Application of Tank Model for Predicting Water Balance and Flow Discharge Components of Cisadane Upper Catchment

  • Nana Mulyana Arifjaya
  • Cecep Kusmana
  • Kamarudin Abdulah
  • Lilik Budi Prasetyo
  • Budi Indra Setiawan

Abstract

The concept of hydrological tank model was well described into four compartments (tanks). The first tank (tank A) comprised of one vertical (qA0) and two lateral (qA1 and qA2) water flow components and tank B comprised of one vertical (qB0) and one lateral (qB1) water flow components. Tank C comprised of one vertical (qC0) and one lateral (qC1) water flow components, whereas tank D comprised of one lateral water flow component (qD1).  These vertical water flows would also contribute to the depletion of water flow in the related tanks but would replenish tanks in the deeper layers. It was assumed that at all lateral water flow components would finally accumulate in one stream, summing-up of the lateral water flow, much or less, should be equal to the water discharge (Qo
) at specified time concerns. Tank A received precipitation (R) and evapo-transpiration (ET) which was its gradient
of (R-ET) over time would become the driving force for the changes of water stored in the soil profiles and those
water flows leaving the soil layer.  Thus tank model could describe th vertical and horizontal water flow within
the watershed. The research site was Cisadane Upper Catchment, located at Pasir Buncir Village of Caringin
Sub-District within the Regency of Bogor in West Java Province.  The elevations ranged 512 –2,235 m above sea
level, with a total drainage area of 1,811.5 ha and total length of main stream of 14,340.7 m.  The land cover was
dominated by  forest  with a total of 1,044.6 ha (57.67%),  upland agriculture with a total of 477.96 ha (26.38%),
mixed garden with a total of 92.85 ha(5.13%) and semitechnical irigated rice field with a total of 196.09 ha (10,8%).  The soil was classified as hydraquent (96.6%) and distropept (3.4%).  Based on the calibration of tank model application in the study area, the resulting coefficient of determination (R2) was 0.72 with model efficiency (NSE)of= 0.75, thus tank model could well illustrate the water flow distribution of Cisadane Upper Catchment. The total water yield was 2.789 mm year-1 from 3,624 mm year-1 of total annual precipitation.  The total water yield comprised of a total runoff of 47.39% and  49.23%  of sub surface flow and base flow.

Keywords: tank model, Cisadane upper catchment, base flow, watershed

Author Biographies

Nana Mulyana Arifjaya
Department of Forest Management, Faculty of Forestry, Bogor Agricultural University, Bogor 16680
Cecep Kusmana
Department of Silviculture, Faculty of Forestry, Bogor Agricultural University, Bogor 16680
Kamarudin Abdulah
Department of Agricultural Engineering, Faculty of Agricultural Technology, Bogor Agricultural University, Bogor 16680
Lilik Budi Prasetyo
Department of Conservation Natural Resources and Ecotourism, Faculty of Forestry, Bogor Agricultural University,
Bogor 16680
Budi Indra Setiawan
Department of Civil and Environmental Engineering, Faculty of Agricultural Technology, Bogor Agricultural University,
Bogor 16680
How to Cite
Arifjaya, N. M., Kusmana, C., Abdulah, K., Prasetyo, L. B., & Setiawan, B. I. (1). Application of Tank Model for Predicting Water Balance and Flow Discharge Components of Cisadane Upper Catchment. Jurnal Manajemen Hutan Tropika, 17(2), 63-70. Retrieved from http://journal.ipb.ac.id/index.php/jmht/article/view/3976
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