Batang Angkola

Item	Description
1. Name of Project	Batang Angkola Irrigation Sub-Project
2. Location	(1) General Layout is shown in Figure A-1. (2) Project Location and Administration · Province : North Sumatra · District : South Tapanuli, and Mandailing Natal · Sub-district : Batang Angkola of South Tapanuli, and Siabu of Mandailing Natal 435 km southeast of Medan 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 main and secondary canals (2) New construction of irrigation and drainage systems Intake weir: already constructed
5. Irrigation Development Area	(1) Whole project area : 7,963 ha (2) Target area under PTSL-II : 7,416 ha The upstream area of 1,190 ha of the sub-project is presently irrigated, out of which the irrigation facilities for 547 ha is in good condition, and no improvement is required.
6. Water Supply and Water Requirement	(1) Water source: Batang Angkola River (2) Available water supply: as shown in Table A-1 (3) Irrigation water requirement: as shown in Table A-2 (4) Design unit water requirement: 1.51 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

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 Batang Angkola intake weir, main canal in its upstream, and left bank secondary canal (Ingul Jae secondary canal) in its upstream have been constructed and serving irrigation for the area of 1,190 ha. The irrigation facilities for 547 ha are in good condition, and then no improvement is required. The remaining irrigation facilities will be improved/constructed under PTSL-II.

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

· Increase of cropping intensity from 106% to 200%

· Increase of unit yield of crop by changing from rainfed agricultural land to irrigated land

C. Project Area

1. Water resources	The irrigation water for Batang Angkola sub-project is taken from the existing Batang Angkola intake weir in the Batang Angkola River, having a catchment area of 630.5 km²at the intake site. The average discharge, the maximum, and the minimum (10 days basis) at the intake site are estimated to be 28.2 m³/sec, 93.5 m³/sec and 6.0 m³/sec, respectively. The river discharge is sufficient for the whole Batang Angkola Irrigation Sub-project area of 7,963 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 (village irrigation): 1,190 ha · Rain-fed paddy field: 4,803 ha · Upland crop area: 642 ha · Mixed agriculture area: 467 ha · Coconut/palm tree area: 314 ha Total 7,416 ha Tertiary systems have been provided for 1,190 ha. New tertiary systems for rainfed area of 4,803 ha are required. Land development inclusive of tertiary systems for the area of 1,423 ha (upland of 642 ha, mixed agriculture area of 467 ha, and plantations of 314 ha) is required. The land development area of 1,423 ha in total is scattered and separated into small patches, and then the sizes of each location are less than 200 ha. According to the Government regulation, no EIA is required for such small lots of land.
3. Institutional set-up	There is no water users association established yet in the simple irrigation area.
4. Environmental issues	· The construction work for Batang Angkola diversion weir was completed in 1997 therefore the weir site does not require land acquisition. · The sub-project area is already a managed agricultural area, and there will be no significant change in landscape. The area is one in which the flora and fauna have adapted to a managed agricultural system. · There is no major negative environmental impact because there will be no major change on the existing landscape, no loss on historical, cultural and religious sites.

D. Project Scope

	Item	Scope of Work
1.	Main Irrigation Canal System
	(1) Rehabilitation of existing main canal	3.08 km
	(2) Rehabilitation of existing secondary canal	4.0 km
	(3) Construction of main irrigation canal	17.58 km
	(4) Construction secondary irrigation canals
	Siabu secondary canal	9.02 km
	Ingul Jae secondary canal	4.47 km
	Tanah Tiris secondary canal	9.30 km
	Parmonangan secondary canal	5.63 km
	Huta Pardomuan secondary canal	2.20 km
	Sibaruang secondary canal	10.31 km
	Hutaraja secondary canal	3.08 km
	Kapesong secondary canal	1.16 km
	Simangambat I secondary canal	1.13 km
	Simangambat II secondary canal	0.84 km
	Siabu Kecil secondary canal	0.92 km
	Bonandolok secondary canal	1.02 km
	Tangga Bosi secondary canal	2.31 km
	Sinonoan I secondary canal	4.13 km
	Sinonoan II secondary canal	3.21 km
	Sijunte secondary canal	2.40 km
	Sisoma secondary canal	3.34 km
	Lumban Ratus secondary canal	4.14 km
	Huraba secondary canal	3.30 km
	(5) Construction of irrigation canal related structures
	Off-take/division structure	68 nos.
	Measuring structure	3 nos.
	Irrigation Culvert	5 nos.
	Bridge	3 nos.
	Aqueduct	6 nos.
	Drain Culvert	39 nos.
	Drain Pipe	19 nos.
	Drop	89 nos.
	Foot bridge	7 nos.
2.	Drainage Canal System
	(1) Construction of main drainage canal	46.0 km
	(2) Construction of secondary drainage canals (32 canals)	109.59 km
	(3) Construction of drainage canal related structures
	Bridge	nos.
	Culvert	nos.
	Drain inlet	nos.
	Foot bridge	nos.
3.	On-farm System
	(1) Tertiary canal system	4,803 ha
	(2) Land development including tertiary canal system	1,423 ha

After review and finalization of the existing design, the following project works were increased from the original:

(1) Increase of Target Area

By reassessment of existing irrigation area and new development area, the target area is increased to 7,416 ha from 7,221 ha.

(2) New Requirement of Land Development of 1,423 ha

The land development is newly required.

(3) Increase of Drainage Canal Improvement

Along both banks of the Batang Angkola River, the ill-drainage condition prevails. To improve the ill-drainage condition, the drainage canal improvement is increased to 155 km from the original drainage improvement of 45 km.

E. Impleentation Schedule

The implementation schedule of the project is presented as follows:

(1) The civil work of the main irrigation and drainage systems will commence in December 2004 and be completed in November 2007 for a construction period of 36 months.

(2) The civil work of the tertiary system and land development will commence in March 2005 and be completed in February 2007 for a construction period of 24 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 Batang Angkola Irrigation Sub-project is managed by the sub-project manager of Batang Angkola Irrigation Sub-project/Bag-Pro Wilayah V, Proyek Irigasi Rawa Andalan Sumatra Utara.
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 North Sumatra Irrigation Project Manager 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.

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).

Air Sijorni