The quantification of the extent of flooding on selected major Afrotropical lakes to guide management implications

The extent of flooding in vulnerable inland and lacustrine systems can demonstrate the coverage and the magnitude of such phenomenon for policy enhancement. This study examined the extent of flooding due to rising water levels in selected Afrotropical lakes to guide interventions that would sustain the livelihoods of communities affected. The years that were most prone to flooding (2010 and 2020) were used as a baseline in the extraction of changes in spatial extent and area of lacustrine shoreline, and rainfall and satellite altimetry data, using geospatial and remote sensing technologies. The extent of flooding was strongly but insignificantly related (R 2 = 0.63; p = 0.07) to the sizes of the studied lakes and the amount of rainfall. Lakes with the smallest surface areas such as Baringo and Naivasha showed the greatest increase in flooding of 52.63% and 42.62%, respectively. Larger lakes such as Lakes Victoria (1.05%), Turkana (3.77%), and Tanganyika (0.07%) had the lowest increases in areal extent. Furthermore, the topography of the lakes studied further determined the residence time and the extent of flooding, such that lakes such as Edward (−0.09%) and Rukwa (−3.25%) receded during the period when other lakes were flooding. The information and data presented here provides the most up-to-date quantification of flooding to support adaptation strategies for inland lake systems and guide policy implementation.

[1]  A. Roegner,et al.  Mind the gaps for the best practices: Enhancing the management of Lake Victoria fisheries resources , 2022, Lakes & Reservoirs: Science, Policy and Management for Sustainable Use.

[2]  J. Snoeks,et al.  From a pair to a dozen: the piscivorous species of Haplochromis (Cichlidae) from the Lake Edward system , 2022, European Journal of Taxonomy.

[3]  Paul Gérard Gbetkom,et al.  Water Resources in Africa under Global Change: Monitoring Surface Waters from Space , 2022, Surveys in Geophysics.

[4]  K. Aryal,et al.  Semi-automatic classification for rapid delineation of the geohazard-prone areas using Sentinel-2 satellite imagery , 2022, SN Applied Sciences.

[5]  Kevin Kelly.  Geographic Coordinate Systems , 2022, Geographic Information Science & Technology Body of Knowledge.

[6]  S. Mogren,et al.  A high-resolution gravimetric geoid model for Kingdom of Saudi Arabia , 2021, Survey Review.

[7]  M. Herrnegger,et al.  Hydroclimatic Analysis of Rising Water Levels in the Great Rift Valley Lakes of Kenya , 2021, Journal of Hydrology: Regional Studies.

[8]  V. Natugonza,et al.  A century of drastic change: Human-induced changes of Lake Victoria fisheries and ecology , 2020 .

[9]  C. Nyamweya,et al.  Consequences of calamities and their management: The case of COVID-19 pandemic and flooding on inland capture fisheries in Kenya , 2020, Journal of Great Lakes Research.

[10]  J. Evans,et al.  Evaluating Precipitation Datasets Using Surface Water and Energy Budget Closure , 2020, Journal of Hydrometeorology.

[11]  S. El-Kafrawy,et al.  Applications of remote sensing and GIS techniques to evaluate the effectiveness of coastal structures along Burullus headland-Eastern Nile Delta, Egypt , 2020 .

[12]  W. Leal.  Handbook of Climate Change Resilience , 2020 .

[13]  J. Snoeks,et al.  Where ichthyofaunal provinces meet: the fish fauna of the Lake Edward system, East Africa. , 2020, Journal of fish biology.

[14]  J. Mills,et al.  Building Resilience of Urban Ecosystems and Communities to Sea-Level Rise: Jamaica Bay, New York City , 2019, Handbook of Climate Change Resilience.

[15]  G. Zeng,et al.  Effects of dam construction on biodiversity: A review , 2019, Journal of Cleaner Production.

[16]  A. Mabulla,et al.  Geochronology and technological development: the microscopic and metric evidence from middle stone age (MSA) points at mumba rock-shelter, northern tanzania , 2017 .

[17]  J. M. Shawn Hutchinson,et al.  Analysis of publication trends in ecosystem services research , 2017 .

[18]  Michael G. Bosilovich,et al.  Atmospheric Water Balance and Variability in the MERRA-2 Reanalysis , 2017 .

[19]  Daniel K. Masiga,et al.  Impact of Short-Term Flooding on Livelihoods in the Kenya Rift Valley Lakes , 2016 .

[20]  Robert Arlinghaus,et al.  On the sustainability of inland fisheries: Finding a future for the forgotten , 2016, Ambio.

[21]  L. Gallardo,et al.  Climate services: Lessons learned and future prospects , 2016 .

[22]  P. Abuom,et al.  Influence of Artisanal fishing Gears on Physico-Chemical Parameters of Ferguson’s Gulf in Lake Turkana, Kenya , 2015 .

[23]  W. Taylor,et al.  Inland capture fishery contributions to global food security and threats to their future , 2014 .

[24]  Peter Bauer-Gottwein,et al.  Enabling the Use of Earth Observation Data for Integrated Water Resource Management in Africa with the Water Observation and Information System , 2014, Remote. Sens..

[25]  C. Vaughan,et al.  Climate services for society: origins, institutional arrangements, and design elements for an evaluation framework , 2014, Wiley interdisciplinary reviews. Climate change.

[26]  C. Corvalan,et al.  Climate Services to Improve Public Health , 2014, International journal of environmental research and public health.

[27]  R Core Team,et al.  R: A language and environment for statistical computing. , 2014 .

[28]  A. Taabu-Munyaho,et al.  Can protected areas work in artisanal fisheries of Uganda? The case of Lakes Edward-George and Kazinga Channel , 2014 .

[29]  Frank O. Masese,et al.  Biomonitoring as a prerequisite for sustainable water resources: a review of current status, opportunities and challenges to scaling up in East Africa , 2013 .

[30]  S. Gualdi,et al.  Overview of the Main International Climate Services , 2012 .

[31]  P. Zwieten,et al.  Relative lake level fluctuations and their influence on productivity and resilience in tropical lakes and reservoirs , 2012 .

[32]  Y. Mgaya,et al.  To connect or not to connect? Floods, fisheries and livelihoods in the Lower Rufiji floodplain lakes, Tanzania , 2011 .

[33]  Z. Getenga,et al.  The Impact of Land Use Activities on Vegetation Cover and Water Quality in the Lake Victoria Watershed , 2011 .

[34]  D. Scott,et al.  Climate services to support sustainable tourism and adaptation to climate change , 2011 .

[35]  Saurabh Prasad,et al.  Decision-Level Fusion of Spectral Reflectance and Derivative Information for Robust Hyperspectral Land Cover Classification , 2010, IEEE Transactions on Geoscience and Remote Sensing.

[36]  Jason P. Antenucci,et al.  Processes affecting horizontal mixing and dispersion in Winam Gulf, Lake Victoria , 2010 .

[37]  Richard Grenyer,et al.  Priority research areas for ecosystem services in a changing world , 2009 .

[38]  R. Britton,et al.  Economic Gain versus Ecological Damage from the Introduction of Non-native Freshwater Fish: Case Studies from Kenya , 2008 .

[39]  M. Shafer.  Climate Literacy and a National Climate Service , 2008 .

[40]  R. Nicholls,et al.  Towards Successful Adaptation to Sea-Level Rise along Europe's Coasts , 2008 .

[41]  R. Welcomme,et al.  World prospects for floodplain fisheries , 2008 .

[42]  F. Diez-Martín,et al.  New Excavations at Mumba Rockshelter, Tanzania , 2007 .

[43]  J. Jordan,et al.  LAKE LEVEL STUDIES | Overview , 2007 .

[44]  S. Carpenter,et al.  Millennium Ecosystem Assessment: Research Needs , 2006, Science.

[45]  W. Steffen,et al.  Global Change and the Earth System: A Planet Under Pressure , 2005 .

[46]  C. Revenga,et al.  Fragmentation and Flow Regulation of the World's Large River Systems , 2005, Science.

[47]  I. Kimirei,et al.  Phytoplankton pigments and community composition in Lake Tanganyika , 2005 .

[48]  W. Vyverman,et al.  Phytoplankton in Lake Tanganyika: a Comparison of Community Composition and Biomass off Kigoma with Previous Studies 27 Years Ago , 2005 .

[49]  William F. Manley,et al.  A GIS-based reconstruction of late Quaternary paleohydrology: Lake Eyre, arid central Australia , 2004 .

[50]  D. Olago,et al.  Mitigation of Environmental Problems in Lake Victoria, East Africa: Causal Chain and Policy Options Analyses , 2004, Ambio.

[51]  David M. Harper,et al.  Phosphorus inputs to Lake Naivasha, Kenya, from its catchment and the trophic state of the lake , 2002, Hydrobiologia.

[52]  M. Zalewski,et al.  The dependence of fish community structure and dynamics on floodplain and riparian ecotone zone in Parana River, Brazil , 1995, Hydrobiologia.

[53]  M. Strecker,et al.  East African climate change and orbital forcing during the last 175 kyr BP , 2003 .

[54]  P. Plisnier,et al.  Origin of intraseasonal variability in Lake Tanganyika , 2002 .

[55]  W. Junk.  Long-term environmental trends and the future of tropical wetlands , 2002, Environmental Conservation.

[56]  John A. Dutton,et al.  OPPORTUNITIES AND PRIORITIES IN A NEW ERA FOR WEATHER AND CLIMATE SERVICES , 2002 .

[57]  M. Rosegrant,et al.  Fish as Food: Projections to 2020 , 2002 .

[58]  Anny Cazenave,et al.  Interannual lake level fluctuations (1993–1999) in Africa from Topex/Poseidon: connections with ocean–atmosphere interactions over the Indian Ocean , 2002 .

[59]  P. Aloo.  Effects of Climate and Human Activities on the Ecosystem of Lake Baringo, Kenya , 2002 .

[60]  Ruth M. Doherty,et al.  African climate change: 1900-2100 , 2001 .

[61]  Lewis Publishers.  Basics of Remote Sensing , 2001 .

[62]  F. Gasse.  Hydrological changes in the African tropics since the Last Glacial Maximum , 2000 .

[63]  Charon Birkett,et al.  Indian Ocean Climate event brings floods to East Africa's lakes and the Sudd Marsh , 1999 .

[64]  S. Nicholson.  Historical and Modern Fluctuations of Lakes Tanganyika and Rukwa and Their Relationship to Rainfall Variability , 1999 .

[65]  C. G. Rapley,et al.  The response of lake levels and areas to climatic change , 1994 .

[66]  E. Barbier.  Valuing Environmental Functions: Tropical Wetlands , 1994 .

[67]  S. Harrison,et al.  European lakes as palaeohydrological and palaeoclimatic indicators , 1993 .

[68]  W. Junk.  The flood pulse concept in river-floodplain systems , 1989 .

[69]  A. T. Grove,et al.  Global Maps of Lake-Level Fluctuations since 30,000 yr B.P. , 1979, Quaternary Research.

[70]  A. T. Grove,et al.  Environmental and climatic implications of late Quaternary lake-level fluctuations in Africa , 1976, Nature.

[71]  D. H. Eccles.  MASS MORTALITIES OF LATES (PISCES: CENTROPOMIDAE) IN LAKE ALBERT , 1976 .

[72]  H. Mörth.  Investigation into the meteorological aspects of the variations in the level of Lake Victoria , 1967 .

[73]  R. Odingo.  The Abnormal and unseasonal rains in East Africa , 1962 .