15308084 kristy-rosyemary
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1) The study examined the relationship between land use, surface runoff, and water quality in the Cikapundung River in Bandung City from 2006-2010. 2) Results showed that agricultural land comprised 53.8% of the catchment area, and rapid urban development led to increases in population density and impervious surfaces, altering the volume and velocity of surface runoff. 3) Water quality measurements of dissolved oxygen, biochemical oxygen demand, and chemical oxygen demand indicated increasing pollution levels from 2004 to 2011 at sampling points along the Cikapundung River.
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15308084 kristy-rosyemary
- 1. Kristy Rosyemary and Idris Maxdoni Kamil Department of Environmental Engineering Faculty of Civil and Environmental Engineering Institut Teknologi Bandung
- 2. Introduction Objective Results & Methods Discussion Conclusion
- 3. When surface runoff contact with the surface of the ground, water may become contaminated by contact with animal and human (Anderson et al, 1987)
- 4. West Java Bandung City
- 5. 322,4 mm 166,75 mm (2010) (2008) 154,7 mm (2006) 14.314/km2 14.192,1/km2 (2010) (2008) 13.729,7/km2 (2006)
- 6. The amount of volume The amount of DO and of water flow of COD concentration of Cikapundung River Cikapundung River Relationship between Relationship between surface runoff and water land use and surface quality & quantity of runoff Cikapundung River
- 7. Primary and secondary data Identification collection
- 8. RESULTS & DISCUSSION
- 9. Land Use Percentage Cikapundung River has catchment area of Agricultural 53.8% 111.3 km2 in upstream, 90.4 km2 Habitation 25.3% in midstream, and 76.5km2 in Forest 3.71% downstream Field 6.62% Bush 5.3% Land 5.64%
- 10. (Source: PSDA Provinsi Jawa Barat) As main urban drainage As city attraction (Curug Dago, Maribaya and City Zoo) As raw water source for local drinking water company (PDAM Kota Bandung) and other industries
- 11. 7 6 Stream flow (m3/sec) 5 4 Maribaya 3 Gandok 2 Pasirluyu 1 0 2006 2007 2008 2009 2010 Time (year) (Source: PSDA Provinsi Jawa Barat)
- 12. Parameters Year Area Quality that didn’t Maribaya Lightly polluted 2006 Pasirluyu Lightly polluted meet Dayeuh Kolot Lightly polluted quality Maribaya Middle polluted standards 2007 Pasirluyu Heavy polluted are: Dayeuh Kolot Heavy polluted TSS, DO, Maribaya Heavy polluted 2008 Pasirluyu Heavy polluted BOD, total Dayeuh Kolot Heavy polluted coliform Maribaya Heavy polluted and fecal 2009 Pasirluyu Heavy polluted coliform Dayeuh Kolot Heavy polluted Maribaya Heavy polluted 2010 Pasirluyu Heavy polluted Dayeuh Kolot Heavy polluted (Source: PSDA Provinsi Jawa Barat)
- 13. Sampling location Temperature DO COD Condition (oC) (mg/l) (mg/l) Jl. Kebon Sirih 24.9 10.58 59.61 Sunny Jl. Kebon Bibit Barat 24.2 11.2 20.39 Sunny Jl. Kebon Bibit 23.5 11.37 4.71 Sunny Jl. Pelesiran 23.5 11.43 9.74 Sunny Jl. Siliwangi 23.6 11.22 8.52 Sunny Quality standards (PerDa JaBar No. 39/2000) DO: > 3 mg/l COD: 10 mg/l
- 14. Rate of population Land use density change increase Volume and Natural land velocity of change into surface runoff constructed increase land
- 15. Reduction in groundwater recharge Water may dissolve some chemicals and flows directly into a river Changes in peak discharge time
- 16. 6 5 4 DO (mg/liter) 3 Upstream Midstream 2 Downstream Quality standard 1 0 2002 2004 2006 2008 2010 2012 Time (year)
- 17. 400 350 300 250 BOD (mg/l) Upstream 200 Midstream 150 Downstream 100 Quality standard 50 0 2002 2004 2006 2008 2010 2012 -50 Time (year)
- 18. 450 400 350 300 COD (mg/liter) 250 Upstream 200 Midstream 150 Downstream Quality standard 100 50 0 -502002 2004 2006 2008 2010 2012 Time (year)
- 19. Bandung City has developed very rapidly and this leads to land use changes Land use changes will impact the volume and velocity of surface runoff
- 20. The increase of surface runoff volume causing a stream flow fluctuation in Cikapundung River, specially in midstream section Surface water that contaminated by contact with pollutants in surface area and flows directly into a river will affect on water quality in Cikapundung River
- 21. DO, BOD and COD concentration in Cikapundung River decreased from 2004 to 2007, but increased again in the next year until 2011
Editor's Notes
- Assalamualaikumwrwb. Good morning ladies & gentlemen, Good Morning Mr. Suhar, My name is Kristy Rosyemary. I am going to present my research about “the impact of surface runoff to water quality and quantity of cikapundung river”
- There are the contents of my presentation, we start with the introduction, then the objective, the next is methods, and we’re going to results & discussion, and the last one is conclusion
- Surface runoff is rainwater that does not strain into the ground and flows over the surface to the lower altitude. According to Anderson, when surface runoff contact with the surface of the ground, water may become contaminated by contact with animal and human wastes and it can affect the quality of water bodies
- This research focused on Cikapundung around Bandung City. Cikapundung river crosses Bandung City along 15.5 km and 60% from it is around densely populated with one hundred fifty eight bulidings.
- Based on West Java Province Central Bureau of Statistics, average rainfall and population density of Bandung City increased from 2006 to 2010. It surely can affect the water quality and quantity of Cikapundung River
- And we’re going to the objective of this research. There are: to know 1, to measure 2, to identify poin 3 and poin 4
- This research has two main stages. 1st stage is primary and secondary data collection. Primary data consists of do & cod concentration. Secondary data consists of average rainfall, average water flow, and land uses of cikapundung river. And the 2nd stage is identification. This research identified relationship between land use and surface runoff, relationship between surface runoff and quality & quantity of CikapundungRiver
- Oke, now we’re going to the results and discussion
- As you can see, most of cikapundung area use to agricultural and habitation. Cikapundung has three main area, there are upstream from Maribaya to Gandok which mostly consist of green area like agricultural, forest and land. Midstream from Gandok to DayeuhKolot, and downstream in DayeuhKolot which mostly consists of habitation
- Now we talk about potency of cikapundung river. Because it crosses Bandung City, Cikapundung River has potency to be main urban drainage, and also as city attraction such as Curug Dago, Maribaya and City Zoo, and also as raw water source for local drinking water company and other industries.Based on PSDA JaBar, PDAM Kota Bandung required sekian2, PT Kimia Farma required sekian2, PT dailatek required sekian2, and artostek required sekian2
- And this is stream flow of cikapundung river from 2006 to 2010. as you can see, there is an extreme condition in 2010. There is a big different stream flow between upstream and downstream
- This is water quality status of Cikapundung River based on PSDA Jabar. The table shown that water quality of cikapundung river decreased from 2006 to 2010. from lightly polluted to heavy polluted
- The research has conducted on oct, 2012. you can see the results on the table that cod concentration in kebonsirih and kebonbibitbarat didn’t meet quality standards
- Now we will talk about how land use changes can effect on surface water. We know that Bandung is capital city of west java, so it surely the rate of population density will increased. This leads to changes in land use, such as the using of natural land has changed into constructed land. And in the end, it can be increasing the volume and velocity of runoff
- This are land use changes effect on surface runoff and the following impact. First, surface runoff volume increased willreduce the volume of water storage in the soil. Second, Surface runoff velocity increased will causing water may dissolve some chemicals as it percolates through the ground, and flows directly into a river. And third, Changes in peak discharge time. The impact of this change is reduction in water flow during summer, this was due to lack of water reserves in the soil. Otherwise, surface runoff will increase in rainy season and cause flooding
- As I mentioned before, surface runoff velocity increased can affect the water quality of cikapundung area. For DO concentration, in last 9 years, only five times it didn’t meet quality standards.
- But for BOD and COD concentration, it didn’t fulfill quality standards almost in every section. And the most extreme condition occurred in 2011
- So, from this research, we can conclude that:land use of Bandung City changed