17: Ministry of Environmental and Natural Resources Protection ... · Ministry of Environmental and Natural Resources Protection of Georgia National Environmental Agency Assessment of

ნალექების ჯამის წლიური განაწილება (1961-1900)

177 სადგურის მიხედვით

86 სადგურის მიხედვით

Page 18: Ministry of Environmental and Natural Resources Protection ... · Ministry of Environmental and Natural Resources Protection of Georgia National Environmental Agency Assessment of

დიდი მადლობა ყურადღებისათვის