The paper investigates the role of irrigation in developing agriculture in Senegal, focusing on the PARIIS project in the Fatick region. It assesses the added value of irrigation by examining agricultural production levels and income generated among primarily female beneficiaries. The study finds that irrigation significantly increased production and consequently raised the income of all producers. Additional benefits include time savings, improved health conditions, and the ability for benefici...

Culture  Hydrology  Natural Geography  Economics  Entrepreneurship  Environmental Sciences 

Regime shifts, abrupt switches between alternate states of ecosystems, have repeatedly been described for marine fisheries, but little evidence exists for regime shifts in freshwater fisheries systems. A 41-year long time series (from 1965 until 2005) of fisheries yielded 17 fish species, dried fish and miscellaneous species from Kaptai reservoir, Bangladesh, which were analyzed to detect major trends in fish assemblage composition. Annual rates of supplemental stocking were included to elucidat...

Hydrology 

Unsaturated Flow Drying Beds effectively treat septic sludge from septic tanks. However, the sustainability of this purification process depends on the organic load applied and the availability of oxygen. To guarantee this sustainability, a flow model in an unsaturated medium coupled with the variation of the biofilm was developed. The calibration, validation, and comparison of experimental and simulation results were carried out on the basis of the NASH criterion. The experimental results show ...

Hydrology 

Dams offer numerous benefits to society, but their failure can lead to cata-strophic floods, causing severe damage to both people and property. Simulating dam break events and subsequent floods is essential for understanding and mitigating the risks associated with potential dam failures. In this study, three different models have been tested with the newly available HEC-RAS 6.5 model, which is freely available to the community. In this model, three models with varying dimensionality 1D, 1D/2D c...

Hydrology 

Water from the shallow wells is at risk of pollution due to agricultural activities through surface runoff carrying feacal matter, herbicides, pesticides and fertilizers. This study looks at the status of the drinking water quality of the shallow wells in Kipsonoi Sub Catchment and its suitability for human consumption. The study objectives are: To determine the basic physical, chemical and biological indicator parameters in shallow wells in the Kipsonoi Sub catchment. Water samples from 31 shal...

Hydrology 

Despite the alarming situation of the waste generated by street food services, their WTP is also reported to be low, which makes waste management more challenging, especially in developing countries, particularly Tanzania. This study analyzes the factors influencing willingness to pay for improved waste management in Mzumbe ward, Morogoro District. A quantitative, cross-sectional study was used to obtain a sample of 196 food vendors in the Mzumbe ward. The study questionnaires for data collectio...

Hydrology 

Temporal variation of rainfall has a direct influence on discharge of a river; however, considerable land cover changes through conversion of natural vegetation to agricultural land, settlement and commercial usage like urbanization have led to encroachment into forested, river riparian and other wetland areas therefore altering runoff generation through variation of rates of vegetal interception, infiltration, evapotranspiration and surface detention. This study determined rainfall trends and d...

Hydrology 

The increasing demand for water resources, decreased land water availability, and concerns about food security have led to the development of innovative food production methods, such as aquaponics. Fish tank organic waste is fed to plants for growth, with perforated water returning to fish, reducing water consumption and reusing water compared to traditional agricultural practices. This hybrid technology combines aquaculture with hydroponics, requiring constant monitoring of water quality parame...

Hydrology 

Overexploitation of water supplies remains the most serious constraint on its sustainability, and many authorities are confronting serious problems in its management because of growing competition for the ever-dwindling natural resource. The study aims to assess the supply and demand for water in the Walatsi sub-catchment from 2022 to 2030. Data from key informants, experiment, direct observations, and GIS analyses were utilized and analyzed through QGIS software and Microsoft Excel, and a decis...

Hydrology  Geography 

The Medjerda Basin is a crucial hub in Tunisia, grapples with recurring floods, significantly affecting social and economic activities in the region. Flood-induced damages disrupt daily life, jeopardizing homes, agriculture, and businesses. This study delves into the intricate dynamics of hydraulic engineering within the challenging context of the Medjerda River Basin, responding to the global flood crisis. This study investigates channel response under diverse flow scenarios. It employs a novel...

Hydrology