Arjo-Dedessa Irrigation Project Feasibility Study
Project Overview
The Arjo-Dedessa Irrigation Project is a major agricultural development initiative in Ethiopia's Oromiya National Regional State, covering parts of Illubabor, East Welega, and Jima zones. The project aims to develop irrigated agriculture using water from the Dedessa River to enhance food security and agricultural productivity.
Key Project Details
| Parameter | Value |
|---|---|
| Gross Command Area | 17,825 hectares |
| Net Command Area (Left Bank) | 7,450 hectares (55%) |
| Net Command Area (Right Bank) | 6,215 hectares (45%) |
| Reservoir Area | 8,500 hectares |
| Completion Date | May 2007 |
Agricultural Components
- Crop Production: Focus on cereals (maize, wheat, rice), pulses, oilseeds, vegetables, and coffee
- Livestock: Integration with crop production
- Fisheries: Development potential in reservoir areas
- Cropping Systems: Proposed intensive cropping patterns with 156% cropping intensity
Environmental Conditions
| Parameter | Range/Value |
|---|---|
| Temperature | 20°C (Dec) to 25.4°C (Mar) |
| Relative Humidity | 56.63% (Mar) to 88.63% (Sep) |
| Annual Rainfall | 1,452.9 mm |
| Soil Types | Predominantly Vertisols (clay to heavy clay) |
Key Findings
- The project area has significant agricultural potential with fertile soils and adequate water resources
- Current farming systems are subsistence-level with low productivity
- Major constraints include inadequate inputs, poor drainage, and limited extension services
- The project proposes integrated farming systems combining crops, livestock, and fisheries
- Water requirements have been calculated for proposed cropping patterns
Implementation Phases
The project is planned in multiple phases with progressive expansion of irrigated area and cropping intensity. Detailed crop water requirements and irrigation schedules have been developed for each phase.
Expected Benefits
- Significant increase in agricultural productivity
- Improved food and nutrition security
- Enhanced farmer incomes
- Development of rural infrastructure and services