• Share
  • Email
  • Embed
  • Like
  • Save
  • Private Content
Flood and Water Scarcity in Jakarta
 

Flood and Water Scarcity in Jakarta

on

  • 483 views

http://greeninvestmentindonesia.net/web/activities/meetings/104-focused-group-discussion-1st-session

http://greeninvestmentindonesia.net/web/activities/meetings/104-focused-group-discussion-1st-session

Statistics

Views

Total Views
483
Views on SlideShare
483
Embed Views
0

Actions

Likes
0
Downloads
11
Comments
0

0 Embeds 0

No embeds

Accessibility

Categories

Upload Details

Uploaded via as Adobe PDF

Usage Rights

CC Attribution-NonCommercial LicenseCC Attribution-NonCommercial License

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

    Flood and Water Scarcity in Jakarta Flood and Water Scarcity in Jakarta Presentation Transcript

    • Find The Root Problem of Water (Flooding & Scarcity of Raw Water) Fortuga ITB FATCHY.M – June 2013 Jl B mawar 39, Cipete Jak Sel 021-75900389 , fatchy@indosat.net.id
    • JAKARTA PROFILE & FACTS  JKT area = 661 Km2  JKT population ( 2012 ) = 10,1 million people  Rainfall = 2,300 mm/Year ( 2.3 M3/M2/Year )  Need water = 737.3 million M3 / Year  Dry season JKT shortage of water = 10 M3/sec  Amount of rainwater in JKT = 1.5 billion M3 / Year  JKT flooding if rainfall > 40 mm/ 2 hours
    • The Root Problem of JAKARTA • “ Land use change without conservation “ • “ Flood solution always by horizontal drainage method“ • When C (Coef Run Off ) increase in size resulted Q ( Discharge ) it getting bigger after that will be enlarged A ( cross section area ). Q = 0,278 C x i x A Q C I A : Discharge (m3/sec) : Coefisien run off : intensity rainfall (mm) : catchment area ( km2 ) Q=VxA Q : Discharge (m3/sec) V : Velocity (m/sec) A : cross section area ( m2 )
    • Ideal Cycle , The Time of Prabu Siliwangi : year 1.482 – 1.521 Forest Delta Q <<
    • Ideal Cycle , The Time of Prabu Siliwangi : year 1.482 – 1.521 P = SR + I + ( T + E ) Forest & Village Infiltration ( I ) = 73% ~95% 1 I Surface Run Off ( SR ) = 5 % ~ 27% 2 I 3 4 1. 2. 3. 4. 5. Un Con CLAY-1 Confined-1 CLAY-2 Confined-2 5 SR SEA LEVEL
    • Change of Land use – 1 Tea Garden Puncak : Dutch Time, Year 1900
    • Change of Land use – 1 Flood Canal by Prof H van Breen th 1920 Q = 0,278 C I A Q=VxA Tea Garden P Infiltration = 50% ~ 70% 1 I 2 Surface Run Off = 30% ~ 50% I 3 SR Q 4 1. 2. 3. 4. 5. Un Con CLAY-1 Confined-1 CLAY-2 Confined-2 5 SEA LEVEL
    • Change of Land use - 2 Mampang river : mirror of Jakarta July 2006 (100 % Catchment Area 31 Km2 at JKT) Feb 2007
    • Change of Land use - 2 JKT 2013 flooding if rainfall > 40 mm/2 hours Big City • Infiltration = 5% ~ 27% • Surface Run Off = 73% ~ 95% West Canal 1 I “OVERLOAD” 2 East Canal ? 3 Reduce Ground Water 4 1. 2. 3. 4. 5. Un Con CLAY-1 Confined-1 CLAY-2 Confined-2 5 SR Flooding SEA LEVEL RISE
    • SOLUTION for JAKARTA “ Total Conservation “ Change the Paradigm : horizontal drainage  vertical drainage Big City + Conservation • Infiltration = 73% ~ 95% P • Surface Run Off = 5% ~ 27% 1 West & East CANAL 2 People easy To get Ground Water “Light Load” 3 Ground Water Abundant 4 1. 2. 3. 4. 5. Un Con CLAY-1 Confiined-1 CLAY-2 Confined-2 5 Free Flooding SEA LEVEL
    • I. Flood solutions ( North Jakarta ) 1. Muara Baru Dam 2. Pond ( polder system ) 3. Rain Harvesting
    • II. Flood solutions ( South JKT ) : Change the Paradigm : horizontal drainage to vertical drainage 1. Development of Green space (RTH ) to 30 % 2. Development of Blue space ( RTB ) to 12 %. (Waduk/ Danau/ Embung Resapan ) 3. Artificial Recharge ( 3.7 million Sumur Resapan ) by Pemda DKI 60 % and by middle – upper class society 40 % 4. Lower class society ( biopori )
    • III.Parcel Flood Solutions : from Depok, Bogor & Puncak 1. Waduk resapan at “ Old River “ • Location : Angke river, Pesanggrahan river, Grogol river , Krukut river , Ciliwung river , Cipinang river and Sunter river. • Raw water from Waduk Resapan for PDAM Jakarta 2. Vertical deep tunnel > 300 m until Bojongmanik /Klapanunggal formation( Limestone ) , water loss formation.
    • Potential catchment areas Jakarta
    • Vertical Drainage SAMPLE of SUMUR RESAPAN - PEMDA SUMUR RESAPAN CONTROL BOXES ROAD SURFACE
    • Cross section ( Bogor –Jakarta )
    • Engineering Geologic Map of Jakarta Bogor Area Potential sites of “waduk resapan” Raw water from Waduk Resapan for PDAM Jakarta
    • Zero Run Off Program Vertical drainage ( Sumur Resapan ) Kantong Air Sumur resapan Zero Run Off Sumur resapan Sumur resapan Kantong Air
    • Sample of Horizontal Drainage
    • Thank you, arigato gozaimasu, terima kasih.