However, as is the case with all development work, caution must be taken in applying a successful model from one disparate case to another. The 2017 regent landslide, freetown peninsula, sierra leone. The national flood insurance program nfip was established in 1968 through the passage of the national flood insurance. Prev next design and performance of the sasumua dam. The investment is also funding capital expenditure required for infield irrigation, which is enabling the scaleup of the farms banana and horticulture production. In 2003 the committee issued a report entitled the cost of rehabilitating our nations dams. Guidelines for construction cost estimating for dam. It provides the capital, nairobi, with 20% of its fresh water needs.
Once modifications for lake barton are completed, the dam s flood protection, recreation, and water quality benefits will continue for the next 50. Hydrological, economic, and institutional assessment for storage development. Cwc has initiated the process of empanelling dam safety experts based on minimum qualification and experience as per dam safety guidelines. Sasumua dam gatanga ethiopia kenya somalia tanzania uganda indian ocean. Public disclosure authorized public disclosure authorized public disclosure authorized public disclosure authorized. Towards a strategic analysis of water resources investments. Kansas dam safety conference 2018 dam rehabilitation. Pdf ecosystem service preferences across multilevel. Guidelines for construction cost estimating for dam engineers and owners was prepared by the ussd committee on construction and rehabilitation. Guide to dam rehabilitation utilizing the usda natural. Dam rehabilitation and the national flood insurance program what designers, regulators and dam owners need to know.
Insights from a watershed in kenya ecology and society. The sasumua dam catchment covers approximately 107 square kilometres, of which 50% is under cultivation. There is no substitute that can be used on the same engineering scale and its sustainability, expolitation and further development are imperatives to creating and maintaing a healthy economy and environment worldwide. On corporate social responsibility front, we feature a joint tree planting csr activity at sasumua dam that brought together awsb, east african. The objective of the kariba dam rehabilitation project is to assist the zambezi river authority in securing the longterm safety and reliability of the kariba dam hydroelectric scheme.
The white paper provides support for responsible cost estimating for new dams and dam rehabilitation projects. Vail dam was constructed by the vail company in 1949 as a 152foot high concrete arch dam for irrigation and water supply purposes. Seasonal and regional water scarcity exacerbates the difficulty to improve water supply the kenyan water sector underwent farreaching reforms through the water act no. Part of the water supply for the sasumua dam derives from the aberdares and is of good quality once organic debris is. Zimbabwes kariba hydropower dam to get more water allocation. Its a highly productive agricultural area with vegetables being the mainstay. Dec 02, 2014 zambia kariba dam rehabilitation project posted on december 2, 2014 by nl4worldbank the kariba dam and hydroelectric scheme hes was constructed across the zambezi river between 1956 and 1959 and has been central to energy security and supporting economic development in both zambia and zimbabwe. Signing ceremony for the kariba dam rehabilitation project 20 february 2015 26 february 2015 the african development bank afdb, the european union eu, the swedish embassy to zambia and the world bank group wbg today signed agreements with the governments of zambia and zimbabwe to initiate financing for the rehabilitation of the kariba dam. Engineers generally agree that the design of a dam is not complete until after the dam has been built and the reservoir. Although rehabilitation of the dam in 2011 restored its original storage capacity, current. Polluted runoff from small towns and farms results in high turbidity, high bacterial count and high water treatment costs. Nairobi water and sewerage company is an iso 9001 certified institution that is purely tasked with providing water and sewerage services to the residents of nairobi. The guide introduces the reader to measures aimed at improving the safety of new and existing dams so as to reduce. Sasumua dam is located at the southern ridges of kenyas aberdare mountains.
In addition, cwc has prepared a comprehensive national dam safety act. Kariba dam rehabilitation works are progressing well. At this level of study the engineer identifies the options and examines them from. Given before the subcommittee on vahudindependent agencies, committee on. The current top of dam elevation is above the flowline elevation of the box culvert at interstate highway 35, upstream from the dam. The decisionmaking process for large water infrastructure projects in kenya 27 3. If you dont change browser settings you agree with it. Water storage, transport, and distribution the rehabilitation of dams and reservoirs geoffrey p sims encyclopedia of life support systems eolss undertakes a feasibility study to identify the possible solutions to each of the problems. Sasumua is located in central kenya, about 90 km northwest of nairobi, at an altitude of 22003850 m asl, characterised by steep slopes. The rehabilitation of khe gang dam and reservoir is one of the subprojects being proposed for funding under the world bankassisted dam rehabilitation and safety improvement project drsip. To be prepared to mitigate the consequences in case of dam accidents. In societies that care about dam safety, the normal aims with their actions are.
Although rehabilitation of the dam in 2011 restored its original storage capacity, current water demand for nairobi 650,000 m. Among the achievements is the expansion of infrastructure to keep pace with population growth, in particular through the construction of the thika dam and associated water treatment plant and pipelines during the 1990s. Part of the water supply for the sasumua dam derives. Ageing process and rehabilitation works at riolunato dam italy.
The rehabilitation plan for lake barton is scheduled for completion in mid2009 with design in 2009 and construction in 2010. The cost of rehabilitating our nations dams 2016 update in 2001, an asdso task group was formed and tasked with preparing a report on the cost of rehabilitating our nations dams. Sasumua dam sasumua dam is a pond class h hydrographic in central province central, kenya africa with the region font code of africamiddle east. Factors influencing restoration and sustainabilityof the nairobi dam in nairobi county, kenya by julia wangui rugo a research project report submitted in partial fulfillment of the requirement for the. Feb 15, 2017 the zambian and zimbabwean governments have signed a works contract for the first component of the kariba dam rehabilitation project. The catchment has a high population which is growing at 3. Download fulltext pdf download fulltext pdf download fulltext pdf ecosystem service preferences across multilevel stakeholders in comanaged forests. The postacute care facilities will be required to notify aetna of the admission within 48 hours. Part of the water supply for the sasumua dam derives from the aberdares and is of good quality once organic debris is filtered out. Klein maricopoort dam in north west province, a conventional concrete spillway project, and albert falls dam in kwazulunatal, a brick parapet wall project. Sasumua dam sasumuadam map, weather and photos kenya. Request for qualifications architect engineer dam rehabilitation state of ohio standard forms and documents f11002d2018may publish date. Zambia kariba dam rehabilitation project netherlands for.
The dam was designed and constructed as a significant hazard dam and is currently classified as a high hazard class dam. The main purpose for the kariba dam at the time of its construction, and to this day, is to provide hydropower to the two countries that own the dam. The kariba dam rehabilitation works project is not a scheduled. Electronic submittals should be combined into one pdf file named with. Kisii water supply and sanitation project bunyunyu dam. In the year 1988 the kenya government compulsorily acquired approximately 1,200 acres of land to create space for the construction of thika dam ndakaini. Unesco eolss sample chapters water storage, transport, and distribution the rehabilitation of dams and reservoirs geoffrey p sims encyclopedia of life support systems eolss 1. The 5th international dam safety conference2019 is being held in bhubaneswar as a joint initiative of the government of india, government of odisha and the world bank under aegis of the ongoing world bank assisted dam rehabilitation and improvement project drip as a part of institutional strengthening.
The rehabilitation of dams and the prior monitoring, analyses and assessments is clearly a priority issue which sancold needs to address in support of the dam sector. Nairobi water and sewerage emergency physical investment project. After more than 50 years of providing power for the southern african region, the kariba dam now requires a series of rehabilitation works for its continued safe operation. Although this guide was prepared for dbsa project teams involved in dam projects, it can be a useful resource for dam owners and other people responsible for the operation and maintenance of dams. Chuniespoort dam spillway and parapet wall and mashashane dam spillway. Rehabilitation and restoration 32 citations from the agricola database 1984 1998. After an environmental impact assessment for the tokwe mkorsi dam construction was done, the consultant recommended relocation of 6393 households from within the dam basin and immediate catchment areas. Dam rehabilitation and the national flood insurance program. Among the achievements is the expansion of infrastructure to keep pace with population growth, in particular through the construction of the thika dam and associated water. General guidelines for new dams and improvements to existing dams in indiana 2001 edition indiana department of natural resources division of water indianapolis, indiana. In addition to the primary services offered the company is also engaged in cooperate social responsibility activities that are aimed. Apr 25, 2019 this site uses only session 3rd party cookies. Sasumua reservoir, which is operated by the nairobi city water and sewerage company.
Introduction there are more than 36 000 dams in the world. Rehabilitation package carries the promise of the development opportunities for the dispossessed. Dam rehabilitation projects may include modifications to the immediate downstream. Rehabilitation of the flumendosa arch dam by epoxy grouting, g. It would help dam owners to the avail expertise of these empanelled experts for safety inspections of their dams. Signing ceremony for the kariba dam rehabilitation project 20.
Consequently, the dam does not meet nrcs tr60 criteria for freeboard hydrograph fbh. Water supply and sanitation in nairobi is characterised by achievements and challenges. The dam rehabilitation and improvement project drip has been taken up with the world bank assistance for implementation initially in four states namely kerala, madhya pradesh, orissa, and tamil nadu and in central water commission. Many dam owners, especially private ones, find it difficult to finance rehabilitation projects. Mean annual rainfall is 1600 mm, peaking marchmay and. Making water infrastructure investment decisions in a. Hearthstone lake, upper north river watershed january 2015 dam rehabilitation fact sheet flood control dams, such as hearthstone lake, are designed to store floodwater during storm events and gradually release it into the stream over several days through the principal spillway pipe. This was followed by the ruiru dam in 1936 and the sasumua dam on the. The dam was constructed on the zambezi river, at grid reference 28. A case of the sasumua watershed in kenya food and agriculture. Agdevcos investment is being used to develop a 660 ml dam on the existing estate to secure water for 100 ha of irrigated land. At the time in kenya and in africa in general the only car to buy was a simba lion in kiswahili for its lion logo.
The sasumua water treatment plan project is certainly replicable, and the careful groundwork that has been laid by the world bank and world agroforestry centre provides a strong template for replication. See the complete profile on linkedin and discover rorys connections and jobs at similar companies. The dso has stated that a lot of work must still be done by several role players to bring the state of dam safety in south africa to satisfactory. Designing equitable payments for watershed services at the sasumua watershed. Concrete is a global material that underwrites commercial wellbeing and social development.
The paper summarizes the various design constraints leading finally to the selected rehabilitation project. The following is the established format for referencing this article. Towards a strategic analysis of water resources investments in kenya. Systemic constraints in coordinating water infrastructure investments in the tana river basin 28 3. A methodology, estimate and proposed funding mechanisms. Mwaura, dam coordinator, 2009, personal communication. However, economic activities around the dam s catchment are causing sedimentation and. World agroforestry centremeine van noordwijk suggested citation. Nearly half of all states have a grant or lowinterest loan program to assist dam owners with repairs. Part of the water supply for the sasumua dam derives from the.
Implementing pes within public watershed management. The national dam rehabilitation program title iv, section 5006 of pl 114322, the water infrastructure improvements for the nation act wiin. Can payments for ecosystem services contribute to adaptation to climate change. Dam rehabilitation in the usahistory and trends workshop on water security in bulgaria sofia, bulgaria, september 1819, 2017greg paxson, p. Sasumua dam supplies 15 per cent of water to nairobi residents. Githinji, dam coordinator, sasumua dam, 2009, personal communication. Completed a fiveyear rehabilitation project in the aberdares gbm concluded a fiveyear project to rehabilitate the sasumua, ndakini and gatanga catchment of the. Nairobi residents to continue having dry taps as water levels at ndakaini dam still low duration. Rapid assessment report for tokwe mukosi emergency country. We cant gurantee the accuracy andor they being up to date. Dam rehabilitation and improvement project dam safety. Vail dam is located east of the city of temecula, in southwest riverside county, in the state of california. To make the dam safety situation transparent to the public. View rory nightingales profile on linkedin, the worlds largest professional community.
Aging dams and watersheds rehabilitation and restoration. Vail dam has a maximum storage capacity of 42,680 acre feet, a. Rory nightingale managing director sasumua holdings ltd. Sasumua dam followed in 1945, both located in the aberdare range north of nairobi. Requirements for payments for watershed services in kenya. Guide to dam rehabilitation utilizing the usda natural resources conservation service watershed rehabilitation program the following provides a brief description of the major steps in a watershed dam rehabilitation project. The government chose mwenezi district as relocation place specifically chingwizi, chisase and masangula lands. Namirembe s, mwangi j, gatenya m, nyongesa f, shepherd k and luedeling e. The program is to be implemented over the next ten years, taking into account the need to continue operating the dam safely with minimal interruptions to power. The dam rehabilitation and improvement project drip is an initiative being undertaken by the central water commission cwc, government of india with world bank loan assistance, to improve the. Water supply and sanitation in kenya is characterised by low levels of access to water and sanitation, in particular in urban slums and in rural areas, as well as poor service quality in the form of intermittent water supply.
It is located at an elevation of 2,516 meters above sea level. In addition, cwc has prepared a comprehensive national dam safety act first drafted in. Few more states are expected to join drip at a later stage, for which. Njabini is a settlement in nyandarua county, kenya it lies to the east of the aberdare ranges and due to this receives a significant proportion of the rainfall in the region. Kariba dam government says the 74 million euros kariba dam rehabilitations works are progressing well with some sections of the dam such as the plunge pool receiving an extensive facelift. Figure 26 method used to estimate embankment dam construction cost. As part of the proposed rehabilitation project, the zra have committed to comply with international guidelines and standards, and as such are required to undertake a full environmental and social impact assessment esia for the project. The manual makes frequent references to the technical specifications of the standard labourbased rehabilitation contracts, which were also introduced and used on both frps in zambia and tanzania, and to relevant sections of. Pdf economics of land degradation and improvement in kenya. To, as far as possible, ensure that dam accidents with serious consequences will not occur.
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