Item

Description

1. Name of Project

Panti Rao Irrigation Sub-Project

2. Location

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

(2)      Project Location and Administration

·            Province         : West Sumatra

·            District           : Pasaman

·            Sub-district     : Panti, and Rao Mapattunggul

             270 km north of Padang 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)     Rehabilitation of existing secondary canal

(2)     New construction of irrigation and drainage systems

(Intake weir and part of main and secondary canals: already constructed)

5. Irrigation Development Area

(1)       Whole project area                 :    8,150 ha

(2)       Target area under PTSL-II      :    7,000 ha

The area 1,150 ha is the existing irrigation area, which is the upstream part of this irrigation project, and is provided with tertiary system.

6. Water Supply and Water Requirement

(1)          Water source: Sumpur River

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

(3)          Irrigation water requirement: as shown in Table A-2

(4)          Design unit water requirement: 1.67 l/sec/ha

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

The socio-economic condition of the people in the project area is at the subsistence level due to the limited income from agricultural activities.  The basic development constraint is the lack of irrigation water. 

The intake weir has been completed in 1991 and the main canal and Tambangan (right) secondary canal in some reaches have been completed.  Irrigation for those canal commands of 1,150 ha is been made, which is out of the scope of Panti Rao Sub-project.  The remaining irrigation facilities will be constructed under PTSL-II.  

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

·            Increase of cropping intensity from 152% to 200%

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

1. Water resources

The irrigation water is taken from the Sumpur river at the existing intake weir, having a catchment area of 297.2 km² at the intake weir site. 

The average discharge, the maximum, and the minimum (10 days basis) at the intake weir site are estimated to be 22.6 m³/sec, 74.8 m³/sec and 3.4 m³/sec, respectively. 

The existing Sumpur intake weir has been constructed without a settling basin, but there is no problem of entrance of sediment materials at the present time. 

The river discharge is sufficient for the whole Panti Rao Irrigation Sub-project area of 8,150 ha with a cropping pattern of paddy-paddy (annual cropping intensity of 200 %). 

2. Land use

The present land use is as shown below.

·            Irrigated paddy field:        0 ha

·            Rain-fed paddy field: 6,860 ha (including aquaculture fields)

·            Mixed vegetation area: 140 ha

Tertiary system for rainfed paddy fields 6,860 ha and mixed vegetation areas 140 ha is required.

Mixed vegetation areas are located at the tail end of secondary canals.  Light clearing/land development is required, and will be carried out by beneficiaries. 

There are aquaculture activities to a small extent by use of the natural streams water coming down from the western part of the sub-project area.  Water supply to the fishponds is required.

3. Institutional setting-up

There is no water users association in Panti Rao sub-project area because most of the sub-project area is in the rainfed condition.

The water management including O&M of Sumpur intake weir need to be carried out as the whole Panti Rao project area, therefore sufficient coordination is required between the upstream existing irrigation area and the target area under PTSL-II. 

4. Environmental issues

Since the sub-project area has already been largely developed for agricultural use, no specific countermeasures for loss of undisturbed natural habitat will be required.     

There has been an issue of the possible damage or loss of religious and historical heritage (ancient temple) which is located on the original alignment of the secondary canal.  However, the canal alignment has been changed, and the issue has been solved. 

The existing Sumpur Main Canal and its inspection road, being outside the target area of PTSL-II, have been constructed in the Rimbo Panti National Park with the compensation of tree cutting to the Forest Department.  The renewal of permission of use of national part land is required every 5 years.

There is no major environmental negative impact in the sub-project area. 

Item

Scope of Work

1.

Main Irrigation Canal System

(1) Rehabilitation of existing secondary canal

8.00 km

(2) Construction of main irrigation canal

19.22 km

(3) Construction secondary irrigation canals

      Tambangan secondary canal

21.28 km

      Pegangbaru secondary canal

1.92 km

      Pegang secondary canal

2.75 km

      Ping Ping secondary canal

2.27 km

      Makmur secondary canal

- km

      Sontang secondary canal

2.05 km

      Sumur secondary canal

2.71 km

      Rambahan secondary canal

2.24 km

      Beringin secondary canal

2.70 km

      Tanjung Pao secondary canal

1.48 km

      Tingkarang secondary canal

1.59 km

      Petani secondary canal

1.41 km

(4) Construction of irrigation canal related structures

      Off-take/diversion structure

57 nos.

      Measuring structure

3 nos.

      Culvert

6 nos.

      Bridge

16 nos.

      Aqueduct

6 nos.

      Siphon

7 nos.

      Cross drain

61 nos.

      Drop

85 nos.

      Tunnel (1 location)

584.5 m

2.

Drainage Canal System

(1) Construction of secondary drainage canals (15 canals)

41.0 km

(2) Construction of drainage canal related structures

      Bridge

14 nos.

      Culvert

2 nos.

      Drain inlet

135 nos.

      Drop structure

161 nos.

3.

On-farm System

(1) Tertiary canal system

7,000 ha

Item

Description

1. Executing Agency

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

2. Implementation Management

Implementation of Panti Rao Irrigation Sub-project is managed by the sub-project manager of Panti Rao Sub-project.

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 West Sumatra Irrigation Project and the Chief of Provincial Water Resources Services.

·           At the central level, Directorate of Water Resources in Western Region (DWRW) is responsible for monitoring the progress of the project.  DWRW 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.