Lake Victoria: derivation of a corrected natural water level series /<i>Lac Victoria: dérivation d'une série naturelle corrigée des niveaux d'eau</i>

Sutcliffe, J. V.; Petersen, G.

doi:10.1623/hysj.52.6.1316

Cited by 70 publications

(41 citation statements)

References 4 publications

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“…This rate of decline was about 50% less than the observed rate of decline. These findings were similar with the findings for Lake Victoria reported by Sutcliffe and Petersen () who found that the observed lake levels declined, but the reconstructed lake levels remained unaltered if abstractions from a power plant station were excluded from the water balance.…”

Section: Discussionmentioning

confidence: 99%

Characterisation of hydroclimatological trends and variability in the Lake Naivasha basin, Kenya

Odongo¹,

Tol²,

Oel³

et al. 2015

Hydrological Processes

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Recent hydro‐climatological trends and variability characteristics were investigated for the Lake Naivasha basin with the aim of understanding the changes in water balance components and their evolution over the past 50 years. Using a Bayesian change point analysis and modified Mann–Kendall tests, time series of annual mean, maximum, minimum, and seasonal precipitation and flow, as well as annual mean lake volumes, were analysed for the period 1960–2010 to uncover possible abrupt shifts and gradual trends. Double cumulative curve analysis was used to investigate the changes in hydrological response attributable to either human influence or climatic variability. The results indicate a significant decline in lake volumes at a mean rate of 9.35 × 106 m3 year−1. Most of the river gauging stations showed no evidence of trends in the annual mean and maximum flows as well as seasonal flows. Annual minimum flows, however, showed abrupt shifts and significant (upward/downward) trends at the main outlet stations. Precipitation in the basin showed no evidence of abrupt shifts, but a few stations showed gradual decline. The observed changes in precipitation could not explain the decline in both minimum flows and lake volumes. The findings show no evidence of any impact of climate change for the Lake Naivasha basin over the past 50 years. This implies that other factors, such as changes in land cover and infrastructure development, have been responsible for the observed changes in streamflow and lake volumes. Copyright © 2015 John Wiley & Sons, Ltd.

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Section: Discussionmentioning

confidence: 99%

Characterisation of hydroclimatological trends and variability in the Lake Naivasha basin, Kenya

Odongo¹,

Tol²,

Oel³

et al. 2015

Hydrological Processes

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“…The White Nile's main water source is Lake Victoria, which gains more than 80% of its water from direct rainfall (Di Baldassare et al, 2011). The Lake's level has exhibited high variability in response to rainfall variation and extreme rainfall events (Conway, Allison, Felstead, & Goulden, 2005) and also more recently due to management factors, such as regulation of lake outflows for electricity generation (Conway, 2005;Sutcliffe & Petersen, 2007). The other 20% of the water inputs to the lake derive from tributary inflows, including the Kagera and Mara Rivers.…”

Section: Climate Change and Water Resources In The Equatorial Nile Basinmentioning

confidence: 99%

Evolving Discourses on Water Resource Management and Climate Change in the Equatorial Nile Basin

Hissen¹,

Conway

Goulden

2017

The Journal of Environment & Development

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Transboundary water resources management in the Equatorial Nile Basin (EQNB) is a politically contested issue. There is a growing body of literature examining water-related discourses which identifies the ability of powerful actors and institutions to influence policy. Concern about the effects of future climate change has featured strongly in research on the Nile River for several decades. It is therefore timely to consider whether and how these concerns are reflected in regional policy documents and policy discourse. This study analyzes discourse framings of water resources management and climate change in policy documents (27, published between 2001 and 2013) and as elicited in interviews (38) with water managers in the EQNB. Three main discursive framings are identified which are present in the discourses on both subjects: a problem-oriented environmental risk frame and two solution-oriented frames, on governance and infrastructure development. Climate change discourse only emerges as a common topic around 2007. The framings found in the water resources management discourse and the climate change discourse are almost identical, suggesting that discursive framings were adopted from the former for use in the latter. We infer that the climate change discourse may have offered a less politically sensitive route to circumvent political sensitivities around water allocation and distribution between riparian countries in the EQNB. However, the climate change discourse does not offer a lasting solution to the more fundamental political dispute over water allocation. Moreover, in cases where the climate change discourse is subsumed within a water resources management discourse, there are dangers that it will not fully address the needs of effective adaptation

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“…Severe droughts occur approximately every 3-4 years during the short rains, every 7-8 years during the hot dry season (December, January, and February), and every 5-8 years during the long rainy season (Awange et al 2008). Lake Victoria is mainly rain-fed with direct precipitation accounting for approximately 80% of the water inflow to the lake (Sutcliffe and Petersen 2007), and about 10% coming from five main tributaries, with the Kagera River being the main contributor. The remaining 10% comes from various small tributaries.…”

Section: The Study Area and Data Set Descriptionsmentioning

confidence: 99%

Hydro-climatic trends and water resource management implications based on multi-scale data for the Lake Victoria region, Kenya

Koutsouris¹,

Destouni

Jarsjö³

et al. 2010

Environ. Res. Lett.

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Unreliable rainfall may be a main cause of poverty in rural areas, such as the Kisumu district by Lake Victoria in Kenya. Climate change may further increase the negative effects of rainfall uncertainty. These effects could be mitigated to some extent through improved and adaptive water resource management and planning, which relies on our interpretations and projections of the coupled hydro-climatic system behaviour and its development trends. In order to identify and quantify the main differences and consistencies among such hydro-climatic assessments, this study investigates trends and exemplifies their use for important water management decisions for the Lake Victoria drainage basin (LVDB), based on local scale data for the Orongo village in the Kisumu district, and regional scale data for the whole LVDB. Results show low correlation between locally and regionally observed hydro-climatic trends, and large differences, which in turn affects assessments of important water resource management parameters. However, both data scales converge in indicating that observed local and regional hydrological discharge trends are primarily driven by local and regional water use and land use changes.

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Lake Victoria: derivation of a corrected natural water level series /Lac Victoria: dérivation d'une série naturelle corrigée des niveaux d'eau

Cited by 70 publications

References 4 publications

Characterisation of hydroclimatological trends and variability in the Lake Naivasha basin, Kenya

Characterisation of hydroclimatological trends and variability in the Lake Naivasha basin, Kenya

Evolving Discourses on Water Resource Management and Climate Change in the Equatorial Nile Basin

Hydro-climatic trends and water resource management implications based on multi-scale data for the Lake Victoria region, Kenya

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