KDMP2016 - Layman's Report
KDMP2016 - Layman's Report
KDMP2016 - Layman's Report
REVISION
DESCRIPTION DATE YY mm DD BY APPROVED NOTES
2016 12 22 PB, VM, AB AG
LAYMAN’S REPORT
INTRODUCTION
In the context of Kampala, where watersheds of many urban centers receive significant
amount of annual rainfall and
where rainfall intensity is
generally high, control of runoff
at source, flood protection, and
safe disposal of excess
water/runoff through proper
drainage facilities becomes
essential.
With urbanization, impermeability enhances with the increase in impervious surfaces (i.e.
residential houses, commercial buildings, paved roads, parking lots, etc.), drainage pattern
changes, overland flow gets faster, flooding and environmental problems such as land
degradation occur. It is a crucial problem facing the existing and future road infrastructure.
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DRAINAGE CRITICALITIES IN KAMPALA
The potential constrictions along the drainage network mainly consist in the crossings: it is
common to
observe in
Kampala that
while a channel
may be
adequately
designed to
convey a certain
amount of flow,
the downstream
crossing is clearly
inadequate to let
the water free-
flow.
The majority of the crossing infrastructures along the drainage network of Kampala
constitute a
constriction with
respect to the
upstream
conveyed flow. At
the same time
many of the
channel sub-
reaches do not
have the same
flow capacity of
the upstream sub-
reach.
Presence of
constrictions within
the Kampala drainage
system
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Besides the issues of the undersized drains especially due to the bottlenecks of the crossing
structures, the flow capacity along the network is further reduced by the presence of:
collapses, blockages, sedimentation and waste disposal.
Collapses are caused by inadequate construction criteria and poor maintenance while
blockage consists in pipes or tubes that constitute an obstacle to the free flow.
The last two latter phenomena are particularly problematic and related to the intense
urbanization of the city:
- Sedimentation: material mainly comes from the excavation for infrastructures and
reaches the open drains as consequence of surface run-off;
- Dumping of solid waste: the densely populated areas generally have poor solid waste
management therefore people dispose the domestic waste directly into the
channels.
Eroded material and solid waste ultimately travel into and along the course of drainage
channel until the material deposits at some points downstream where the bed slopes are
flatter and the velocity reduces. The result is that the bed level reaches the elevation of the
surrounding ground level.
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KAMPALA DRAINAGE MASTER PLAN 2003
In 2003 the Ministry of Local Government and Kampala City Council (KCC) initiated the
preparation of a Kampala Drainage Master Plan (KDMP) to ensure that rehabilitation and
sustainable upgrading for overall
stormwater planning are
implemented in an orderly and
affordable manner.
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KAMPALA DRAINAGE MASTER PLAN 2016
INTRODUCTION
After more than 10 years Kampala has been characterized by a huge development in terms
of urban and infrastructure development so the drainage systems of Kampala need to be
updated with respect to the findings of KDMP2003.
The Government of Uganda has decided to use founding from the International
Development Association (IDA) for the implementation of the Kampala Institutional and
Infrastructure Development Project (KIIDP)—Phase 2 to enhance city infrastructure and to
improve urban mobility and deepen institutional reforms for the economic growth.
Within this framework the present Project (Kampala Drainage Master Plan 2016 -
KDMP2016) regards a Consultancy Services for updating the KDMP2003: the updated
KDMP contains a new implementation program for storm water drainage system in
Kampala City that reflects the current socio-economic status and also addresses the
emerging challenges to drainage management in Kampala City.
The principal tasks for the realization of the Kampala Drainage Master Plan 2016 are:
The concept of the holistic approach is essential and it is a milestone also for the present
Project: thorough study has to be done to come up with strategies which incorporate
physical as well as social aspects in order to bring multiple stakeholders in the flash flood
risk management.
Therefore, in updating Kampala Drainage Master Plan the Consultant proposes alternative
engineering solutions that are assessed through a holistic and multi-criteria approach: It
takes into consideration all the sectors and aspects involved in the issues that the City is
facing.
The final and main scope of the Drainage Master Plan aims to propose interventions useful
to eliminate, or minimize, the hydraulic issues of the drainage network and such
interventions can be classified as NON STRUCTURAL MEASURES and STRUCTURAL
MEASURES.
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NON-STRUCTURAL MEASURES: are usually less capital-intensive but have significant
social and economic implications. They cover aspects of institutional and legislative
framework, strategies of control erosion and wastewater disposal, operation and
maintenance, communication strategy, land-use zoning and planning and monitoring
and warning system;
STRUCTURAL MEASURES: that play a significant role in limiting damage and loss of life
and are capital-intensive. They consist in physical interventions on the system.
Non-structural pre-
emptive measures are
the responsibility of
everyone from private
citizens to National
Government while
responsibility for
structural measures is
mainly a function of
government (at all
levels) and is
determined by the legal
framework in the
country.
Currently there are several opportunities for the correct implementation of the Drainage
Master Plan:
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COMPREHENSIVE SURVEY AND GEO-DATABASE
The comprehensive survey on the existing drainage infrastructure allowed to define the
geometry (sizing) and to assess qualitative aspects that characterize the current status of
the drainage system.
The survey has been carried out for 5 months starting on August 2015 and ending at
December 2015.
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SOCIO-ECONOMIC AND ENVIRONMENTAL SURVEY
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HYDROLOGICAL,HYDRAULIC AND RISK ANALYSIS
Rainfall events experienced in Kampala are mostly thundery characterized by high intensity
rainfall over short
periods and those are
the events that lead
to flash flood within
the City.
To design the
stormwater drainage
infrastructures for an
event of defined
return period it is
necessary to
elaborate the
recorded flow data to
obtain the peak flow.
Annual distribution of rainfall in Kampala and Average annual rainfall distribution in mm over Uganda
Results of the Hydrological Analysis are the main inputs of the Hydraulic Model that has
been used to determine the depth of the water inside the drainage network and the
flooding maps of each basin.
The outcome of the modeling simulations is the flooding risk assessment where the key
concepts underpinning this research are flood hazard and flood protection:
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flood hazard Denotes the probability and severity of occurrence of a flood event of
a certain magnitude (in terms of water depth);
flood protection That refers to the extent to which different types of land use are
located in the flooding areas and it is represented by the concept of
demanded level of protection.
Eventually the flood risk analysis combines the assessment of the flood hazard analysis with
the flood exposure so for example, if buildings are located in a flood plain, both hazard and
exposure are present.
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MULTI CRITERIA ANALYSIS AND BEST OPTIONS OF INTERVENTION
The objective of the updating of the Drainage Master Plan regards the development of
alternative solutions to solve the flooding problems that will be assessed according to multi-
criteria analysis (MCA) to determine a preferred option.
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STORMWATER MANAGEMENT POLICY
Stormwater Management Policy covers the issues related to the non-structural measures
that need to be implemented in the short term.
Due to the characteristics of the topography, of the rain events and of the existing drainage
system, in Kampala there is a need for an Integrated Flood Management (IFM) approach
that emphasizes the coordination of what has to be done upstream for the sake of
downstream inhabitants.
Benefits of SUDs
The Integrated Urban water management (IUWM) constitutes one of the components of the
urban water cycle (together with water supply and sanitation) and is integrated within the
wider watershed management, and within other areas determining city’s development (i.e.
land use, transportation, waste management).
Policies and Strategies are fundamental to support the correctness and effectiveness
application of the interventions proposed within the framework of the Master Plan and
include:
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ECONOMIC ANALYSIS AND IMPLEMENTATION STRATEGY
The economic analysis represents the elaboration of the economic and financial part of
the Project and presents the calculations of costs and benefits on the proposed
interventions, done with a “Cost-Benefit Analysis”.
Based on economic analysis, the implementation strategy has been defined identifying the
intervention to be done in the short, medium and long term that have high, medium and
low priority.
PERIODS ACTION
SHORT TERM 2017-2021 high priority
MEDIUM TERM 2022-2040 medium priority
LONG TERM 2041-2060 low priority
Likely the prioritization of the interventions will be given to the crossings: as underlined
many times, the current status of the majority of the culverts represent in many cases
bottlenecks for the drainage system.
In the next pages the detailed tables are reported with the implementation definition of
each element, crossing or channel: to facilitate the localization of each element, the name
of the crossed roads is provided in case of crossing, while for channel sub-reaches the name
of the upstream and downstream road is indicated.
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Phasing strategy for Nakivubo basin
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Short term Medium term Long term
Sub-Basin Code Name of Drain Section type Name 2017 2018 2019 2020 2021 2022-2030 2031-2040 2041-2050 2051-2060
Nabugabo
Nakivubo
Nakivubo stadium access
Nakivubo stadium access
New Taxi park
Owino market access
Unpaved
Crossing
New Port Bell Road
Gadaffi Road - Mpaba Road
Channels Sir Apollo Kagwa Road -
NA1_10 Kakajjo Gadaffi Road
Mpaba Road
Crossing
Gadaffi Road
Kibira Road - Ds
Luthuli Avenue - Lithuli Avenue
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Short term Medium term Long term
Sub-Basin Code Name of Drain Section type Name 2017 2018 2019 2020 2021 2022-2030 2031-2040 2041-2050 2051-2060
Nyondo Road
Jinja Road - Railway
Lugogo Forest Mall access -
Jinja Road
Naguru Road - Lugogo Forest
Mall access
Channels
Railway - Ds
Railway - Spring Road
Saddler Road - Naguru Road
NA1_3 Lugogo
Spring Road - Railway
Jinja Road
Naguru Road
Railway
Crossing
Lugogo Forest Mall access
Saddler Way
Spring Road
Railway - Ds
Acacia Avenue - Centenary
Park Road
Centenary Park Road -
Unpaved
Channels
Jinja Road - Railway
Kitante Lane - Acacia Avenue
16
Short term Medium term Long term
Sub-Basin Code Name of Drain Section type Name 2017 2018 2019 2020 2021 2022-2030 2031-2040 2041-2050 2051-2060
Kitante lane
Unpaved
Bypass Road (Mukwano) - Ds
Kibuli Road - Bypass Road
Channels (Mukwano)
Lubuga Road - Kibuli Road
NA1_5 Kayunga Us - Lubuga Road
Bypass Road (Mukwano)
Crossing Kibuli Road
Lubuga Road
Bypass Road (Mukwano) - Ds
Kibuli Road - Bypass Road
Channels
(Mukwano)
NA1_6 n.a Us - Kibuli Road
Bypass Road (Mukwano)
Crossing
Kibuli Road
Kevina Road - Unpaved
Channels Railway - Nsambya Road
Unpaved - Railway
NA1_7 n.a Kevina Road
UP Kevina Road
Crossing
Railway
Nsambya Road
NA1_7 n.a. Channels Nsambya Road - Ds
Katwe Road - Mengo Hill Road
Channels Katwe Road - Mutebi Road
NA1_8 Katwe
Mutebi Road - Katwe Road
Crossing Katwe Road
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Short term Medium term Long term
Sub-Basin Code Name of Drain Section type Name 2017 2018 2019 2020 2021 2022-2030 2031-2040 2041-2050 2051-2060
Entebba Road
Mengo Hill Road
Kafunbe Mukasa - Owino
Channels
NA1_9 n.a Market access
Crossing Owino market access
18
Phasing strategy for Lubigi basin
19
Short term Medium term Long term
Sub-Basin Code Name of Drain Section type Name 2017 2018 2019 2020 2021 2022-2030 2031-2040 2041-2050 2051-2060
Access to Trinity High School -
Unpaved
Coffee Lane - Nabweru Kawempe
Road
Mangeri Road - Unpaved
Nabweru Road
Unpaved
Crossing Coffee Lane
Mangeri Road
Nabweru Kawempe Road
LU2_12 n.a. Channels Unpaved - Northern Bypass
Kalerwe - Northern Bypass
Channels
LU2_12_A n.a. Gayaza road - Kalerwe
Crossing Kalerwe
Us - Unpaved
Unpaved - Northern Bypass
Church Road - Unpaved
Channels Gayaza Road RAB - Unpaved
LU2_12_B n.a.
Mutebi Road - Gayaza Road RAB
Unpaved - Church Road
Unpaved - Mutebi Road
Crossing Church Road
20
Short term Medium term Long term
Sub-Basin Code Name of Drain Section type Name 2017 2018 2019 2020 2021 2022-2030 2031-2040 2041-2050 2051-2060
Unpaved
Mutebi Road
Northern Bypass - Ds
Unpaved - Kawempe Coll. Lane
Alice Kaggwa Road - Mambule Road
GGaboggola Mukasa road - Haji
Mumyuka Road
Haji Mumyuka Road - Unpaved
Kawempe Coll. Lane - Alice Kaggwa
Road
Channels Kawempe-Tula-Mpererwe Road -
Nyonjo Road
Mambule Road - Northern Bypass
Mbogo Road 2B - Nyonjo Road
Nyonjo Road - GGaboggola Mukasa
road
LU2_13 Kiyanja Nyonjo Road - Unpaved
Unpaved - Nyonjo Road
Us - Mbogo Road 2B
Northern By pass
Unpaved
Alice Kaggwa Road
GGaboggola Mukasa road
21
Short term Medium term Long term
Sub-Basin Code Name of Drain Section type Name 2017 2018 2019 2020 2021 2022-2030 2031-2040 2041-2050 2051-2060
Kamomboga Bahai Road - Bahai Road
Us - Kamomboga Bahai Road
Gayaza Road
Crossing Bahai Road
Kamomboga Bahai Road
Kawempe Tula-Mpererwe Road -
LU2_13_C n.a. Channels
Nyonjo Road
Unpaved - Ds
Channels
LU2_14 n.a. Us - Unpaved
Crossing Unpaved
Bukoto Kisaasi Road - Northern
Bypass
Kamwokya Kisalosalo Road - Ds
Kamwokya Kisalosalo Road -
Kamwokya Kisalosalo Road
Channels
Kyebando Kisalosalo Road -
Kamwokya Kisalosalo Road
Northern Bypass - Kyebando
LU2_15 Kyabatola Kisalosalo Road
Us - Bukoto 16
Bukoto 16
Bukoto Kisaasi Road
Crossing Kamwokya Kisalosalo Road
Northern Bypass
Kyebando Kisalosalo Road
LU2_15_A n.a. Channels Us - Ds
LU2_15_B n.a. Channels Bukoto 16 - Bukoto Kisaasi Road
Unpaved - Unpaved
Makamba Road - Mugema Road
LU2_2 n.a. Channels
Mugema Road - Ds
Nabulagala Road - Unpaved
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Short term Medium term Long term
Sub-Basin Code Name of Drain Section type Name 2017 2018 2019 2020 2021 2022-2030 2031-2040 2041-2050 2051-2060
Sentema Road - Makamba Road
23
Short term Medium term Long term
Sub-Basin Code Name of Drain Section type Name 2017 2018 2019 2020 2021 2022-2030 2031-2040 2041-2050 2051-2060
Hoima Road - Ds
Kisimu Road - Nabweru Road
Channels
Nabweru Road - Hoima Road
LU2_7 Tenga Us - Kisimu Road
Hoima Road
Crossing Nabweru Road
Kisimu Road
Us - Unpaved
Muteesa 2 Road - Northern Bypass
Channels Prince Luswata Road - Unpaved
Unpaved - Muteesa 2 Road
LU2_8 n.a.
Unpaved - Prince Luswata Road
Unpaved
Crossing Muteesa 2 Road
Prince Luswata Road
Unpaved - Ds
Unpaved - Unpaved
Channels Us - Unpaved
Unpaved
Crossing
Nambweru Road
24
Phasing strategy for Nalukolongo basin
25
Short term Medium term Long term
Sub-Basin Code Name of Drain Section type Name 2017 2018 2019 2020 2021 2022-2030 2031-2040 2041-2050 2051-2060
Nalumunye Road
Unpaved - Unpaved
Us - Unpaved
Railway - Ds
Channels
NA3_5 n.a. Us - Railway
Crossing Railway
Unpaved - Ds
Us - Unpaved
Binaisa Road - Unpaved
NA3_6 Wakaliga Channels
Kiyimba Road - Unpaved
Unpaved - Kiyimba Road
Unpaved - Wamala Road
26
Short term Medium term Long term
Sub-Basin Code Name of Drain Section type Name 2017 2018 2019 2020 2021 2022-2030 2031-2040 2041-2050 2051-2060
Wamala Road - Binaisa Road
Kiyimba Road
Wamala Road
Crossing
Unpaved
Binaisa Road
Masaka Road - Railway
Channels
Us - Masaka Road
NA3_7 n.a.
Masaka Road
Crossing
Railway - Masaka Road
Kintu Road - Unpaved
Suna Road - Ds
Channels
Unpaved - Masaka 1 Road
Us - Wamala Road
Kintu Road
Masaka 1 Road
Wamala Road
Unpaved
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Phasing strategy for Kansanga basin
28
Short term Medium term Long term
Sub-Basin Code Name of Drain Section type Name 2017 2018 2019 2020 2021 2022-2030 2031-2040 2041-2050 2051-2060
Nsereko Road - Ds
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Phasing strategy for Gaba basin
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Phasing strategy for Mayanja/Kaliddubi basin
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Short term Medium term Long term
Sub-Basin Code Name of Drain Section type Name 2017 2018 2019 2020 2021 2022-2030 2031-2040 2041-2050 2051-2060
Unpaved 0 0 0 0 0 0 78116.50028 0 0
Buule Road to Munyonyo district 0 0 0 0 0 0 18197.23608 0 0
Crossing Exists 2 0 0 0 0 0 0 25569.88676 0 0
Kagodo Road 0 0 0 0 0 0 6818.636471 0 0
Lwasa Road 0 0 0 0 0 0 30257.69934 0 0
Us - Unpaved 0 0 0 0 0 0 808486.6683 0 0
Channels
MK5_5 n.a. Unpaved -Ds 0 0 0 0 0 0 333434.4819 0 0
Crossing Unpaved 0 0 0 0 0 0 6503.639393 0 0
Channels Us - Ds 0 0 0 0 0 0 1904995.835 0 0
MK5_6 Samanubo-Kampala /Busabala Road 0 0 0 0 0 0 18210.1903 0 0
Crossing
n.a. Us - Ds 0 0 0 0 0 0 8671.519191 0 0
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Phasing strategy for Kinawataka basin
33
Short term Medium term Long term
Sub-Basin Code Name of Drain Section type Name 2017 2018 2019 2020 2021 2022-2030 2031-2040 2041-2050 2051-2060
Kiwatule Road - Unpaved
Unpaved - Ancook Road
Us - Kiwatule Road
Ancook Road
Crossing Kiwatule Road
Unpaved
Factory Close
Factory close - Ds
Factory Close
Kimera Road
Crossing
Ntinda Road
Unpaved
34
Phasing strategy for Nalubaga basin
35
Phasing strategy for Walufumbe basin
36
Phasing strategy for Mayanja North basin
37
STAKEHOLDERS AND COMMUNITY INVOLMENT
To pursue a correct and effective implementation of the KDMP 2016 two steps are
fundamental:
Developing a Stakeholders’ Engagement Strategy
Developing a Community Engagement Strategy
Stakeholder’s meeting
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