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Rabu, 08 Agustus 2012

Rencana Detil Penanganan Banjir di Wilayah Jabodetabekjur (1)


1.1. Latar Belakang

Bencana banjir yang akhir-akhir ini terjadi hampir di seluruh wilayah Indonesia dan khususnya di Jabodetabek merupakan indikator yang sangat nyata telah terjadinya kerusakan lingkungan.

BKT Tembus Laut

Proyek pembangungan Banjir Kanal Timur (BKT) sepanjang 23.9 KM dengan lebar 100m – 300m, pada akhir tahun ini akan tembus ke laut. Meski saat ini di beberapa titik masih terjadi penggalian, secara keseluruhan pembangungannya sudah mencapai 90%.

Daerah Aliran Sungai dan Banjir

Salah satu aspek yang kerap kali dilupakan berkaitan dengan terjadinya banjir di satu kota adalah banjir itu sangat berkaitan erat dengan kesatuan wilayah yang disebut dengan daerah aliran sungai (DAS).

The Ciliwung Recovery Program

Entering the second decade of 21st century, Jakarta is nothing but one of the most populated megacities in the world, with population already exceeding 10 million, scattered in an area whose size is no larger than Singapore. The economy may continue to boom in recent years, but the problems facing the megalopolis are pacing up at an accelerating rate, as well. One of the most ravaging, matter-of-timely thorns in the flesh that continuously keep on penetrating Jakarta is flooding, whose occurrence stains the Big Durian once in 5 years. Add water pollution, as a result of excess in trashes being thrown into the rivers with minimum punishment, contamination of industrial, household wastes, and still a long list to go on.

Rapid Hydrological Appraisal (RHA) in Ciliwung Watershed, West Java, Indonesia

Author: Kaswanto, Department of Landscape Architecture, Bogor Agricultural University (IPB)

Polemics caused by natural resources degradation in watershed area is still being a big concern recently. Therefore an urgent and huge step have to develop and overcome for the needs of stakeholders and public communites. One of the approach which has been done with quick problem solve related to hidrological condition in watershed area is Rapid Hydrological Appraisal (RHA). 

System Dynamics of Ciliwung River

To estimate runoff we have to consider:

a. Debit of ciliwung at Depok can be calculated using rating curve as follows : debit Q = 21.5(TMA+0.22)^1.5 m3/s , TMA = water level when proclaim alert :

Watershed Management in the Upper Ciliwung River

Ian Lavery, Sakshi Kapahi, Advisor: Sarah Slaughter
S‐Lab Project Spring 2009,  May 7, 2009

Executive Summary
United in Diversity (UID) is a Jakarta‐based nonprofit organization promoting stakeholder dialogue to solve complex issues facing Indonesia. UID and the MIT Sloan School of Management co‐sponsor IDEAS (Innovative Dynamic Education and Action for Sustainability) Indonesia, an educational program designed to develop leadership skills in diverse conditions.

Biocomplexity in the Environment: Emergent Properties of Alluvial River Flood Plains


Floodplain springbrook at Nyack
The conceptual foundation of this multi-disciplinary project is that river flood plains are regional centers of ecological organization. This system is dependent on interactions among dynamic, nonlinear physical and biological processes linking water, heat and materials (biota, sediment, plant-growth nutrients) flux and retention to fluvial landscape change.


During the real-time flood events, the operation of water surface system is very important and crucial to minimize the impacts of flood. The predictive reservoir operation method (PROM) provides optimal real-time operation of flood control systems with incorporation of current and forecasted storm events.

How to Make a Flood Model

The flood model comprises a hydrological model and a hydraulic model. The hydrologic model determines the runoff that occurs following a particular rainfall event. The primary output from the hydrologic model is hydrographs at varying locations along the waterways to describe the quantity, rate and timing of stream flow that results from rainfall events.