Rahayuningtyas, Christina (2014) Improving AVSWAT Streamflow Simulation by Cooperating Groundwater Recharge Prediction in Upstream Lesti Watershed, East Java, Indonesia. Magister thesis, Universitas Brawijaya.
Abstract
Watershed Lesti Hulu adalah salah satu daerah aliran sungai utama Jawa Timur dan mencakup sekitar 380,93 ha. Basin memiliki sumber daya air yang cukup untuk memenuhi permintaan saat ini tetapi banyak tantangan termasuk variabilitas spasial dan temporal yang tinggi dalam presipitasi selama satu tahun. Pemahaman yang baik tentang kondisi air sangat diperlukan untuk mengetahui efek pada aliran sungai Lesti di setiap sub cekungan. Penelitian ini menyelidiki kontribusi sumber daya air manajemen berkelanjutan di DAS di hulu di outlet. Metode fluktuasi tabel air dari 4 sumur digunakan di DAS LESTI Hulu untuk mengevaluasi variasi musiman dan tahunan dalam kenaikan permukaan air dan untuk memperkirakan prediksi air tanah (akuifer dalam). Hasil menunjukkan bahwa kenaikan permukaan air tahunan dengan kisaran 2800 mm - 5700 mm pada 2007. 3900 mm - 4700 mm pada 2008. 3200 mm - 5100 mm pada tahun 2009, dan 2800 mm - 4600 mm pada tahun 2010. Berdasarkan nilai standar hasil spesifik dan kenaikan tingkat air yang diukur, prediksi dari bobot di bawah tanah 39 outlet pada 2007 sebesar 736 mm. Pada 2008, sebesar 820,9 mm. Pada 2009 adalah sebesar 786,7 mm, dan terendah pada 2010 sama dengan 306,4 mm. Juga, koefisien korelasi memiliki rentang hubungan positif langsung 0,7 R 1 sedangkan DV (%) dalam penelitian ini nilai-nilai yang lebih kecil dari DV dipenuhi dengan kisaran 23,32% - 55,3% pada 2007 - 2010.
English Abstract
Upstream Lesti Watershed is one of major watershed of East Java of Indonesia and it covers about 380,93 Ha. basin has enough water resources to meet current demands but re are many challenges including high spatial and temporal variability in precipitation during one year. Good understanding of water condition is very necessary to know effect on streamflow of Lesti river in each sub basin. This study investigated contribution of sustainable management water resources in Upstream Lesti Watershed by prediction recharge of groundwater using water table fluctuation especially in dry season which can cooperating with performance of AVSWAT program (Arc View Soil Water Assesment Tool) model by comparing observed streamflows with simulated streamflows at outlet. water table fluctuation method from 4 well was used in Upstream Lesti Watershed to evaluate seasonal and annual variations in water level rise and to estimate groundwater prediction (deep aquifer). results show that annual water level rise with a range of 2800 mm - 5700 mm in 2007; 3900 mm - 4700 mm in 2008; 3200 mm – 5100 mm in 2009, and 2800 mm – 4600 mm in 2010. Based on standard values of specific yield and measured water level rise, prediction from area weighted that occur in sub basin 39 outlets in 2007 amounted to 736 mm; in 2008, amounted to 820,9 mm; in 2009 amounted to 786,7 mm, and lowest was in 2010 are equal to 306,4 mm. Also, correlation coefficient has a direct positive relationship range 0,7 R 1 in while Dv (%) in this study smaller values of Dv were satisfied with range of 23.32% - 55.3% in 2007 - 2010.
| Item Type: | Thesis (Magister) |
|---|---|
| Identification Number: | TES/910.285/RAH/i/041309287 |
| Subjects: | 900 History, geography and auxiliary disciplines > 910 Geography and travel > 910.2 Miscellany; world travel guides |
| Divisions: | S2/S3 > Magister Teknik Mesin, Fakultas Teknik |
| Depositing User: | Endro Setyobudi |
| Date Deposited: | 27 Feb 2014 18:05 |
| Last Modified: | 27 Feb 2014 18:05 |
| URI: | http://repository.ub.ac.id/id/eprint/160316 |
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