Your search found 11 records
1 Lankford, B.; Sokile, C.; Yawson, Daniel; Lévite, Herve. 2004. The river basin game: A water dialogue tool. Colombo, Sri Lanka: International Water Management Institute (IWMI) v, 34p. (IWMI Working Paper 075) [doi: https://doi.org/10.3910/2009.263]
River basins ; Decision making ; Water resource management ; Social participation ; Case studies / Tanzania / Great Ruaha River
(Location: IWMI-HQ Call no: IWMI 333.91 G148 LAN Record No: H036026)
(2.42 MB)
2 Kashaigili, J. J.; McCartney, Matthew; Mahoo, H. F.; Lankford, B. A.; Mbilinyi, B. P.; Yawson, D. K.; Tumbo, S. D. 2006. Use of a hydrological model for environmental management of the Usangu Wetlands, Tanzania. Colombo, Sri Lanka: International Water Management Institute (IWMI). 39p. (IWMI Research Report 104) [doi: https://doi.org/10.3910/2009.104]
Wetlands ; Rivers ; Ecology ; Environmental effects ; Remote sensing ; Hydrology ; Simulation models ; Water budget ; Irrigated sites ; Land cover ; Time series analysis / Tanzania / Usangu Wetlands / Great Ruaha River
(Location: IWMI-HQ Call no: IWMI 333.91 G148 KAS Record No: H039649)
(852KB)
This report presents the findings of a study to assess changes to flows into, and downstream of, the Usangu Wetlands, located in the headwaters of the Great Ruaha River, Tanzania. Hydrological data, in conjunction with remote sensing techniques, were used to provide insights into changes that have occurred to the Eastern Wetland. Results indicate that, between 1958 and 2004, inflows to the wetland declined by about 70 percent in the dry season months (July to November) as a consequence of increased human withdrawals, primarily for irrigation.
3 Kashaigili, J. J.; McCartney, Matthew; Mahoo, H. F. 2007. Estimation of environmental flows in the Great Ruaha River Catchment, Tanzania. Physics and Chemistry of the Earth, 32:1007-1014.
Rivers ; Ecosystems ; Catchment areas ; Hydrology ; Water requirements ; Wetlands ; National parks / Tanzania / Great Ruaha River / Ruaha National Park / Rufiji River
(Location: IWMI HQ Call no: IWMI 551.483 G148 KAS Record No: H040358)
4 McCartney, Matthew P.; Lankford, B. A.; Mahoo, H. 2007. Agricultural water management in a water stressed catchment: lessons from the RIPARWIN Project. Colombo, Sri Lanka: International Water Management Institute (IWMI). 46p. (IWMI Research Report 116) [doi: https://doi.org/10.3910/2009.116]
River basin management ; Water stress ; Irrigation programs ; Irrigation management ; Irrigation efficiency ; Water use ; Water allocation ; Wetlands ; Water rights ; Water law ; Economic aspects ; Water rates ; User charges ; Water user associations ; Decision support tools / Tanzania / Great Ruaha River / Usangu Plains
(Location: IWMI HQ Call no: IWMI 631.7 G148 MCC Record No: H040549)
http://www.iwmi.cgiar.org/Publications/IWMI_Research_Reports/PDF/Pub116/RR116.pdf
https://vlibrary.iwmi.org/pdf/H040549.pdf
https://vlibrary.iwmi.org/pdf/H040549.pdf
(0.79 MB) (812 KB)
In the face of growing water stress and increasing concerns over the sustainability of water use, Tanzania has, in common with many other countries in Africa, focused largely on the development of more integrated catchment-wide approaches to water management. In the Great Ruaha River Basin, considerable effort has gone into increasing water productivity and the promotion of mechanisms for more efficient allocation of water resources. Over a period of five years, the RIPARWIN project investigated water management in the basin and evaluated the effectiveness of some of the mechanisms that have been introduced. The study findings are relevant to basins in developing countries where there is competition for water and irrigation is one of the main uses.
5 McCartney, Matthew P.; Kashaigili, Japhet; Lankford, B. A.; Mahoo, H. F. 2008. Hydrological modelling to assist water management in the Usangu wetlands, Tanzania. International Journal of River Basin Management, 6(1): 51-61.
Water management ; Environmental effects ; Wetlands ; Swamps ; Hydrology ; Simulation models ; Water allocation ; Rivers ; Flow / Tanzania / Great Ruaha River / Usangu Plains / Ihefu Swamp
(Location: IWMI HQ Call no: IWMI 333.91 G148 MCC Record No: H041015)
The Usangu wetlands, containing the Ihefu swamp, are one of the most valuable inland wetlands in Tanzania. Over the last decade, outflow from the swamp has ceased for extended periods in the dry season. This has had severe consequences for downstream ecosystems, including the Ruaha National Park. Results from a simple hydrological model developed for the Ihefu swamp indicate that, between 1958 and 2004, dry season inflows declined by approximately 60% and the dry season area of the swamp decreased by approximately 40% (i.e. from 160 km2 to 93 km2). The model also shows that to maintain minimum downstream environmental flows requires a minimum inflow of 7m3s?1, which is approximately 65% greater than occurs currently. There is significant potential for improving water use efficiency. However, given the socio-economic importance of current levels of water withdrawal, this inflow may be difficult to achieve. Consequently consideration needs to be given to other options, including upstream storage and water management within the wetland itself. This paper highlights that a simple model supplying relatively low- confidence, but indicative, results can provide a useful basis for contemplating water management options.
6 Lankford, B.; Cour, J. 2005. From integrated to adaptive: a new framework for water resources management of river basins. In Lankford, B. A.; Mahoo, H. F. (Eds.). Proceedings of East Africa Integrated River Basin Management Conference, Sokoine University of Agriculture, Morogoro, Tanzania, 7 – 9 March 2005. Theme four: water governance and institutions. Morogoro, Tanzania: Soil-Water Management Research Group, Sokoine University of Agriculture. pp.246-263.
River basin management ; Water policy ; Water allocation / Tanzania / Great Ruaha River / Usangu Plains catchment
(Location: IWMI HQ Call no: CD Col Record No: H041164)
7 Mahoo, H. F.; Mkoga, Z. J.; Kasele, S. S.; Igbadur, H. E.; Hatibu, N.; Rao, K. P. C.; Lankford, B. 2007. Productivity of water in agriculture: farmers’ perceptions and practices. Colombo, Sri Lanka: International Water Management Institute (IWMI), Comprehensive Assessment Secretariat. 31p. (Comprehensive Assessment of Water Management in Agriculture Discussion Paper 5)
River basins ; Catchment areas ; Water productivity ; Farmers ; Stakeholders ; Conflict ; Farming systems ; Villages ; Irrigation methods ; Domestic water ; Households / Africa / Africa South of Sahara / Tanzania / Great Ruaha River / Rufiji River Basin / Mkoji sub-catchment / Ikhoho village / Inyala village / Mahongole village / Mwatenga village / Ukwaheri village / Madundasi village
(Location: IWMI-HQ Call no: e-copy only Record No: H042367)
http://www.iwmi.cgiar.org/assessment/files_new/publications/Discussion%20Paper/CADiscussionPaper5.pdf
https://vlibrary.iwmi.org/pdf/H042367.pdf
https://vlibrary.iwmi.org/pdf/H042367.pdf
(0.92 MB) (509.46KB)
Stakeholders in agriculture and water related issues have different perceptions about the productivity of water. This is evident by the different definitions of productivity of water, though most of the definitions hinge around the benefits accrued from water use. The viewpoint of smallholder farmers’ regarding the productivity of water is important in order to promote the concept of productivity of water in a country like Tanzania. This is because 95 percent of the farmers are smallholders. This paper presents the farmers’ understanding of the productivity of water in the Mkoji sub-catchment (MSC) in the Ruaha River Basin in Tanzania. It also presents their practices aimed at increasing the productivity of water in the area. It reveals that the concept of productivity of water has been part of the smallholder farmers in Mkoji. The farmers’ concept of productivity of water is the same as that of other stakeholders, only that it is less formal than as expected by experts. Farmers in the sub-catchment judge productivity of water based on the amount of rainfall and its influence of their yields. Productivity of water is high or low if the average seasonal rainfall is ‘good’ or ‘bad’. They put so much value to water that they go to the extent where they are willing to pay more to acquire a piece of land close to a water source. Furthermore, there is evidence that they engage in fights and ‘steal’ water as a result of the high value they place on water. The farmers have adopted tillage methods, agronomic practices and crop diversification approaches to maximize yield from available water. The paper concludes that these strategies adopted by farmers could be a good starting point for formulating measures to improving productivity of water in the area. Therefore, there is a strong need for an in-depth understanding of farmers’ practices to determine the most effective, economical and sustainable options in increasing productivity of water, and to thereby formulate approaches for adaptation, uptake and upscaling. This paper explores farmers’ perceptions of productivity of water, practices and coping mechanisms for achieving greater water productivity. The perceptions are generated based on farmers’ understanding of water productivity, the value they place on land and water, and the struggle and conflicts resulting from the value they put on water. Furthermore, the paper presents farmers’ strategies to estimate productivity of water, and discusses the impact of the farmers’ practices, coping strategies and limitations associated with the practices. It was concluded from this paper that the theories and figures of productivity of water are less important to farmers, than their approaches to enhance their ability to effectively utilize water and to maximize production.
8 Molle, Francois; Wester, P. (Eds.) 2009. River basin trajectories: societies, environments and development. Wallingford, UK: CABI; Colombo, Sri Lanka: International Water Management Institute (IWMI). 311p. (Comprehensive Assessment of Water Management in Agriculture Series 8)
River basin management ; River basin development ; Hydrology ; Water governance ; Water use ; History ; Water allocation ; Water transfer ; Water quality ; Irrigation management ; Groundwater management ; Surface irrigation ; Water lifting ; Pumping / Middle East / Jordan / South Africa / Mexico / Tunisia / Tanzania / Iran / India / China / USA / Australia / Lower Jordan River Basin / Olifants River Basin / Lerma-Chapala River Basin / Mediterranean River Basin / Great Ruaha River / Zayandeh Rud River Basin / Krishna River Basin / Bhavani River Basin / Yellow River Basin / Colorado River Basin / Murray Darling River Basin / Merguellil Basin
(Location: IWMI HQ Call no: IWMI 333.9162 G000 MOL Record No: H042436)
(7.16MB)
9 Lankford, B. A.; Tumbo, S.; Rajabu, K. 2009. Water competition, variability and river basin governance: a critical analysis of the Great Ruaha River, Tanzania. In Molle, Francois.; Wester, P. (Eds.). River basin trajectories: societies, environments and development. Wallingford, UK: CABI; Colombo, Sri Lanka: International Water Management Institute (IWMI). pp.171-195. (Comprehensive Assessment of Water Management in Agriculture Series 8)
River basin development ; Water governance ; Irrigation efficiency ; Farming systems ; Water users ; Population growth ; Water power / Tanzania / Great Ruaha River
(Location: IWMI HQ Call no: IWMI 333.9162 G000 MOL Record No: H042453)
10 Molle, Francois; Wester, P. (Eds.) 2009. River basin trajectories: societies, environments and development. Wallingford, UK: CABI; Colombo, Sri Lanka: International Water Management Institute (IWMI). 311p. (Comprehensive Assessment of Water Management in Agriculture Series 8)
River basin management ; River basin development ; Hydrology ; Water governance ; Water use ; History ; Water allocation ; Water transfer ; Water quality ; Irrigation management ; Groundwater management ; Surface irrigation ; Water lifting ; Pumping / Middle East / Jordan / South Africa / Mexico / Tunisia / Tanzania / Iran / India / China / USA / Australia / Lower Jordan River Basin / Olifants River Basin / Lerma-Chapala River Basin / Mediterranean River Basin / Great Ruaha River / Zayandeh Rud River Basin / Krishna River Basin / Bhavani River Basin / Yellow River Basin / Colorado River Basin / Murray Darling River Basin / Merguellil Basin
(Location: IWMI HQ Call no: IWMI 333.9162 G000 MOL c2 Record No: H042460)
11 Yang, Y. C. E.; Wi, S. 2018. Informing regional water-energy-food nexus with system analysis and interactive visualization – a case study in the Great Ruaha River of Tanzania. Agricultural Water Management, 196:75-86. [doi: https://doi.org/10.1016/j.agwat.2017.10.022]
Water supply ; Energy generation ; Hydropower ; Food production ; Water deficit ; Irrigation efficiency ; River basins ; Stream flow ; Hydrology ; Models ; Uncertainty ; Policy ; Evaluation ; Economic aspects ; Case studies / Tanzania / Great Ruaha River
(Location: IWMI HQ Call no: e-copy only Record No: H048513)
(5.19 MB)
In sub-Saharan Africa, water resources are scarce and subject to competing uses – especially for agricultural production, energy generation, and ecosystem services. These water intensive activities in the Usangu plains and the Ruaha National Park in southern Tanzania, present a typical case for such water competition at the water-energy-food nexus. To decipher the coupled human-nature interactions in the Great Ruaha River basin and effectively communicate the results to non-technical practitioners, the water-energy-food nexus competition in the system is simulated using an advanced water system modeling approach and findings are visualized via interactive web-based tools (Data-Driven Document, D3) that foster fuller understanding of the findings for both practitioners and stakeholders. Our results indicate that a combination of infrastructural and procedural measures, each acceptable from a social and economic perspective, and understanding that zero flows cannot be totally eliminated during dry years in the Ruaha National Park, are likely to be the best way forward. This study also reveals that the combination of improvements in irrigation efficiency, cutbacks on proposed expansion of irrigated lands, and a low head weir at the wetland outlet, significantly reduces the number of zero flow days (i.e., increasing ecosystem function), resulting in positive effects on agricultural sector from limited (if any) reduction in rice crop yields. These upstream measures are all relatively cost efficient and can combine to free-up resources for other economic activity downstream (i.e. more stable hydropower production).
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