Presentation is loading. Please wait.

Presentation is loading. Please wait.

Jakarta Floods Hongjoo Hahm World Bank JanJaap Brinkman

Similar presentations


Presentation on theme: "Jakarta Floods Hongjoo Hahm World Bank JanJaap Brinkman"— Presentation transcript:

1 Jakarta Floods Hongjoo Hahm World Bank JanJaap Brinkman
Deltares - Delft Hydraulics The World Bank

2 Jakarta flood management
Part 1: The basics - Spatial Planning Part 2: The flood of February 2007 Part 3: No-regret measures Part 4: Tide and High tide floods Part 5: Water specialist center, short-term actions Part 6: Actions and financing structure The World Bank

3 Part 1 The basics: Spatial planning “We live in a changing world”
The World Bank

4 Total urban area % (java-bali spatial plan)

5 Total urban area % (java-bali spatial plan)

6 It is really happening Landuse, Jabodetabek
1992 2002

7 It is really happening Urban area, G. Pangrango 1992 - 2001
The World Bank

8 Land-use & Rainfall runoff (Katulampa)
Slow runoff Non-Urban Land-use & Rainfall runoff (Katulampa) 0.9 m3/s 400 Fast runoff Urban m3/s The World Bank

9 Part 2 Flood February 2007 Hydrology
The World Bank

10 Daily rainfall Feb 2 Feb 1; 07:00 Feb 2; 07:00 The World Bank

11 Daily rainfall Feb 4 Feb 3; 07:00 Feb 4; 07:00 The World Bank

12 Inflow Ciliwung Febr 2007 Katu Lampa - Manggarai
17 16 15 14 12 13 10 11 8 9 7 6 6 5 4 3 2 Katu Lampa 1 The World Bank

13 Flood February 2007 Hydraulics & Flood extent
Unique “Complete upstream-downstream flood modelling framework now available for all major drainage including all 13 rivers” The World Bank

14 The World Bank

15 The World Bank

16 The World Bank

17 West Banjir canal

18 Part 3 No-regret ST Measures Rehabilitation “Restore original-available design capacity” -Dredging -Dike improvement The World Bank

19 C: River Embankment Rehabilitation
1. Confirmation of Scope of Works C: River Embankment Rehabilitation West Banjir Canal – Longitudinal Section The World Bank 1 August 2007

20 C: River Embankment Rehabilitation
1. Confirmation of Scope of Works C: River Embankment Rehabilitation Cengkareng Floodway – Longitudinal Section The World Bank 1 August 2007

21 A: Urgent Maintenance Dredging
1. Scope of Works A: Urgent Maintenance Dredging National Importance

22 West banjir canal design

23 No-regret ST Measures “East-Banjir Canal”
The World Bank

24 Stepwise approach: Cipinang-Sunter-Buaran-Cakung
WBC EBC Manggarai Stepwise approach: Cipinang-Sunter-Buaran-Cakung (With increased Cipinang-Sunter capacity) Finish EBC-NE stretch Optimize Manggarai gate Connect with Ciliwung Sunter Cipinang Ciliwung

25 Increase capacity

26 Increase capacity

27 No-regret ST Measures EBC-CAK-CIL-Manggarai Simulation 2007
The World Bank

28 EBC-CAK-CIL-Manggarai

29

30 Part 4 Tidal analysis High Tide floods
The World Bank

31 Animation of tide in South China Sea

32 Prediction based on analysed tidal constituents Tanjung Priok
Spring tide analysis Astronomic tide Prediction based on analysed tidal constituents Tanjung Priok Only spring tides are plotted Upper plot: 18.6 year cycle caused by eliptical orbit moon Lower plot: semi-annual cycle presumably caused by interaction diurnal and semi-diurnal spring-neap cycle Sea level anomaly

33 Flood event June 2007 Increase in water level due to MSLA
February 2007, not exceptional flooding reported at June 14, ~10.00 pm Increase in water level due to MSLA Spring tide (at semi-annual high) The World Bank

34 Future high spring tides
Next semi-annual high spring tide: October 29, November 26, December , January 21 Following semi-annual high spring tide: June 4, 2008 Month with the highest average MSLA! The World Bank

35 November 26, 2007

36 Subsidence The World Bank

37 Land-use change 1980 2003 The World Bank

38 Pluit 1989, 2007, 2025 (Positive view) Nov 1989 Nov 2007 Nov 2025
Pasar Ikan cm 240 cm Nov 26, 2007 215 220 225 Climate change Sea level rise Critical level 2007 190 cm Oct 29, 2007 subsidence 140 cm 40-60 cm subsidence 40-60 cm The World Bank

39 Pluit 1989, 2007, 2025 (Positive view) Nov 1989 Nov 2007 Nov 2025
Pasar Ikan cm 240 cm 215 220 225 Nov 26, 2007 Climate change Sea level rise Sea level Nov 26 Critical level 2007 Oct 29, 2007 190 cm 18.6 year cycle subsidence 140 cm 2025: cm increase 40-60 cm subsidence 40-60 cm The World Bank

40 High tide floods 2007: “Signs of a sinking Jakarta”
The World Bank

41 Jadebotabek Water Resources Management Study (JWRMS,1994)
The World Bank

42 Part 5 “Strong knowledge base” “Short-term action”
The World Bank

43 Still a lot of confusion!!
Flood Hazard Mapping Still a lot of confusion!! Who is right? Who is going to solve this? Who dares to make decision? One storey from specialists required! “Water knowledge center” for DKI - Jabodetabek The World Bank

44 Part 5 Actions and Financing mechanism
The World Bank

45 ACTION PLAN Short Term: Dredging / East Banjir Canal / Manggarai Gate
Stop Ground Water Extraction (industrial) Early Warning System Strict Building Codes The World Bank

46 ACTION PLAN Medium Term: Bulk Water Supply
Stop Ground Water Extraction (household) Solid Waste Management Low Income Housing / Slum Improvement The World Bank

47 ACTION PLAN Long Term: Water Quality
Water Retention Basin / Catchment Area / Sea Defense Land Use and Spatial Planning The World Bank

48 Hongjoo Hahm World Bank JanJaap Brinkman Deltares – Delft Hdraulics
Jakarta Floods Hongjoo Hahm World Bank JanJaap Brinkman Deltares – Delft Hdraulics Thank you! The World Bank


Download ppt "Jakarta Floods Hongjoo Hahm World Bank JanJaap Brinkman"

Similar presentations


Ads by Google