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Tender description :
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Expression of Interest: Groundwater Modelling Expert
nepal Has Abundant Renewable Water Resources. the Annual Rainfall Varies From 500 Mm/year in Some Western Areas to More Than 4,000 Mm/year on the Southern Slopes of the Himalayan Range, with 70-80% Occurring in the Summer Monsoon and Generating Runoff to More Than 6,000 Watercourses. High Rainfall Generally Gives Rise to Abundant Water Supplies, at Least Seasonally, and Surface Water and Groundwater Are Important Sources for Domestic, Industrial, and Agricultural Uses. Groundwater is Abundant in the Terai and the Kathmandu Valley Aquifers, While Groundwater is More Limited in Populated Hill Regions. in Intra-mountain Valleys Such as Kathmandu, Groundwater Occurs in Well-defined and Sometimes Isolated Basins. in Contrast, Groundwater in the Terai Plains South of the Himalayan Mountain Ranges Forms a Part of the Larger System Operating in Theindo-gangetic Plains. Extensive Groundwater Development for Irrigation in the Terai Started in the 1960s, and Today, Groundwater Serves Most of the Areas Population for Drinking and Irrigation Purposes. Groundwater Development Was Low-cost and Initially Did Not Lead to Conflicts. Consequently, Abstraction Increased Without Any Specific Plan Or Resource Management, Gradually Leading to Stress on the Resource. Today, Almost Half of Nepal’s Population Lives in the Terai and Depends Solely on Groundwater for Their Drinking Needs. There Are Growing Challenges Facing Groundwater Security in the Region, Including Issues Around Year-round Reliability, Increasing Instances of Water Insecurity, and Growing Concerns Over Its Quality. Data Available on the Quality of Deep Ground-waters in the Terai, Show the Presence of Arsenic as a Major Health Contaminant Apart From the Prevalence of Iron, Manganese, and Ammonium. Given the Strategic Value of Groundwater in the Terai and the Significant Risks Associated with Its Contamination and Growing Water Stress, This Study Aims to Support the Ministry of Water Supply, and Other Relevant Stakeholders in Assessing Groundwater Potential, the Risks Due to Contamination, and to Identify Possible Short- and Medium-term Solutions.
the Scope of the Work Shall Include But Not Limited To: • Review Existing Reports and Documents, Including Data on Drinking Water Availability and Contamination (specifically on Arsenic Concentrations, Fecal Coliform, Etc) Available with Different Agencies and Preparation of Preliminary Report. • Mapping of the Spatial Distribution of Tube Wells, Tube Well Discharge, and Water Quality Characteristics, Specifically Emphasizing Arsenic Concentration, Fecal Coliform, Etc and Groundwater Estimation. • Draw Up a Sampling Plan and Field Testing Program for Existing Wells Ensuring Representativeness at the Ground Level and Validate the Field Test Results. Review of Existing Arsenic Removal Practices. • Ground Water Sampling and Water Quality Tests in Government Accredited Laboratories. Validation of Water Quantity and Quality Status in Priority Areas / Hot-spots, Specifically for Cluster of Villages and Towns. • Hydro-geological Investigations and Pump Out Tests in Diverse Geological Settings and Prepare Sub- Surface Lithology and Water Quality Tests and Monitoring of Ground Water. • Development of a (pilot) Simulated Groundwater Numerical Flow and Transport Model, Based on Available Data. • Development of Ground Water Management Plan (gwmp) for Priority Areas, Emphasizing on Water Stress, Ground Water Availability and Quality. • Recommend Mitigation Measures for Arsenic and Other Contaminants Including a Program of Measures for the Utilization and Protection of Groundwater Resources, with Specific Recommendations for Managing Arsenic Contamination (short, Mid, and Long-term). • Prepare An Investment Plan for the Medium to Long Run, Including the Sustainable Development, Management, and Restoration/protection of the Water Sources, Based on the Local Authoritys Plans, and in Line with the National Sector Development Plans. • Undertake Consultation and Knowledge Sharing Discussion with Department of Water and Sewerage Management (dwssm), Ministry of Water Supply and Other Stakeholders.
consulting Services Budget:consulting Services Budget
usd
30,000
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