Mahzum, Mohamad Muchlisin (2015) Analisis Ketersediaan Sumber Daya Air Dan Upaya Konservasi Sub Das Brantas Hulu Wilayah Kota Batu. Masters thesis, Institut Technology Sepuluh Nopember.
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Abstract
Kota Batu menjadi bagian terpenting dari daerah aliran sungai (DAS)
Brantas di hulu Sungai Brantas. Peranan Kota Batu sangat vital karena merupakan
salah satu daerah tangkapan air hujan dan juga sebagai pengendali banjir di DAS
Brantas. Kondisi saat ini ditemukan bahwa jumlah sumber mata air di hulu sungai
Brantas sebelum 2005 berjumlah 421 sumber mata air, pada 2005 terdapat 221
sumber mata air dan pada 2009 hingga kini menyisahkan 57 sumber mata air. Hal
ini disebabkan berkurangnya hutan konservasi sebesar 1.316,43 ha (2013) dari
luas sebelumnya sebesar 4.120,37 ha (2006) menjadi permukiman penduduk.
Untuk mengatasi dan mengurangi kerusakan pada daerah hulu Sungai Brantas
perlu dilakukan upaya konservasi sumber daya air.
Penelitian ini diawali dengan pengambilan data curah hujan, data iklim,
peta DAS yang berada di Kota Batu, data penduduk Kota Batu, data tata guna
lahan serta data jenis tanah. Selanjutnya dilakukan analisis terhadap ketersediaan
dan kebutuhan air, evapotranspirasi, infiltrasi dan neraca air. Dari hasil analisis
diketahui terjadi defisit air pada musim kemarau tahun 2015, 2020, 2025, dan
2030 masing-masing sebesar 551.459,47m3, 731.067,03 m3, 957.059,41 m3, dan
1.415.28,7 m3. Oleh sebab itu perlu dilakukan upaya konservasi baik metode
vegetatif yaitu penyediaan lahan vegetasi dengan memanfaatkan tanaman
konservasi yang memiliki nilai ekonomi tinggi maupun menggunakan metode
mekanik kombinasi pemanen air hujan (rain water harvesting) dengan sumur
resapan.
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Batu city is located in the upper Brantas river which is very important of
Brantas River Basin. Batu city is vital as one of the rain catchment areas and flood
control. Current conditions found that the number of springs in the upper Brantas
River before in 2005 amounted 421 springs , in 2005 there were 221 springs and
in 2009 up to now amounted 57 springs. It is caused by the reduction of 1.316 ha
of forest conservation (2013) of the previous wide of 4.120,37 ha (2006) to
settlements. To prevent and reduce the upper Brantas River damage, conservation
of water resources is needed.
This research begins with data samplings of retrieval rainfall, climate, map
of river basin, population, land use and soil type then the supply and demand
water, evapotranspiration, infiltration dan water balance are analyzed based on
data samplings that have been taken. The analysis result shows that water deficit
happened during dry season in 2015, 2020, 2025 and 2030 are 551.459,47m3,
731.067,03 m3, 957.059,41 m3 and 1.415.28,7 m3. Therefore conservation needs to
do with vegetatif method or mechanic method. Vegetative method needs
vegetation land by using conservation plants that have high economy value, while
mechanic method can be implemented by rain water harvesting and wells
combination.
| Item Type: | Thesis (Masters) |
|---|---|
| Additional Information: | RTL 333.911 6 Mah a |
| Uncontrolled Keywords: | Kota Batu, Sungai Brantas, mata air, konservasi |
| Subjects: | T Technology > TD Environmental technology. Sanitary engineering > TD259.2 Drinking water. Water quality |
| Divisions: | Faculty of Civil Engineering and Planning > Environment Engineering > 25101-(S2) Master Thesis |
| Depositing User: | Mr. Tondo Indra Nyata |
| Date Deposited: | 27 Aug 2018 03:41 |
| Last Modified: | 27 Aug 2018 03:41 |
| URI: | http://repository.its.ac.id/id/eprint/59483 |
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