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Jurnal Teknik Pengairan Jurusan Teknik Pengairan Fakultas Teknik, Universitas Brawijaya Jl. MT. Haryono 167 Malang
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Jurnal Teknik Pengairan: Journal of Water Resources Engineering
Published by Universitas Brawijaya
ISSN : 20861761     EISSN : 24776068     DOI : 10.21776
Core Subject : Engineering,
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Jurnal Teknik Pengairan is a scientific journal published regularly twice per year by Faculty of Engineering, Universitas Brawijaya. The paper submitted in this journal covers the fields of Water Resources Information System, Water Resources Conservation, Water Resources Utilization and Efficiency, Water Structure Engineering Planning and Water Resources Engineering Basic Knowledge. The submitted paper can be a summary of research reports or scientific literature review. The language used in this journal is either English or Indonesian.
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Search results for , issue " Vol 3, No 1 (2012)" : 1 Documents clear
STUDI PENILAIAN KONDISI DAS DAN IMPLIKASINYA TERHADAP FLUKTUASI DEBIT SUNGAI (STUDI KASUS PADA SUB DAS JANGKOK PULAU LOMBOK) Suhartanto, Ery; Priyantoro, Dwi; Itratip, Itratip
Jurnal Teknik Pengairan Vol 3, No 1 (2012)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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Abstract

In the last two decade, there has been a dramatically land use changes in the sub-catchment area of Jangkok, Lombok, from forest toward agroforestry. The results of study show that 17.32% of upper stream of Sub-Jangkok due to land use changes from 1995 to 2010 has not been degraded or still good quality catchment indicated by the following variables: coefifient C = 0.16 and potential soil erosion of 6.0 t ha-1 year-1. The C = 0.16 means that the was only 16 % of rainfall undergo run off and the rest of 84% goes to infiltration to enrich ground water. According to the natural erosion in the region which is about 5.75 t/ha/ year, the erosion index was 0.59 or less than 1 classified as low incident. Overall, the land use changes in upper stream of sub-catchment of Jangkok was not significantly correlated to the river-water recharge fluctuation. This was confirmed by the RRC (1.67) and MD (0.21 m3/sec) resulted from 1992-1996. In the next seven years (1997-2003) the RRC and MD were 2.47 and 0.35 m3/sec respectively. In 2004-2010, the RRC and MD were 2.0 and 0.25 m3/sec. However, there were slightly decline of river-water recharge (0.03 m3/sec/year) as well as rainfall (14.64 mm/year) and daily rainfall much as 10 days within the last 10 years.Keywords: land use changes, catchment, runoff, erosion, water recharge.

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