improving water security in water stressed bagmati river basin, nepal
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presented by Ram Kumar Shrestha and Rabindra Ray in Asia Water Week 2013, Manila 11-13 March 2013TRANSCRIPT
Improving Water Security in Water Improving Water Security in Water p o g ate Secu ty atep o g ate Secu ty ateStressed Stressed BagmatiBagmati River Basin,River Basin,
Ram Kumar Shrestha & Rabindra RayRam Kumar Shrestha & Rabindra RayNepalNepal
y(Engineer)
Government of NepalMinistry of Urban Development
y(Engineer)
Government of NepalMinistry of Urban Development
High Powered Committee for Intregated Development of Bagmati Civilization (HPCIDBC)
High Powered Committee for Intregated Development of Bagmati Civilization (HPCIDBC)
www.bagmati.gov.np
I t d ti
ContentsContents
Introduction
Bagmati Action Plang
Status of Activities
Future Plan
Th f d The way forward
Conclusion
Nepal
rPar
t
Bagmati River
Upp
er
Bagmati River Basin in Nepal
ddle
par
tM
idw
erPa
rtTotal Catchment area : 3750 sq. km.
T l l h f h i i
LowTotal length of the river in
Nepal : 220km
Bagmati River in Kathmandu Valley
A few length of Bagmati River in KV
6
Water Use – Drinking,
Key Areas on Water Security in Bagmati River Basin
Water Resource Development and
Management
g,Irrigation and others
Water Resource – surface & Ground water
Upper BagmatiRiver Basin
Management & Ground waterWater QualityFlood ControlRiver Basin
River Area Management
Riverfront environmentSolid wastesquatter and encroachment of the riverillegal sand mines
Water Resource Development & Irrigation
Middle and Lower Bagmati
Development & Management
Irrigation
Flood Control
River Basin Water Disaster Mitigation Debris flow
Watershed conservation
Importance of Bagmati River
B ti Ri d itBagmati River and itswatershed is veryimportant for Nepal,Strategically religiously
Pashupatinath
Strategically, religiously,culturally, economically,socially andenvironmentally.environmentally.
Kathmandu, the capitalcity, situated on theybanks of Bagmati.
The length of BagmatiDhap Sunarighat
within Kathmandu Valleyis 45 km.
People bathing at Guheswori Gaurighat
Issues/Problems of Bagmati in Kathmandu
Decrease in river flow Disposal of untreated waste water
Encroachments of river regimewater regime
Solid waste dumping on river bank
sand extraction Haphazard urbanization and rapid populationbank and rapid population growth
Discharge of Bagmati RiverDischarge of Bagmati River Discharge of Bagmati River
28.7634.75
25
30
35
ecs
• High difference in dry and wet
12.5315.42
18.77
10
15
20
25
scha
rge
Cum
edry and wet weather flow
1.98 3.44 3.22
0
5
10
Dis
ti l i t
• Water shortage in
GokarnaJorpati
Tilganga
Shankhamul
Babarmahal
Thapathali
Sundarighat
Khokama
Location
shortage in dry season
Dry Season Discharge m3/s Monsoon Discharge m3/s
Variation of BOD along Bagmati RiverVariation of BOD along Bagmati River600
400
500
300
400
OD
(mg/
L)
100
200BO
Sundarijal Gokarna Jorpati Guheshwori Tilganga Minbhawan Sankhamul Thapathali Teku Dovan Sundarighat0
100
Dec. 3 8 18 13 130 320 220 430 250Jan. 2 17 44 26 220 320 178 256 350 280Feb. 3 14 46 15 147 310 190 335 410 370Mar. 7 8 49 12 198 277 234 247 460 352
Water Quality of the Bagmati and its TributariesWater Quality of the Bagmati and its Tributaries
B ti A ti PlBagmati Action Plan
Bagmati Action Plan has been Bagmati Action Plan has been developed by HPCIDBC & NTNC with the financial support of UNEP and UNHABITATand UNHABITAT.
Bagmati Action Plan was approved by the Government of Nepal in August 2009.
It envisages HPCIDBC as the lead implementing agency for river
t i t i tsystem environment improvement in Kathmandu.
Zoning of the Kathmandu ValleyBagmati Action Plan …….
Zoning of the Kathmandu Valley
Natural Conservation
Rural
Zone 1
Zone 2 Rural
Peri Urban
Urban
Zone 2
Zone 3
Zone 4 Urban
Down Stream
Zone 4
Zone 5
VisionBagmati Action Plan …….
Vision
Clean, green and healthy river system in Kathmandu valley; that is full of life and valued by all.
Mandate/Resonsibility to HPCIDBC Policy formulation and Planning for restoration of River
t i th it l it K th d V ll
Mandate/Resonsibility to HPCIDBC
system in the capital city, Kathmandu Valley Construction of infrastructure to protect and restore the
Bagmati River SystemBagmati River System• Construction of sewer system • Construction of waste water treatment plant• Construction of access road and green belt
Defining the river alignment and width of flow regime Monitor and regulate the activities along the river side
area
Financial StatusFinancial Status
60 54
40
50
60
41
5446
40
29
20
3029
4 5 5 5 5
0
10
Year 1 Year 2 Year 3 Year 4 Year 5
3.8 4 4.5 5 5.5
Required BudgetMUSD
Expected AllocationMUSD
Activities Carried out by HPCIDBC
Activities Carried out by HPCIDBC …………..
Conservation of water recharge areas, Dhap (origin of Bagmati)
Beforre
Noww
Construction of sewer lines, green belts, access roads along the Activities Carried out by HPCIDBC
…………..Construction of sewer lines, green belts, access roads along the river, river demarcation and bank protection work
O ti f W t W t T t t Pl t t G h i
Activities Carried out by HPCIDBC …………..
Operation of Waste Water Treatment Plant at Guheswori
Capacity: 16.3 MLDp y
Guheswori to Tilganga Tunnel length : 572 m Dia: 2m
Drying Bed
Monthly average COD of influent and effluent of
1600
Monthly average COD of influent and effluent of the Waste Water Treatment Plant, HPCIDBC
1200
1400
1600
Influent
Effluent
800
1000
CO
D m
g/l
400
600
C
0
200
Apr-12 May-12 Jun-12 Jul-12 Aug-12 Sep-12
Bagmati River Bank Protection work/River trainingActivities Carried out by HPCIDBC …………..
Bagmati River Bank Protection work/River training
Now Before
Towards a Bagmati River Basin Road Map
Where we are? Where do we get there? Where do we want to go?
Water resource Develop & implement a Socially, environmentally development dangerously
unsustainable in the upper Watershed
p psustainable Water resource Mgt. system for deep GW use
y, y& economically sustainable WS & WWTP in the valley
Lane 1
River environment management almost out of
control
Develop and implement comprehensive River
Environment Mgt. system (Bagmati Action Plan)
Clean, green & healthy river system that if fulof life & valued by allLane 2
control
Rapid and unsustainable urban
(Bagmati Action Plan)
Sustainable Water Resource development
Infrastructure in the lower basin and disaster Lane 3 development in
lower basin
Limited capacity and f
& Irrigation Water use Management
support a step wise
mgt. creating opportunities outside KV
Multi-stakeholders
Lane 3
resources from Governmental institution &
civil society to bring adequate response to basin
issues
approach for bldg. inter-sector collaboration, awareness & appr.
Decision
mechanisms for integrated management of water resources in the
basin
Lane 4
IWRM I l t ti B ti ( i i l )IWRM Implementation on Bagmati (principle)
VisionClean, green and healthyriver system in Kathmandu;
Water Induced Di t
river system in Kathmandu; that is full of life and valued by all.
Water
River Environment Management
Disaster Management
I t iti l tresource Management
Intuitional setup
Infrastructure
InformationFoundation of Four "I"s
Involvement of Stakeholders
Future Plan Rainwater harvesting, Ground water recharge and
livelihood development in buffer zone. Augmentation of river discharge by constructing
dam in upper Bagmati.Watershed Management activities in upper
Bagmati. (ADB/PPTA/8050)
Dam Height Storage Yield
Nagmati Dhap 18 m 0.7 mcm 24 l/s
Nagmati 60 m 5.0 mcm 230 l/s
Bagmati 50 m 3.4 mcm 200 l/s
Contour Photograph of proposed Dam siteFuture Plan …..
Contour Photograph of proposed Dam site
Proposed WWTP in Kathmandu
Gokarna)
Guheshwori
Madhyapur Thimi)
Bhaktapur
Balkumari 216 MLD
Sundarighat
397 MLD
Bhaktapur
NakhuChovar
The Way Forward
Developing HPCIDBC as a subsidiary River Basin Organization (RBO) for Kathmandu V llValley. Institutional Strengthening and capacity
development of HPCIDBCdevelopment of HPCIDBC. Defining organization for Bagmati Basin.
Conclusion
• Bagmati River and its tributaries environmentalsituation has not deteriorated IRREVERSIBLY. It
b t d i t ll ith tcan be regenerated environmentally with supportfrom Development Partners, Donor Agencies, CivilSociety, NGOs and INGOs etc.
• As Bagmati attaches spiritual and emotionalsignificance to the Nepali people (most of thesignificance to the Nepali people (most of theimportant temples, shrines, ghats, etc. are locatedalong the river banks and are used for differentcultural and ritual purposes), conservation of riversis very important for the protection of both naturalresources and rich cultural heritage of the Valley.esou ces a d c cu u a e age o e a ey
www bagmati gov npwww.bagmati.gov.np