Sapon

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PROJECT


AMANDIT
BATANG ANGKOLA

BAJULMATI

BATANG BATAHAN
BATANG TONGAR

JABUNG

KARAU

LAKITAN

LANANG

LEMAH ABANG

LEUWI GOONG

LODAN

MUKO MUKO
OKAK

PANTI RAO

SAPON

SIMODONG

WAY CURUP

WAY RAREM

 

Jl. Sultan Hassanudin No. 45 Kebayoran Baru Jakarta Selatan

Ph : 62 251 72796081

e-mail : ptsl2@cbn.net.id


A.           A.      Project Description 

Item

Description

1. Name of Project

Sapon Irrigation Sub-Project

2. Location

(1)    General Layout is shown in Figure A-1.

(2)    Project Location and Administration

·          Province          : Yogjakarta Special Province

·          District            : Kulon Progo

·          Sub-district      : Srandakan

       30 km southwest of Yogjakarta City

3. Objective

(1)      To enhance rice production through water resources development

(2)      To increase the income of inhabitants in and around the project area

(3)      To raise the farmers living standard

(4)      To increase employment opportunity in the area

(5)      To contribute to the development of the rural socio-economic conditions

4. Type of Development

(1)     Construction of new diversion weir

(2)     Rehabilitation/improvement of main and secondary irrigation canal

(3)     Rehabilitation of irrigation related structures

5. Irrigation Development Area

(1)       Whole project area                 :    2,250 ha

(2)       Target area under PTSL-II      :    2,250 ha

6. Water Supply and Water Requirement

(1)     Water source: Progo River

(2)     Available water supply: as shown in Table A-1

(3)     Irrigation water requirement: Table A-2

(4)     Design unit water requirement: 2.05 l/sec/ha

 

 B.     Contribution of the Project to Water Resources/Irrigation Development 

Item

Description

1. Necessity of the project

Entering the 1990s the self-sufficiency of rice in Indonesia is facing a crisis.  Rice production is quite abnormal and irregular compared with the 1980s.  The average unit yield of rice stands stationary in the 1990s.  The expansion of irrigation area lost momentum in the 1990s, and the rice import resumed from 1994. Under such situation, the Government has adopted a policy of food security and sustenance of self-sufficiency in rice production.

The crop intensity of paddy fields in Indonesia is as low as 119% that indicates a possibility to expand the harvested area and thereby to increase the rice production through the irrigation development.  In 1999, there was about 2.1 million ha of rain-fed paddy fields and 1.17 million ha of upland paddy fields in Indonesia, for which the irrigated agriculture can be efficiently introduced without major problems such as transmigration, large-scale land development, social infrastructures, etc.

In order to promote the food security and sustenance of self-sufficiency in rice production, the government is keen to implement the irrigation development being effective for rice production, quick yielding and cost effective

The primary objective of PTSL-II is to enhance rice production through water resources development such as irrigation projects or pond/dam projects, contributing to the self-sufficiency of rice in Indonesia.

2. Beneficiary Area

Most of the project area is served with the irrigation facilities, but due to the damages of the existing intake facilities, and damages to main system as well, water shortage occurs therefore the basic development constraint is damages to irrigation facilities.

·            Irrigated paddy field (village irrigation): 1,195 ha

·            Rain-fed paddy field: 1,055 ha

With the project implementation, the principal benefit of the project is as follows:

·            Increase of cropping intensity from 167% to 250%

·            Increase of unit yield of crop by changing from rain-fed agricultural land to irrigated land

 

 C.     Project Area 

1. Water resources

The irrigation water for Sapon sub-project is taken from a new construction of intake weir in the Progo River, having a catchment area of 2,357 km2 at the weir site.

Joint walk through has revealed that heavy sedimentation is found along the canal therefore the existing mechanical sediment removal shall be changed with sediment removal with hydraulic flushing. 

The average discharge, the maximum, and the minimum (10 days basis) at the intake site are estimated to be 96.95 m3/sec, 244.1 m3/sec and 7.11 m3/sec, respectively. 

The river discharge is sufficient for the whole Sapon Irrigation Sub-project area of 2,250 ha with a cropping pattern of paddy-paddy (annual cropping intensity of 250%). 

2. Land use

The present land use is as shown below.

·            Irrigated paddy field (village irrigation): 1,195 ha

·            Rain-fed paddy field: 1,055 ha

Tertiary system for rain-fed paddy field of 1,055 ha is required. 

There is no need of land development because of all paddy fields in the sub-project area. 

Most of the middle and downstream areas have not received sufficient irrigation water because of damages on the main system therefore rehabilitation is required.

3. Institutional set-up

There are 37 WUAs across 16 villages. These were established and registered in the period of 1990 and 1994.

Five (5) WUAs are classified as “developed”, seventeen (17) WUAs are classified as “developing”, and the rest are classified as “underdeveloped”.

The implementation of Irrigation Management Reform Policy (PKPI) has not given the expected result therefore O&M of almost all of irrigation facilities are still under the responsibility of the government.

4. Environmental issues

·            The existing free intake weir and the existing canal system were constructed in the period of 1979 and 1984 by The Progo River Irrigation Project, therefore no significant problem on land acquisition occurs. 

·            The area in which the works are to be carried out is one that is already used for agriculture. The area is therefore one in which the flora and fauna has adapted to a managed agricultural system. 

·            There is no major negative environmental impact. 

 

 D.     Project Scope      

 

Item

Scope of Work

1.

Main Irrigation Canal System

 

 

(1) Construction of a new diversion weir

1 nos.

 

(2) Rehabilitation of main irrigation canal

3.880 km

 

(3) Rehabilitation  secondary irrigation canals

 

 

      Kangkeng secondary canal

7.030 km

 

      Pandowan secondary canal

3.904 km

 

      Banaran secondary canal

6.065 km

 

      Patuk secondary canal

0.663 km

 

      Ngremang secondary canal

3.600 km

 

      Pabrik secondary canal

2.812 km

 

      Wonokasih secondary canal

5.808 km

 

      Panjatan secondary canal

1.491 km

 

      Sibarek secondary canal

3.798 km

 

(4) Rehabilitation of irrigation canal related structures

 

 

      Off-take/division structure

66 nos.

 

      Measuring structure

11 nos.

 

      Culvert

58 nos.

 

      Bridge

67 nos.

 

      Aqueduct

12 nos.

 

      Cross drain

10 nos.

 

      Drop

13 nos.

 

      Foot bridge

- nos.

 

      Washing step

- nos.

2.

On-farm System

 

 

(1) Tertiary canal system

440 ha

 

1.             Comparison of the Project Scope

Item

unit

Original

Revised

Intake Weir

nos.

1

1

Irrigation Canal

 

 

 

Main Canal

km

3.88

3.88

Secondary Canal

km

35.17

35.17

Tertiary Canal

ha

-

440

 

 

2.         Increase of Construction Works

The project scope after design review is not changed substantially from the original. But the work volumes were increased from the following reasons:

(1)       Irrigation Canal Works

a.     Additional lining of main and secondary canal

The joint walk through was carried out with beneficiaries farmers, the project office staffs, and the Consultant to confirm the improvement requirements of the existing irrigation canals and their related structures. It revealed that the main and secondary canals in some parts are heavily damaged therefore additional canal lining were required.

b.    New tertiary canal construction at the tail end area

In the original project scope, no tertiary canal was included. At the tail end area, there is no tertiary canal. Farmers in this area strongly requested the construction of tertiary canals for 440 ha.

(2)       Intake Weir

a.     Necessity of the flood dyke in the upstream of the weir

The design flood discharge of the intake weir was reviewed and revised to 2,520 m3/sec (from 1,950 m3/sec) which necessitated the new flood protection dike in the upstream of the weir.

b.    Foundation piles due to weak foundation of the weir

The additional geological investigations revealed the soft foundation which requires pile foundation.

c.     Improvement of settling basin to enable hydraulic flushing of the sediments

The existing settling basin is facing the problems of removal of the sediments for which the sediment removal was planned by mechanical means. With provision of wear, the settling basin is improved with the introduction of a hydraulically automatic flushing system to save O&M cost.

d.    Provision of foot-path bridge over the weir

According to the villagers’ request made in the public consultation meeting, the foot-path bridge over the weir (width 2.00 m) is provided.

Although the project scope is approximately the same, the above mentioned conditions lead to the large increase of work volumes and construction cost.

 

E.     Implementation Schedule 

The implementation schedule of the project is presented as follows: 

 

(1)          The civil work of the main irrigation system and tertiary canal system will commence in February 2005 and be completed in July 2007 for a construction period of 30 months.

 

F.  Organization and Management Structure 

I.  Organization for Implementing the Project

Item

Description

1. Executing Agency

Directorate General of Water Resources, Ministry of Settlement and Regional Infrastructure

2. Implementation Management

Implementation of Sapon Irrigation Sub-project is managed by the sub-project manager of Kulon Progo.

3. Monitoring and Management

·            At the sub-project level, the sub-project manager will monitor and control physical and financial progress of the project work under the guidance of the Yogyakarta Irrigation Project and the Chief of Provincial Water Resources Services.

·            At the central level, Directorate of Water Resources in Central Region (DWRC) is responsible for monitoring the progress of the project.  DWRC will report the progress to Directorate of Technical Guidance (DTG).

·            DTG will compile the information together with other sub-projects information to prepare the progress report to JBIC. 

The organization and management structure of the project implementation is as per attached in Figure G-1. 

4. Payment Procedure and Monitoring of Financial Progress

·            Direct payment is applied to the civil work contractors. 

·            Any payment will be processed with the confirmation of the contents of invoices by the PTSL-II consultant.

The flow chart of payment and monitoring procedure for financial progress is as per attached in Figure G-2.

 

II. Organization of Operation and Maintenance

Appropriate operation and maintenance activities by Water Users’ Associations will be incorporated in O&M of the project through the formation and empowerment of the WUAs on the basis of the Government Regulation of Irrigation Turnover (PKPI).