Your search found 16 records
1 Savenije, H. H. G.. 1993. A framework for analysis to enhance efficiency in agricultural and urban water use. In FAO, Integrated rural water management. Proceedings of the Technical Consultation on Integrated Rural Water Management, Rome, Italy, 15-19 March 1993. Rome, Italy: FAO. pp.37-44.
(Location: IWMI-HQ Call no: 333.91 G000 FAO Record No: H014138)
2 Savenije, H. H. G.. 1998. How do we feed a growing world population in a situation of water scarcity? In Stockholm International Water Institute, Proceedings, Stockholm Water Symposium, Stockholm, August 10-13, 1998: Water - The key to socio-economic development and quality of life. Stockholm, Sweden: SIWI. pp.49-58.
(Location: IWMI-HQ Call no: 333.91 G000 STO Record No: H023909)
3 Savenije, H. H. G.; van der Zaag, P. 2000. Conceptual framework for the management of shared river basins: With special reference to the SADC and EU. Water Policy, 2(1-2):9-45.
River basins ; Catchment areas ; Water availability ; Water resource management ; International cooperation ; Legal aspects ; Institutions ; Decentralization ; Organizations ; Economic aspects ; Flood control ; Social participation / Southern Africa
(Location: IWMI-HQ Call no: PER Record No: H026049)
4 van der Zaag, P.; Savenije, H. H. G.. 2000. Towards improved management of shared river basins: Lessons from the Maseru Conference. Water Policy, 2(1-2):47-63.
River basins ; Water resource management ; International cooperation ; Conferences ; Political aspects ; Legal aspects
(Location: IWMI-HQ Call no: PER Record No: H026050)
5 Savenije, H. H. G.; van der Zaag, P. 2002. Water as an economic good and demand management paradigms with pitfalls. Water International, 27(1):98-104.
Water management ; Water demand ; Water allocation ; Economic aspects ; Pricing ; Cost recovery ; User charges ; Water supply ; Poverty
(Location: IWMI-HQ Call no: PER Record No: H029978)
6 van der Zaag, P.; Seyam, I. M.; Savenije, H. H. G.. 2002. Towards measurable criteria for the equitable sharing of international water resources. Water Policy, 4(1):19-32.
(Location: IWMI-HQ Call no: PER Record No: H030189)
(0.85 MB)
7 Savenije, H. H. G.. 2003. The width of a bankfull channel: Laceys formula explained. Journal of Hydrology, 276:176-183.
(Location: IWMI-HQ Call no: e-copy only Record No: H031540)
8 Mohamed, Y. A.; Bastiaanssen, W. G. M.; Savenije, H. H. G.. 2004. Spatial variability of evaporation and moisture storage in the swamps of the upper Nile studied by remote sensing techniques. Journal of Hydrology, 289:145-164.
River basins ; Swamps ; Evaporation ; Soil moisture ; Water balance ; Catchment areas ; Models / Africa / Nile Basin / Sudd / Bahr el Ghazal / Sobat
(Location: IWMI-HQ Call no: P 6770 Record No: H034265)
9 Hoekstra, A. Y.; Savenije, H. H. G.; Chapagain, A. K. 2004. The value of rainfall: Upscaling economic benefits to the catchment scale. In SIWI, Proceedings, SIWI Seminar - Towards Catchment Hydrosolidarity in a World of Uncertainties, Stockholm, August 16, 2003. Stockholm, Sweden: SIWI. pp.63-68.
(Location: IWMI-HQ Call no: 333.91 G000 SIW Record No: H034550)
10 Chapagain, A. K.; Hoekstra, A. Y.; Savenije, H. H. G.; Gautam, R. 2005. The water footprint of cotton consumption. Delft, Netherlands: UNESCO. Institute for Water Education. 39p. (Value of water research report series no.18)
(Location: IWMI-HQ Call no: 633.51 G000 CHA Record No: H037686)
11 Ngigi, S. N.; Savenije, H. H. G.; Thome, J. N.; Rockström, J.; Penning de Vries, Frits W. T. 2005. Agro-hydrological evaluation of on-farm rainwater storage systems for supplemental irrigation in Laikipia district, Kenya. Agricultural Water Management, 73(1):21-41.
Water storage ; Rain ; Water harvesting ; Soil moisture ; Supplementary irrigation ; Irrigation requirements ; Drip irrigation ; Vegetables ; Water balance ; Analysis ; Runoff ; Seepage ; Cost benefit analysis / Kenya
(Location: IWMI-HQ Call no: IWMI 631.7.1 G140 NGI Record No: H035927)
(0.36 MB)
12 Ngigi, S. N.; Savenije, H. H. G.; Gichuki, Francis. 2007. Land use changes and hydrological impacts related to up-scaling of rainwater harvesting and management in upper Ewaso Ng’iro River Basin, Kenya. Land Use Policy, 24:(1)129-140.
Land use ; Policy ; River basins ; Rainfall-runoff relationships ; Hydrology ; Models ; Water resource management ; Water balance / Kenya / Ewaso Ng’iro River Basin
(Location: IWMI-HQ Call no: IWMI 333.91 G140 NGI Record No: H038184)
13 Mazvimavi, D.; Meijerink, A. M. J.; Savenije, H H. G.; Stein, A. 2005. Prediction of flow characteristics using multiple regression and neural networks: A case study in Zimbabwe. Physics and Chemistry of the Earth, 30:639-647.
(Location: IWMI HQ Call no: P 8020 Record No: H040025)
14 Mohamed, Y. A.; Bastiaanssen, W. G. M.; Savenije, H. H. G.; van den Hurk, B. J. J. M.; Finlayson, Max C. 2012. Wetland versus open water evaporation: an analysis and literature review. Physics and Chemistry of the Earth, 47-48:114-121. [doi: https://doi.org/10.1016/j.pce.2011.08.005]
Wetlands ; Evaporation ; Evapotranspiration ; Literature reviews ; Vegetation ; Climate change ; Water balance
(Location: IWMI HQ Call no: e-copy only Record No: H045933)
(1.33 MB)
Is the total evaporation from a wetland surface (including: open water evaporation, plant transpiration and wet/dry soil evaporation) similar, lower, or higher than evaporation from an open water surface under the same climatic conditions? This question has been the subject of long debate; the literature does not show a consensus. In this paper we contribute to the discussion in two steps. First, we analyse the evaporation from a wetland with emergent vegetation (Ea) versus open water evaporation (Ew) by applying the Penman–Monteith equation to identical climate input data, but with different biophysical characteristics of each surface. Second, we assess the variability of measured Ea/Ew through a literature review of selected wetlands around the globe.We demonstrate that the ratio Ea/Ew is site-specific, and a function of the biophysical properties of the wetland surface, which can also undergo temporal variability depending on local hydro-climate conditions. Second, we demonstrate that the Penman–Monteith model provides a suitable basis to interpret Ea/Ew variations. This implies that the assumption of wetland evaporation to behave similar to open water bodies is not correct. This has significant implications for the total water consumption and water allocation to wetlands in river basin management.
15 Pande, S.; Savenije, H. H. G.. 2016. A sociohydrological model for smallholder farmers in Maharashtra, India. Water Resources Research, 52(3):1923-1947. [doi: https://doi.org/10.1002/2015WR017841]
Smallholders ; Farmers ; Social aspects ; Hydrology ; Models ; Water storage ; Capital allocation ; Income ; Living standards ; Labour costs ; Remuneration ; Expenditure ; Agricultural prices ; Cotton ; Sugarcane ; Soil fertility ; Fertilizer application ; Irrigation ; Livestock production ; Grasslands ; Fodder / India / Maharashtra / Marathwada
(Location: IWMI HQ Call no: e-copy only Record No: H047760)
(1.81 MB)
We present a sociohydrological model that can help us to better understand the system dynamics of a smallholder farmer. It couples the dynamics of the six main assets of a typical smallholder farmer: water storage capacity, capital, livestock, soil fertility, grazing access, and labor. The hydroclimatic variability, which is a main driver and source of uncertainty of the smallholder system, is accounted for at subannual scale. The model incorporates rule-based adaptation mechanisms of smallholders (for example, adjusting expenditures on food and fertilizers and selling livestocks) when farmers face adverse sociohydrological conditions, such as low annual rainfall, occurrence of dry spells, or variability of input or commodity prices. We have applied the model to analyze the sociohydrology of a cash crop producing smallholder in Maharashtra, India, in a semisynthetic case study setting. Of late, this region has witnessed many suicides of farmers who could not extricate themselves out of the debt trap. These farmers lacked irrigation and were susceptible to fluctuating commodity prices and climatic variability. We studied the sensitivity of a smallholder’s capital, an indicator of smallholder well-being, to two types of cash crops (cotton and sugarcane), water storage capacity, availability of irrigation, initial capital that a smallholder starts with, prevalent wage rates, and access to grazing. We found that (i) smallholders with low water storage capacities and no irrigation are most susceptible to distress, (ii) a smallholder’s well-being is low at low wage rates, (iii) wage rate is more important than absolution of debt, (iv) well-being is sensitive to water storage capacity up to a certain level, and (v) well-being increases with increasing area available for livestock grazing. Our results indicate that government intervention to absolve the debt of farmers or to invest in local storage to buffer rainfall variability may not be enough. In addition, alternative sources of income may need to be provided, for instance by ensuring minimum wages or by providing more access to grazing areas.
16 Hulsman, P.; Savenije, H. H. G.; Hrachowitz, M. 2021. Satellite-based drought analysis in the Zambezi River Basin: was the 2019 drought the most extreme in several decades as locally perceived? Journal of Hydrology: Regional Studies, 34:100789. [doi: https://doi.org/10.1016/j.ejrh.2021.100789]
Drought ; River basins ; Reservoirs ; Water storage ; Water levels ; Precipitation ; Evaporation ; Rain ; Satellite observation ; Semiarid zones / Zambia / Zambezi River Basin / Kariba Dam
(Location: IWMI HQ Call no: e-copy only Record No: H050294)
https://www.sciencedirect.com/science/article/pii/S2214581821000185/pdfft?md5=b199f7eb1055b5e8e7be18d9d7f56f05&pid=1-s2.0-S2214581821000185-main.pdf
https://vlibrary.iwmi.org/pdf/H050294.pdf
https://vlibrary.iwmi.org/pdf/H050294.pdf
(5.53 MB) (5.53 MB)
Study region:
The study area is the river basin upstream of the Kariba dam located in the Zambezi River at the border of Zambia and Zimbabwe.
Study focus:
During the dry season of 2019 in Sub-Saharan Africa, extremely low water levels occurred in the Zambezi. According to news media, locals perceived this drought as the worst in several decades. We analyzed the 2019 drought in the Zambezi River Basin upstream of the Kariba dam to determine whether it indeed was the longest, most intense, and severe drought, in terms of precipitation, total water storage and reservoir water level observations over recent decades.
New hydrological insights for the region:
Data analysis indicates that the 2019 drought indeed had the lowest basin-averaged annual rainfall, most severe local rainfall deficit in the north of the basin, and lowest reservoir level since 1995. However, the rainfall deficit was more severe in 2002, both basin-wide and locally in the south of the basin. The total storage deficit was more severe in 2004, both basin-wide and locally in the central part of the basin. However, as the available storage data did not cover the entire deficit for 2019, its final duration and severity remain unknown. Therefore, it depends on the drought characteristic, hydrological variable, and location within the basin, whether the 2019 drought was indeed the most extreme over recent decades.
The study area is the river basin upstream of the Kariba dam located in the Zambezi River at the border of Zambia and Zimbabwe.
Study focus:
During the dry season of 2019 in Sub-Saharan Africa, extremely low water levels occurred in the Zambezi. According to news media, locals perceived this drought as the worst in several decades. We analyzed the 2019 drought in the Zambezi River Basin upstream of the Kariba dam to determine whether it indeed was the longest, most intense, and severe drought, in terms of precipitation, total water storage and reservoir water level observations over recent decades.
New hydrological insights for the region:
Data analysis indicates that the 2019 drought indeed had the lowest basin-averaged annual rainfall, most severe local rainfall deficit in the north of the basin, and lowest reservoir level since 1995. However, the rainfall deficit was more severe in 2002, both basin-wide and locally in the south of the basin. The total storage deficit was more severe in 2004, both basin-wide and locally in the central part of the basin. However, as the available storage data did not cover the entire deficit for 2019, its final duration and severity remain unknown. Therefore, it depends on the drought characteristic, hydrological variable, and location within the basin, whether the 2019 drought was indeed the most extreme over recent decades.
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