This document summarizes a presentation on a hydrological analysis of the Kavre Valley Integrated Water Supply Project in Nepal. The analysis assessed water supply and demand in the project area. Key findings include:
- Existing water systems are insufficient to meet population needs, but tapping 5 sources in the Roshi River can provide 108 lps of supply to meet the projected 2024 demand of 106.43 lps.
- Supply is sufficient to meet demand through 2024 with a small surplus, but industrial/institutional demand was not included in projections.
- Integration of new and existing local water systems is recommended to efficiently manage water resources and meet increasing demands.
Hydrological Analysis Based of Supply and Demand of Kavre Valley Integrated Water Supply Project
1. Dept. of Environmental Science & Engineering,
Kathmandu University
Hydrological Analysis focused on Water Supply & Demand
of Kavre Valley Integrated Water Supply Project
Presented By:
Situ Sainju (M.Sc. ENR)
9 Nov 2017
Supervised By:
Dr. Nawaraj Khatiwada, Associate Professor, KU
Dr. Daniel Nover, Assistant Professor, UC Merced
Dr. Madhav Narayan Shrestha, Senior Faculty, AITM
3. KATHMANDUUNIVERSITY
www.ku.edu.np
Dept.ofEnvironmentalScienceandEngineering,SchoolofScience
3
Introduction
Drinking water, sanitation, road facility, air quality etc are
the basic services of environment.
Water remains to be the key resource system for the
economic development in Nepal.
Integrated water resources management - helps to manage
and develop water resources in a sustainable and balanced
way, taking account of social, economic and environmental
interests.
Kavre Valley Integrated Water Supply Project (KVIWSP)
with an objective to improve water supply system in the three
cities Banepa, Panauti and Dhulikhel Municipalities.
4. KATHMANDUUNIVERSITY
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Dept.ofEnvironmentalScienceandEngineering,SchoolofScience
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Introduction
Existing water supply systems which are neither regular nor
sufficient enough for the entire urban population.
Extract water from Roshi Khola and its tributaries
Municipalities will be provided with regular and adequate
water supply systems.
The quality and quantity of water resources are diminishing.
The integrated approach co-ordinates water resources
management across sectors and interest groups, and at
different scales, from local to international.
5. KATHMANDUUNIVERSITY
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Dept.ofEnvironmentalScienceandEngineering,SchoolofScience
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Literature Review
Present Condition of Drinking Water in Nepal
The population of urban areas are growing rapidly every year
and new municipalities and metropolis are rising up. With
these developments, population as well as demand of water
increase rapidly due to various application of water. But the
pace of water supply projects does not match that of the
demand due to which problem related to water supply remain
largely unsolved.
Integrated Approach on Water Management
The researchers on water management assume that the future of
water is directly influenced by the choices made collectively by
the global population. In particular those choices affecting income
and population growth, investments in water infrastructure,
allocation of water to various uses, and reforms in water
management.
6. KATHMANDUUNIVERSITY
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Dept.ofEnvironmentalScienceandEngineering,SchoolofScience
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Rationale for the study
The water available at the source is limited.
The yield of the sources are not sufficient to meet the water
demand.
Concerns were raised on the impact of diversion of water from
the Roshi Khola and its tributaries to the downstream water
uses.
Urbanization and life style are creating pressure on water
sources.
Imbalance between water supply and demand
7. KATHMANDUUNIVERSITY
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Dept.ofEnvironmentalScienceandEngineering,SchoolofScience
7
Objectives
General objectives
To assess the water resource planning and management for
Kavre Valley Integrated Water Supply Project
Specific objective
To analyze the hydrology focused on water supply & demand
for Kavre Valley Integrated Water Supply Project.
To examine the sufficiency of water sources to meet the
demand and impact on KVIWSP due to increased demand.
To quantify the difference between supply and demand for dry
and wet season.
13. KATHMANDUUNIVERSITY
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Dept.ofEnvironmentalScienceandEngineering,SchoolofScience
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Roshi Khola - Perennial River - Originates Mahabharat Range at
Kalati Bhumidanda VDC
Confluences with Sunkoshi - Tributary of Koshi Basin
Rich in natural resources like water sources, stone queries, forest
and agricultural land.
Kalati Bhumidanda VDC-
• (27°33’ N 85º27’E to 27.55°N 85.45°E)
• Around 1800 m above mean sea level in the down reach of Roshi
Khola
Study Area
25. KATHMANDUUNIVERSITY
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Dept.ofEnvironmentalScienceandEngineering,SchoolofScience
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Conclusion
S.N. Objectives Conclusion
1. To analyze the hydrology focused on
water supply & demand for Kavre
Valley Integrated Water Supply
Project.
The discharge available from 5 different
sources of Roshi River is sufficient to
meet the demand of Kavre Valley for 24
hours supply till 2013. Hence existing
water supply systems should be
integrated with new system.
2. To examine the sufficiency of water
sources to meet the demand and
impact on KVIWSP due to
increased demand.
Integration of new system and existing
system is sufficient to meet the demand
of Kavre Valley for the design year
2024.
3. To quantify the difference between
supply and demand for dry and wet
season.
The discharge from the sources of dry
period are measured and they are
sufficient to meet the demand to till
2024 with the surplus supply of 1.61 lps
28. KATHMANDUUNIVERSITY
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Dept.ofEnvironmentalScienceandEngineering,SchoolofScience
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References
Design Review Report of Kavre Valley Integrated Water Supply Project (2007)
Gurmu, A. T.; Tolessa G. A. (2014), Surface Water Modeling Using SCS-CN
Model – Hydroinformatic Approach, European Academic Research Vol. II, Issue
8/November 2014
Khatiwada, N. R.; Bista, K. R.; Kshetri, M. B., Kshetri; Rokka, Minakshi; Basyal I;
Assessing the implications of climate change risks in a community water supply
project
Neupane, K. R.; Dahal, N.; Devkota, K.; Joshi, T.; Sustainability of a negotiated
agreement with upstream community for water: Case from Dhulikhel, Nepal,
South Asia Institute of Advance Studies
Shrestha, M. N. (2004), Integrated Modeling on Water Resources Management,
Annual Journal of SOPHEN, Vol.1, 2004 No.1, pp. 26-30.
Shrestha, M.N. (2004), Integrated Approach on Water Management,
International conference on Security and Sustainability in Water Resources
(SEEP), Kathmandu, Nepal 2004.
Updated Environmental Management Plan Report of Kavre Valley Integrated
Water Supply Project (2014)
Variation Order 1 Report of Kavre Valley Integrated Water Supply Project, 2015
World Water Assessment Programme (2001), Water Security: A Preliminary
Assessment of Policy Progress since Rio.
Water Resource Planning and Management of Kavre Valley Integrated Water Supply Project
Some parts of all three municipalities (Banepa, Panauti and Dhulikhel) were not covered by KVIWSP system in the original contract document.
Based on strong and justifiable demands from stakeholders, it is found that several new system and additional service areas in already designed system has been included in the present system under implementation.
To plan and execute target oriented data collection (or model simulations if applicable) independently, and critically evaluate the results,
To demonstrate critical consideration of and reflection on theories, models or interpretations related to their thesis research,
To present the research to the peers, both in written and oral form, and
To analyze the hydrology and supply & demand of water for Kavre Valley Integrated Water Supply Project.which aims to contribute to the improved understanding of catchment-scale hydrological processes through measurement, modelling and assimilation techniques.
Empirical data generated from application of selective scientific participatory research tools complemented by secondary data and related information acquired from the key players would yield results in various levels.
The main expected result from the thesis is as below: