This report concerns the second and last part of the feasibility study carried out for the North-West Region Agricultural Development Project with a view to defining the measures to be taken to develop agriculture in the area. The first part dealt with rain-fed agriculture and was the subject of report ' No 31 0297 R14, published in June 1982. This second part concerns irrigated agriculture.
The soil survey in the North-West Region, which was begun in October 1980 and March 1981, covers an area of about 350,000 ha, in which the soil and land were mapped at a scale of 1/500,000.The survey was carried by SOGREAH consulting Engineers on behalf of the Democratic Republic of Somalia to study and prepare: -A soil classification Map -A land suitability map for integrated rainfed cultivation inorder to asses the area's suitability for agricultural development The aim of the study is to develop irrigated and rainfed agriculture in the North-west Region of the country The region of coverage extends between latitudes 9 and 11 30' North and longitudes 42 30' and 45 East and is characterised by a climate that is arid (coastal plain) to semiarid(plateau) and a rainfall regime which shows marked differences from one point to another (cf. report on hydrology and climatology), with mean annual precipitation ranging from 50 mm (coastal plain) t o 500 mm (plateau).
This note outlines the criteria which have been adopted in the preparation of designs for the Mogambo Irrigation Project. It has been based on the Design Statement issued in January 1982. Fully detailed supporting calculations are included In a separate volume.
(extract for introduction)br This Report analyses the studies made to date to identify requirements and costs for the proposed rice mill at Mogambo. It covers: br - the present and projected production of rice in southern Somaliabr - the present levels of imports of rice into Somaliabr - an assessment of the existing rice milling facilitiesbr - an assessment of the required capacity of a mill at Mogambo at completion on Phase IIbr - an assessment of the required capacity of storage, drying3 and ancillary equipment br - and an assessment of plant costs. br
(Extract from preface)The Hydrometry Project TCP/SOM/8906 was born after the visit to Somalia of the Hydrologist Jean C. Henry in 1979, to evaluate irrigation potential along the Juba and shebelli rivers. During this study the Hydrometric data base was questioned as regards both its validity and representativity. The first steps taken to rectify the situation was the formulation of the Hydrometry Project and its implementation in January 1980. The main objectives of the Hydrometry Project were to try and re-rate all the National Hydrometric stations on the Jubba and Shebelli rivers.
The purpose of this study was to draw up an inventory of groundwater resources in the foru main catchment areaas in the North-West region of Somalia and to define appropriate procedures for exploiting these resources. Each catchment covers an area between 3000 and 3800 Sq. KM
The main objectives of the Hydrometry Project were to try and re-rate all the National Hydrometric stations on the Jubba and Shebelli rivers to maintain a reliable and continous hydrological database to ensure reliable calculations and planning of development projects in aid of the future of agriculture in Somalia.The Project covers the area of Somalia dependant upon the Jubba and Shebelli rivers for its water. These two rivers drain the eastern slopes of the Ethiopian Plateau to the west of Somalia, and are the only sources of surface water which is available for large scale irrigation development in Somalia.
This is an investigation report of the soils of the Project area. Basic soil tests were performed from a base at the National Rangelands agency offices in Burao. Tests undertaken in the laboratory were:ol li Moisture content /li liAtterberg Limits /li liParticle size distribution (wet and dry sieve and hydrometer sedimentation). /li; li2.5kg rammer compaction test. /li; /ol Tests undertaken in the field were:ol liIn-situ densities by sand replacement/li li Water quality tests (pH, conductivity,hardness, alkalinity, chloride, sulphate, nitrate, ammonia and phosphorous). Some of these were done in the laboratory, others in the field/li; /ol
The main objectives of the Hydrometry Project were to try and re-rate all the National Hydrometric stations on the Jubba and Shebelli rivers to maintain a reliable and continous hydrological database to ensure reliable calculations and planning of development projects in aid of the future of agriculture in Somalia.The Project covers the area of Somalia dependant upon the Jubba and Shebelli rivers for its water. These two rivers drain the eastern slopes of the Ethiopian Plateau to the west of Somalia, and are the only sources of surface water which is available for large scale irrigation development in Somalia.
This report was requested after major flooding occurred in the Shabelle and Juba valleys in Somalia during April and May 1981.br The report covers: br Assessment of damage to agriculture arid infrastructure.br recommendations for indicate assistance to farmers affected by the floods.br Preliminary recommendations to reduce damage from future floods. br
(Extract from the Summary) The objective of the present study is to update the 1980 feasibility study in the light of the changed conditions in the Juba valley. In particular it is assumed that water regulation of the-river is achieved by Bardheere dam and that the farming system is to be based on smallholders rather than settlers. Particular emphasis is placed by the Terms of Reference on the following aspects: br - cropping pattern, particularly in view of the perennial supplies afforded by Bardheere dambr - farm budgets, including livestockbr - irrigation efficiencies, water management and water users' associations br; b Annexesbr Annex 1 Homboy Feasibility Studybr Annex I Smallholder Banana Development br Annex III: Assessment of Agricultural and Flood control Benefits br Album of drawings br
(Extract from Introduction) The project, as proposed in the 1980 study by YTS/MMP, comprised 8 850 ha net of irrigated land supplemented by 2 675 ha of rainfed land at full development. The rainfed areas were not considered suitable for surface irrigation due primarily to topographic limitations. The scheme was designed to form the basis of the resettlement of nomads temporarily located at Dujuuma with a holding size of 1 ha per family. Overall management of the project would be by the Settlement Development Agency (SDA).
(Extract from the Introduction)BR The present report describes the methods, findings and conclusions of the soil survey investigations, forming part of the Phase II studies which were carried out in the Homboy Irrigated Settlement Project Area. Chapter 1 gives an account of the general natural and human resources of the area and Chapter 2 describes the soils in more detail, drawing on information gained from the present survey and investigations. The principles and methods employed for arriving at the land suitability classification for the proposed development are described in Chapter 3, along with general guidelines as to suitability for rain fed agriculture. The findings, conclusions and recommendations of this study are presented in the andlsquoSummary and Conclusionsandrsquoat the beginning of the report.Br The Homboy Scheme is a large and complex development. In addition to extensive civil works the lives of more than 25,000 settlers presently residing at Dujuuma and over 8,000 local residents within the project area will be deeply affected. The physical planning necessary to ensure a smooth yet rapid development, while at the sane time, minimising hardship and unnecessary disturbance, has been studied in detail, and our proposals are presented in this volume. Parts 1, 2, 3 and 4 cover the important aspects of villagisation, the relocation of the settler-s and the infrastructure necessary to support both the domestic and scheme management requirements. A summary of costs is also included. The Annex describes the main construction works and again costs are included.