POLA PERENCANAAN PEMBAGIAN AIR SECARA EFISIEN PADA JARINGAN IRIGASI SETUPATOK
Setupatok Reservoir is a surface water source used for irrigation activity. It is located in Sub-District Mundu, the Regency of Cirebon, the Province of Jawa Barat and covered 1.408 ha service area. Currently, it is failing to fulfill the irrigation water demand. Consequently, harvest failure often...
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Main Authors: | , |
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Format: | Theses and Dissertations NonPeerReviewed |
Published: |
[Yogyakarta] : Universitas Gadjah Mada
2013
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Subjects: | |
Online Access: | https://repository.ugm.ac.id/123362/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=63473 |
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Institution: | Universitas Gadjah Mada |
Summary: | Setupatok Reservoir is a surface water source used for irrigation activity.
It is located in Sub-District Mundu, the Regency of Cirebon, the Province of Jawa
Barat and covered 1.408 ha service area. Currently, it is failing to fulfill the
irrigation water demand. Consequently, harvest failure often occurs in various
locations during the Cultivation Season II. Therefore, a study on the optimization
of efficient water utilization of Setupatok reservoir for irrigation purposes is
required.
The optimum water utilization capability of Setupatok Reservoir can be
obtained by using the Linier Program for water utilization analysis, which is
combined with the operational simulation technique of reservoir water release
setting. The optimum capability of the reservoir water utilization was measured
based on the achievement of annual Cultivation Intensity by considering the ratio
of real release and targeted water demand (factor k) and the reliability of the
reservoir operation. The simulation of the reservoir operation was calculated
based on the water availability data in 10 years or between 2002 and 2011. It
included 12 scenarios with variations of the beginning of the cultivation pattern,
which was from November, December or January. The pattern used was the same
as the existing pattern: rice/cane-rice/cane-palawija/cane. The proposed
cultivation pattern was rice/cane-rice/palawija/cane-palawija/cane.
Water balance analysis at the existing condition for rice/cane�rice/cane�
palawija/cane pattern with Cultivation Intensity (IT) of 247% indicated that the
ratio of water availability and water demand was 0.72 within reservoir reliability
of 58.33%. This study showed that the best results would be achieved by the
proposed pattern, which was rice/cane�rice/palawija/cane�palawija/cane with
the beginning of cane cultivation in December and carried out in 2 (two) rotation
water supply. The IT value was 258% that resulted factor k and reservoir
reliability of 0.98 and 97.86%, respectively. |
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