Aruna was hired by the Contractor for the rehabilitation of Route 51 highway to do an urgent hydrological assessment to determine if there was sufficient cross-drainage in the design of the road to allow average floods to pass without damage. Aruna performed a full hydrological analysis of the catchments to the road, a full geo-video survey and inventory of the road and associated drainage structures, an evaluation of the capacity of the drains and estimation of the likely flood flows, and a recommendation on where lack of drainage was critical and what structures should be improved to address the drainage requirements and how.

Aruna Technology Ltd. was contracted by the Asian Development Bank to perform an assessment of the amount of dry season land that was being actively cultivated via irrigation in the region of the Stung Pursat river. Under this project we acquired, geo-referenced and processed LandSAT7 satellite images and acquired various GIS data covering project area including elevation, land use, slope and soils.

Aruna Technology Ltd. prepared ortho-photographs covering the project area and outlined the important infrastructure, village areas, surface water features and agricultural areas. The Consultant then assessed the system in the field in cooperation with the staff of the local provincial Department of Water Resources and Meteorology (DOWRAM) and Department of Rural Development. The conclusions based on the field work were then discussed in a large meeting with the affected farmers to better understand the technical possibilities and to investigate alternative solutions. A report was produced by the Consultant outlining the various aspects of the project and including detailed recommendations on how to proceed.

Aruna Technology Ltd. prepared and delivered a training course on conducting feasibility studies of irrigation and drainage projects for GTZ and provincial staff emphasizing Participatory Rural Appraisal techniques and economic analysis. The trainees were then led by the Consultant to implement their new knowledge in the actual assessment of a large irrigation system in Kampot Province, culminating in their production of a report. The Consultant also assessed the system in greater detail including preparation of photomaps of the project area, assessment of the capacity of the local agencies, discussions with project beneficiaries and estimation of the likely costs and consequences of the project rehabilitation. A report was produced by the Consultant outlining the various aspects of the project and including detailed recommendations on how to proceed.

Aruna Technology Ltd. contracted with the FAO SPFS project to provide them with consulting services for the implementation of the pilot phase of their project. The project worked in several existing irrigation systems in different parts of Cambodia to pilot test a package of different inputs to try to increase farmers' production. The work undertaken by Aruna Technology Ltd. included assessment of the irrigation systems, identification of appropriate technologies for water control, working with local farmers to identify their requirements and constraints for operation and maintenance and creation and delivery of an intensive training programme in these areas at farmer field schools in the different provinces.

Aruna Technology Ltd. was contracted by the World Bank to provide a technical and social assessment of the irrigation rehabilitation and construction work funded by the Social Fund of the Kingdom of Cambodia (SFKC) from 1996 through 1999. The main purpose of the assessment was to improve the overall technical quality of these sub-projects and to increase beneficiary participation in their identification, selection and execution. The results will inform the implementation of irrigation sub-projects during the ongoing second phase of the SFKC.

Aruna Technology Ltd. was contracted as part of the reassessment of this large (~15,000 ha) irrigation system to provide spatial data for examination of the resettlement issues for the project. The goal of the consultancy was to identify which areas would be affected by flooding as a result of repairing the existing headworks. Accordingly Aruna Technology Ltd. prepared a large ortho-photomap of the area (230 km²) including digitization of the relevant features and production of GIS datasets. This included producing two digital elevation models (DEM) of the area, but these were not sufficient to accurately describe the flooding. Thus, an archived LandSAT MSS image from 1984 (when the headworks were not yet damaged) was acquired and processed to enable rough estimation of the flooded area extent in concert with the ortho-photo. An attempt was made to locate old benchmarks using differential Global Positioning System (dGPS) equipment in order to tie the data into the existing topographic maps, but this proved unsuccessful. The completed datasets were used as a basis for estimating the likely elevations of the critical structures. Each of the affected areas was documented and classified based on aerial photographic interpretation and the Consultant's knowledge of the area.