Water Resources Assess ment for Biguli Sub-County, Kamwenge District. FINAL REPORT VOLUME I WATER RESOURCES ASSESSMENT REPORT Prepared and Submitted By FELS CONSULTANTS LTD Plot 4 Kira Road Kamwokya April 2017 Vol. I – Water Resources Water Resources Assessment of Biguli Sub County in Kamwenge District Assessment Report Table of Contents EXECUTIVE SUMMARY .................................................................................................................................. 1 1.0 INTRODUCTION ................................................................................................................................. 4 1.1 Preamble ........................................................................................................................... 4 1.2 General Background ......................................................................................................... 4 1.3 Purpose of the Assignment: .............................................................................................. 5 1.4 Key Objectives: ................................................................................................................ 5 1.5 Government Policies ........................................................................................................ 5 2.0 PROJECT AREA ................................................................................................................................... 7 2.1 Location ............................................................................................................................ 7 2.2 Administrative Units ........................................................................................................ 8 3.0 LITERTARATURE REVIEW ................................................................................................................... 9 3.1 Socio-Economic situation of the study area ..................................................................... 9 3.1.1 Demographics ........................................................................................................... 9 3.1.2 Land use .................................................................................................................... 9 3.1.3 Economic activities ................................................................................................... 9 3.1.4 Settlement pattern .................................................................................................... 10 3.1.5 Occupation .............................................................................................................. 10 3.2 Characteristics of the Climate in the Study Area ............................................................ 10 3.3 Biophysical data of the study area .................................................................................. 12 3.3.1 Topography ............................................................................................................. 12 3.3.2 Geology ................................................................................................................... 12 3.3.3 Soils......................................................................................................................... 13 3.3.4 Vegetation ............................................................................................................... 13 3.4 Surface water status of the study area ............................................................................ 13 3.4.1 Drainage .................................................................................................................. 13 3.4.2 Annual Rainfall and Monthly Variations ................................................................ 14 3.4.3 Comparison of the Old data and Recent Satellite Data ........................................... 16 3.5 Groundwater Status of Kamwenge ................................................................................. 17 4.0 APPROACH, METHODOLOGY AND WORK DONE ............................................................................. 19 4.1 Approach and Methodology ........................................................................................... 19 4.2 Work Done ..................................................................................................................... 21 i | P a g e Vol. I – Water Resources Water Resources Assessment of Biguli Sub County in Kamwenge District Assessment Report 4.2.1 Environment and Social Consideration Survey ....................................................... 22 4.2.2 Groundwater surveys – siting of production boreholes ........................................... 22 4.2.3 Surface water surveys perennial streams and rivers visited. ................................... 22 5.0 RESULTS AND INTERPRETATION ........................................................................................................... 24 5.1 Socio-Economic Survey ................................................................................................. 24 5.1.1 Agriculture .............................................................................................................. 24 5.1.2 Commercial farming ............................................................................................... 24 5.1.3 Sanitation and hygiene ............................................................................................ 24 5.1.4 Sampled villages. .................................................................................................... 25 5.1.5 Readiness to receive water ...................................................................................... 26 5.1.6 Willingness to pay for the water and the Cost of water .......................................... 26 5.2 Surface Water Resources ................................................................................................ 27 5.2.1 Catchment Yield ..................................................................................................... 27 5.2.2 Catchment delineation ............................................................................................. 30 5.2.3 Exploitable surface water resources ........................................................................ 31 5.2.4 Development of Surface Water Resources .............................................................. 32 5.2.4 Key conclusions and recommendations on the surface water resources ................. 32 5.3 Groundwater resources ................................................................................................... 33 5.3.1 Identification of Potential Locations for drilling of production wells ..................... 33 5.3.2 Groundwater data .................................................................................................... 35 5.3.3 Spatial variation of First Water strike and Main water strike ................................. 36 5.3.4 Spatial variation of depth to bedrock and airlift yield ............................................. 37 5.3.5 Hydro-Geostatistical Analysis ................................................................................. 38 5.3.6 Assessing the Water Quantity (Test Pumping) ....................................................... 39 5.3.7 Groundwater Quality ............................................................................................... 40 5.3.8 The groundwater resources of the study area .......................................................... 43 5.3.4 Key conclusions and recommendations on the groundwater resources .................. 45 5.4 Total Available Water Resources ................................................................................... 46 6.0 CHALLENGES .................................................................................................................................... 47 6.1 Project Duration.............................................................................................................. 47 6.2 Existing Data .................................................................................................................. 47 7.0 CONCLUSION ................................................................................................................................... 48 7.1 Literature Review ........................................................................................................... 48 7.2 Socio-Economic Survey ................................................................................................. 48 i | P a g e Vol. I – Water Resources Water Resources Assessment of Biguli Sub County in Kamwenge District Assessment Report 7.3 Hydrogeological Survey ................................................................................................. 48 7.4 Surface Water Survey ..................................................................................................... 49 List of Tables Table 2.1.: Administrative units in Kamwenge District ..................................................... 8 Table 2.2.: Administrative units in Biguli Sub-County ...................................................... 8 Table 3.1.: The project Sub-County demographics. ......................................................... 9 Table 3.2.: Hydro-climatic variation in the study area .................................................... 11 Table 3.3.: Location of the old rainfall stations in the vicinity of the study area .............. 14 Table 3.4.: Mean annual precipitation