Your search found 5 records
1 Calder, I. R. 1998. Water-resource and land-use issues. Colombo, Sri Lanka: International Water Management Institute (IWMI). v, 24p. (SWIM paper 3) [doi: https://doi.org/10.3910/2009.368]
Water resource management ; Water use ; Case studies ; Catchment areas ; Land use ; Hydrology ; Models ; Evaporation ; Soil moisture ; Decision support tools ; Runoff ; Flow ; Forestry ; Deforestation ; Erosion ; Rain / Africa / India / Lake Malawi / Karnataka
(Location: IWMI-HQ Call no: IWMI 333.91 G000 CAL Record No: H022680)
(1.07MB)
This paper reviews perceived notions of the relationships between catchment land use and hydrology and explores whether much of the widely disseminated folklore, so often inextricably linked with issues of land use, is based on myth or reality. Gaps in our knowledge of the underlying processes in relation to land use and hydrology are identified. Our ability to apply this knowledge at different scales ranging from the plot to the catchment and regional scales are discussed and specific examples are drawn from Indian and African case studies. Methods for linking spatially distributed land-use hydrological models with economics and ecology through decision support systems are outlined and proposed as a framework for the integrated management of land and water developments at the catchment scale.
2 Beadle, L. C. 1974. The inland waters of tropical Africa: An introduction to tropical limnology. London, UK: Longman. 365p.
Limnology ; Ecosystems ; Climate ; Rivers ; Lakes ; Swamps ; Fish ; Plankton / Africa / Nile / Niger / River Congo / Zambezi / Lake Albert / Lake Rudolf / The Sahara / Lake Chad / Lake Edward / Lake George / Lake Victoria / Lake Kivu / Lake Tanganyika / Lake Malawi / Lake Chilwa / Lake Kariba / Volta Lake / Lake Kainji / Lake Nasser-Nubia / Jebel Aulyia / Sennar Reservoir / Roseires Reservoir / Lake McIlwaine
(Location: IWMI-HQ Call no: 551.48 G100 BEA Record No: H039368)
3 Institute of Water and Sanitation Development (IWSD). 2010. 11th WaterNet/WARFSA/GWP-SA Symposium, Victoria Falls, Zimbabwe, 27-29 October 2010. IWRM for national and regional integration: where science, policy and practice meet: water and land. Harare, Zimbabwe: Institute of Water and Sanitation Development (IWSD). 561p.
River basins ; Water productivity ; Remote sensing ; Evapotranspiration ; Climate change ; Adaptation ; Global warming ; Farmers ; Wetlands ; Rainfed farming ; Water harvesting ; Dams ; Reservoirs ; Wastewater irrigation ; Irrigated farming ; Irrigation schemes ; Irrigation programs ; Crop production ; Maize ; Indigenous knowledge ; Weather forecasting ; Indicators ; Wetlands ; Ecosystems ; Economic evaluation ; Households ; Income ; Soil moisture ; Monitoring ; Models ; Conservation tillage ; Sedimentation ; Runoff ; Erosion ; Livestock ; Drought ; Decision making / Africa / Africa South of Sahara / Malawi / South Africa / Uganda / Swaziland / Zimbabwe / Botswana / Tanzania / Southern Africa / Limpopo River Basin / Shire Valley / Roswa Dam / Enhlanzeni District / Salima District / Lifuwu Irrigation Scheme / Mulanje District / Nessa Village / Karonga District / Muyeleka Village / Lake Malawi / Kampala District / Wakiso District / Lubigi Wetland / Lower Usuthu Smallholder Irrigation Project / Okavango River Basin / Victoria Falls / Zambezi River Basin
(Location: IWMI HQ Call no: e-copy only Record No: H043407)
http://www.waternetonline.ihe.nl/11thSymposium/WaterandLandFullPapers2010.pdf
https://vlibrary.iwmi.org/pdf/H043407.pdf
https://vlibrary.iwmi.org/pdf/H043407.pdf
(15.02 MB) (20.13 MB)
4 Nanteza, J.; de Linage, C. R.; Thomas, B. F.; Famiglietti, J. S. 2016. Monitoring groundwater storage changes in complex basement aquifers: an evaluation of the GRACE satellites over East Africa. Water Resources Research, 52(12):9542-9564. [doi: https://doi.org/10.1002/2016WR018846.]
Groundwater ; Water storage ; Monitoring ; Aquifers ; Satellite observation ; Surface water ; Soil moisture ; Water balance ; Models ; Lakes ; Wells ; Water use ; Hydroclimatology ; Climate change ; Precipitation ; Rain ; Estimation / East Africa / Kenya / Uganda / Tanzania / Burundi / Rwanda / Upper Nile Basin / Lake Victoria / Lake Tanganyika / Lake Malawi / Lake Turkana / Lake Albert / Lake Mweru / Lake Edward
(Location: IWMI HQ Call no: e-copy only Record No: H048049)
(3.24 MB)
Although the use of the Gravity Recovery and Climate Experiment (GRACE) satellites to monitor groundwater storage changes has become commonplace, our evaluation suggests that careful processing of the GRACE data is necessary to extract a representative signal especially in regions with significant surface water storage (i.e., lakes/reservoirs). In our study, we use cautiously processed data sets, including GRACE, lake altimetry, and model soil moisture, to reduce scaling factor bias and compare GRACE-derived groundwater storage changes to in situ groundwater observations over parts of East Africa. Over the period 2007–2010, a strong correlation between in situ groundwater storage changes and GRACE groundwater estimates (Spearman's = 0.6) is found. Piecewise trend analyses for the GRACE groundwater estimates reveal significant negative storage changes that are attributed to groundwater use and climate variability. Further analysis comparing groundwater and satellite precipitation data sets permits identification of regional groundwater characterization. For example, our results identify potentially permeable and/or shallow groundwater systems underlying Tanzania and deep and/or less permeable groundwater systems underlying the Upper Nile basin. Regional groundwater behaviors in the semiarid regions of Northern Kenya are attributed to hydraulic connections to recharge zones outside the subbasin boundary. Our results prove the utility of applying GRACE in monitoring groundwater resources in hydrologically complex regions that are undersampled and where policies limit data accessibility.
5 Bhave, A. G.; Bulcock, L.; Dessai, S.; Conway, D.; Jewitt, G.; Dougill, A. J.; Kolusu, S. R.; Mkwambisi, D. 2020. Lake Malawi’s threshold behaviour: a stakeholder-informed model to simulate sensitivity to climate change. Journal of Hydrology, 584:124671. (Online first) [doi: https://doi.org/10.1016/j.jhydrol.2020.124671]
Climate change ; Hydrology ; Forecasting ; Models ; Water resources ; Water balance ; Rain ; Stakeholders ; Reservoirs ; Rivers ; Lakes ; Catchment areas / Malawi / United Republic of Tanzania / Mozambique / Lake Malawi / Shire River
(Location: IWMI HQ Call no: e-copy only Record No: H049529)
(2.06 MB)
Over 90% of Malawi’s electricity generation and irrigation depend on Lake Malawi outflows into the Shire River. Recent lake level declines have raised concerns over future climate change impacts, including the risk of no outflows if the Lake Malawi Outflow Threshold (LMOT) is passed. Addressing calls for model co-production, we iteratively engage stakeholders in data collection, and eliciting local system insights and management priorities, to inform the development of a Water Evaluation And Planning (WEAP) model for the Lake Malawi Shire River Basin. We use a simple model setup and manual calibration to allow for data sparsity and limited documentation of historical management decisions. The model satisfactorily captures limited observed streamflow patterns of Lake Malawi tributaries and lake level variations for the period 1960–2009, however, small errors in lake level simulation significantly affect simulation of monthly outflows. The riparian countries, Malawi, Tanzania and Mozambique contribute approximately 55%, 41% and 4% respectively to lake inflows (1960–2009 average). Forced with 29 bias-corrected global climate model projections (2021–2050) and assuming no change in current operating rules of key infrastructure, the WEAP model simulates wide-ranging changes. These include much higher lake levels that would cause downstream floods, and much lower lake levels, including 11 projections that fall below the LMOT. Both outcomes would have major implications for downstream hydropower and irrigation. Future water management plans require identification and evaluation of strategies that can address multi-year shifts in lake levels and the uncertainty inherent in future climate and hydrological model outputs.
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