Implications of Rapid Urban Sprawl towards Water Resources Management: The case of lake Babati, Tanzania (original) (raw)
Related papers
Assessment of Urbanization Implications in Water Management around Lake Victoria: Case Study Mwanza
Journal of Water Resources, Engineering, Management and Policy
This study assesses urbanization implications in water management around Lake Victoria in Mwanza. The study was conducted in Nyamagana and Misungwi districts by the use of data collected from April 2020 to June 2021. A total of 200 respondents participated in this study. The findings showed that, urbanization which is associated with various socio-economic activities caused destruction and pollution of water sources and the general ecosystem around Lake Victoria ecosystem. It concluded that, there was a direct relationship between urbanizations, pollution and degradation of the physical environment around Lake Victoria. The study recommended that land use plan and management must be applied to mobilize, facilitate and motivate local community based groups for participatory waste and overall water and land resources management around Lake Victoria basin
Environmental & Socio-economic Studies
Several urban centres of different sizes have developed over time, and continue to grow, within the basin of Lake Victoria. Uncontrolled urban development, especially along the lake shore, puts environmental pressure on Lake Victoria and its local ecosystem. This study sought to monitor the extent and impacts of urban development (as measured by population growth and built-up land use/land cover) in the Lake Victoria basin, Kenya, between 1978 and 2018. Remote sensing and GIS-based land use/land cover classification was conducted to extract change in built-up areas from Landsat 3, 4, 5 and 8 satellite imagery obtained for the month of January at intervals of ten years. Change in population distribution and density was analysed based on decadal census data from the Kenya National Bureau of Statistics between 1979 and 2019. A statistical regression model was then estimated to relate population growth to built-up area expansion. Results indicate that the basin’s built-up area has expan...
Water bodies have played a vital role in the growth and development of human society. Currently these water bodies are under tremendous pressure due to rapid urbanization. The ponds, lakes and reservoirs, across the country, are in varying degrees of environmental degradation due to various human activities. In this context a study was carried out in South Dum Dum (Ward no. 8 and 9), covering an area of about 17.39 sq. km to identify the impact of expanding urbanization process on water bodies. Different qualitative and quantitative methods were used to study and analyse the rate of urbanization and depletion of water bodies. The result of the study shows that with an increasing rate of urbanization, there have been considerable reductions in the number of water bodies in the area. The study also tries to provide vital clues towards understanding the main reasons behind the rapid shrinkage of water bodies within a rapidly urbanization region. An attempt has also been made to suggest measures for conservation and proper management of the existing water bodies through peoples’ participation and implementation of stringent laws.
Sustainability
Recent history has been marked by a shift from rural to urban living. Studies show that urbanization is most prevalent at coastal areas and river basins and these are the locations where most megacities are established. However, in the African context, there is a deficit of research in this area. The focus of studies in the ‘urban’ field show the expansion of cities towards waterbodies but with little or no attention to the implications of this expansion—‘the rural to urban shift’—particularly as they concern lakes as commons in a rapidly urbanizing world, such as African countries and the Global South. Thus, using the case of lakes in Ethiopia, this study explores the trend of urbanization vis-à-vis lakes and its implications for the management of lakes, where historically the Ethiopian urban system has been characterized by settlements on mountain areas as strategic places located far from water bodies, particularly lakes. Using secondary data on population of urban centers and di...
An Assessment of Changes in Land-Use and Land-Cover within the Kiri Lake, Nigeria (1976-2014
This paper assesses the land-use and land-cover changes within the Kiri lake basin between 1976 and 2014-a period of 38 years, using remotely sensed data and geographic information systems (GIS). Since 1982 when the Gongola River was impounded and Kiri Lake created, various anthropogenic activities such as agriculture, irrigation, deforestation, fishing, and construction have taken place. The cumulating of these human activities together with natural factors has led to environmental degradation and the damage of the ecosystem of the lake basin. Landsat MSS image of 1976, Landsat TM of 1986 and Landsat ETM+ images of 1991 and 2014 were acquired, classified and analysed between 1976 and 2014. Area calculations of the arc GIS 10.2.2 software were used to derive the trends, rates and magnitudes of changes, while map overlay was employed for assessing the nature and location where the changes have taken place. The study reveals that the rate of deforestation and erosion in the study area is linked to the methods of farming practices as well as the removal of the catchment vegetation as part of land preparation. Uncontrolled human settlement and demand for fuel wood etc., was another issue to contend with. If this issue of land degradation is not appropriately dealt with in the future, it could lead to the decrease in the power generating capacity of the proposed hydropower component due to filling up with silt materials and the ultimate shortening of the life span of the dam. Finally, it is hoped that the findings from the study will provide useful insight into the current state of the environment, and the recommendations proposed in this paper would equally be helpful to mitigate, control and to improve the management of the basin.
Environmental Management and Sustainable Development
Urbanization causes changes in social and environmental conditions with most of these changes impacting on the efficient provision of essential services such as water and sanitation. Nakuru Municipality was observed to be the fastest growing urban area in East and Central Africa. Research on patterns and trends of urban and population increase and their implication on water service provision and sanitation in urban Nakuru is very scanty. This paper presents findings from an assessment of the effects of population growth between 1999 and 2017 on urban extent and supply of water and sewage reticulation in Nakuru municipality and surrounding peri-urban areas. Data was collected through remote sensing and administration of questionnaires to urban Nakuru residents and key informants from NAWASSCO respectively to elicit information on the water supply network and sewerage reticulation in Nakuru municipality for the period 1989-2014. Geographic Information System (GIS) was used to analyze ...
2021
Received: 28 January 2021 Accepted: 30 March 2021 The socio-economic and ecological value of Lake Victoria is threatened by significant regional development and urbanization. This study analyzed spatial-temporal land use/land cover changes in the Kenyan Lake Victoria basin from 1978–2018 using Landsat 3, 4-5 and 8 imagery, with a view to identifying the extent and potential impacts of urbanization on the basin. Supervised image classification was undertaken following the Maximum Likelihood algorithm to generate land use/land cover maps at ten-year intervals. Results indicate that the basin is characterized by six main land use/land cover classes namely, agricultural land, water bodies, grasslands and vegetation, bare land, forests and built-up areas. Further, the results indicate that the basin has experienced net increases in built-up areas (+97.56%), forests (+17.30%) and agricultural land (+3.54%) over the last 40 years. During the same period, it experienced net losses in grassl...
Zambia’s urban population is growing dramatically, driven by perceptions of better economic opportunities, infrastructure and services in urban areas. Water supply services, sanitation and other social amenities provision in urban areas like Lusaka, Kitwe, Livingstone and Ndola are getting overwhelmed and growth gauging from poorly planned residential settlements, growing energy demand, housing, poor road infrastructure accompanied by traffic jams have compounded the failure by local authorities and utility firms to cope with the demands of the rapidly increasing population. Due to high public demand for water, the water supply commercial utility companies fail to meet the consumption demand. It is from this view point that this research was conducted. The main objective was to assess the impact of increasing population on water quality in Kitwe - Zambia. It has been concluded that both surface and groundwater is being polluted due to anthropogenic activities in the concerned town. The findings also point to that fact that water quality can be affected by increasing population.
Sustainability
Catchments for aquatic ecosystems connect to the water quality of those waterbodies. Land use land cover change activities in the catchments, therefore, play a significant role in determining the water quality of the waterbodies. Research on the relationship between land use and land cover changes and water quality has gained global prominence. Therefore, this study aimed at determining land use, land cover changes in the catchments of L. Kyoga basin, and assessing their connectedness to the lake’s water quality. The GIS software was used to determine eight major land use and land cover changes for 2000, 2010, and 2020. Meanwhile, water quality data was obtained through both secondary and primary sources. Spearman correlation statistical tool in SPSS was used to correlate the land use, land cover changes, and water quality changes over the two-decade study period. The results showed that different land use and land cover activities strongly correlated with particular water quality p...
International Journal of Environment and Climate Change
The world is facing an unprecedented population increase in coastal areas. This situation is mainly the result of human migration. The population increase has multiplier effects on the environment and development. In Kigamboni Municipality, land-use changes have been witnessed and new expansions, including agricultural, commercial, industrial and urban-related expansions, happen every day. Thus, this study investigates the impact of population growth on the environment and the local people’s livelihoods in Kigamboni. Land-use/land-cover (LULC) changes were quantified using satellite images. In addition, a total of 156 respondents were randomly selected from four sub-wards in the municipality. Primary data were collected using a structured questionnaire, in-depth interviews, observations and focus group discussions (FGDs). Remote sensing techniques were used to map the spatial and temporal variation of the area between 1995 and 2021 by using a Supervised Classification method in Rand...