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Browsing by Author "Raude, James M."

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Analysis of drought and wet-events using swsi-based severity-duration-frequency (SDF) curves for the upper Tana River basin, Kenya

Wambua, Raphael M.; Mutua, Benedict M.; Raude, James M. (MDPI, 2018-06-12)

Drought and wet-event patterns in the Upper Tana River basin have significantly been changing due to variation of climatic and human-induced factors. This paper presents the analysis of drought and wet-events using ...
Analysis of spatial and temporal drought variability in a tropical river basin using palmer drought severity index (PDSI)

Wambua, Raphael M.; Mutua, Benedict M.; Raude, James M. (Academic journals, 2017-08-31)

Analysis of spatial and temporal drought variability in the upper Tana River basin using Palmer Drought Severity Index (PDSI) was conducted. The drought is critical for formulation of mitigation measures in the river basin. ...
Application of benchmarking and principal component analysis in measuring performance of public irrigation schemes in Kenya

Muema, Faith M.; Home, Patrick G.; Raude, James M. (MDPI, 2018-10)

The inefficient water use, and variable and low productivity in Kenyan public irrigation schemes is a major concern. It is, therefore, necessary to periodically monitor and evaluate the performance of public irrigation ...
Assessment of water flow and sedimentation processes in irrigation schemes for decision-support tool development: A case review for the Chókwè irrigation scheme, Mozambique

de Sousa, Lateiro S.; Wambua, Raphael M.; Raude, James M.; Mutua, Benedict M. (MDPI, 2019-03-06)

Water flow and sedimentation processes have been significantly erratic at the Chókwè Irrigation Scheme (CIS) and have affected its hydraulic performance. Given its expansion there is need to understand these processes ...
Bathymetry changes caused by sedimentation in an unlined canal of the Chókwè irrigation scheme, Mozambique

de Sousa, Lateiro S.; Raude, James M.; Wambua, Raphael M.; Mutua, Benedict M. (Wiley, 2022-07-14)

Bathymetric changes have been observed over the years in the Chokwè irriga- tion scheme (CIS) and little is known about their cause. This study assessed bathymetric variations that have occurred since 2001, when the ...
Characterization of temporal and spatial drought risk events using surface water supply index (SWSI) in a tropical river basin

Wambua, Raphael M.; Mutua, Benedict M.; Raude, James M. (2017-02-16)

In the present study, temporal and spatial drought-risk events are characterized using a Modified Surface Water Supply Index (SWSI) for upper Tana River basin, located in tropics, Kenya. Forty years (1970-2010) ...
Cohesive and non-uniform sediment characteristics in the unlined canal of Chókwè irrigation scheme, Mozambique

de Sousa, Lateiro Salvador; Wambua, Raphael M.; Raude, James M.; Mutua, Benedict M. (Springer, 2021-05-05)

This study sought to characterise sediments in the unlined canal in Chókwè Irrigation Scheme (CIS), during dry (DS) and wet (WS) seasons. Laboratory analysis were performed on the sediment’s soluble extracts for pH, ...
Detection of spatial, temporal and trend of meteorological drought using standardized precipitation index (spi) and effective drought index (edi) in the upper Tana river basin.

Wambua, Raphael M.; Mutua, Benedict M.; Raude, James M. (Scientific Research Publishing, 2018-07-17)

Drought events across the world are increasingly becoming a critical problem owing to its negative effects on water resources. There is need to understand on-site drought characteristics for the purpose of planning mitigation ...
Determination of discrete particles optimum design parameters for surface irrigation system settling basin

Namu, Patrick N.; Raude, James M.; Mutua, Benedict M.; Wambua, Raphael M. (2018)

Irrigated agriculture is faced with challenges that include sediment loading in the river basins and dams. The management of sediments in river basins and waterways has been an important issue for water managers throughout ...
Drought forecasting under climate change scenarios using artificial neural networks for sustainable water resources management in upper Tana River basin, Kenya

Mutua, Benedict M.; Wambua, Raphael M.; Raude, James M. (PAUWES Research-2-Practice Forum, 2018-07)

Climate change has continued to impact negatively on water resources globally. For instance, extreme weather conditions especially the drought phenomena have become frequent in Africa. This has prompted water engineers and ...
Drought forecasting using indices and artificial neural networks for upper Tana river basin, Kenya-a review concept

Wambua, Raphael M.; Mutua, Benedict M.; Raude, James M. (Peertechz Publications Private Limited, 2014)

Due to increased impact of drought on water availability at different scales there is need to understand droughts especially in upper Tana River basin which is a critical and largest water system in Kenya. There is need ...
Hydrological drought frequency estimation using stream flow drought index and modified gumbel method in upper Tana river basin

Wambua, Raphael M.; Mutua, Benedict M.; Raude, James M. (2015-11-21)

Objective: To estimate the hydrological drought frequency for upper Tana River basin in Kenya using absolute Stream flow Drought Index (SDI) and modified Gumbel technique. The frequency of drought event of a defined severity ...
Modeling tomato water productivity using aquacrop model in Njoro Sub County, Nakuru, Kenya

Sang, Hellen J.; Wambua, Raphael M.; Raude, James M. (2020-02-13)

Aims: To model tomato water productivity under deficit sub – surface drip irrigation and grass mulch densities using Aquacrop model. Study Design: The study was factorial experimental with twelve treatments. Place and ...
Performance evaluation of HEC-HMS for streamflow simulation in a poorly gauged semiarid catchment: Perkerra River, Kenya

Jeptum, Irine; Raude, James M.; Kiptala, Jeremiah K.; Cheruiyot, Charles K. (2026)

Hydrological models are essential for water resources planning, infrastructure development, and drought or flood risk management, yet their application in semiarid, data-scarce catchments remains challenging due to high ...
Performance of standardized precipitation index (SPI) and effective drought index (EDI) in drought forecasting using artificial neural networks (ANNS) for upper Tana River basin, Kenya

Wambua, Raphael M.; Mutua, Benedict M.; Raude, James M. (2014-11)

Occurrence of drought events leads to water resources imbalance within a river basin. However, information on drought episodes for most basins such as Tana River basin in Kenya is limited. Due to the critical role of drought ...
Prediction of missing hydro-meteorological data series using artificial neural networks (ANN) for upper Tana river basin, Kenya

Wambua, Raphael M.; Mutua, Benedict M.; Raude, James M. (Science and Education Publishing, 2016)

Accurate prediction of missing hydro-meteorological data is crucial in planning, design, development and management of water resources systems. In the present research, prediction of such data using Artificial Neural ...
Prediction of water turbidity using artificial neural networks: a case study of Kiriku-Kiende settling basin in Embu County, Kenya

Namu, Patrick N.; Raude, James M.; Mutua, Benedict M.; Wambua, Raphael M. (Science and Education Publishing, 2017)

This paper presents the use of Artificial neural networks (ANN) as a viable means of predicting water turbidity. This was based on the experimental data collected from a physical settling basin model, which was set up at ...
Sediment characterization of unlined water-canal in Chókwè irrigation scheme, Mozambique using multivariate statistical analysis

de Sousa, Lateiro S.; Raude, James M.; Wambua, Raphael M.; Mutua, Benedict M. (2025-04-30)

Chókwè Irrigation Scheme (CIS) has a crucial role of enhancing agricultural production and food security in Gaza Province in Mozambique. However, sediment deposition in the canal system in recent past has adversely affected ...
Spatio-temporal drought characterization for the Upper Tana River Basin, Kenya using the Standardized Precipitation Index (SPI)

Wambua, Raphael M.; Mutua, Benedict M.; Raude, James M. (Science and Education Publishing, 2015)

Drought occurrence in the upper Tana River basin in Kenya has impacted negatively on water resources, hydro-power generation and agricultural production within the basin. Although this is an important river basin in Kenya, ...
Stochastic drought forecasting exploration for water resources management in the upper Tana River basin, Kenya

Wambua, Raphael M.; Mutua, Benedict M.; Raude, James M. (IGI Global, 2016)

This chapter presents the trend of drought as a stochastic natural disaster influenced by the climate variability for the upper Tana River basin in Kenya. Drought frequency, duration and intensity in the upper Tana River ...

Browsing by Author "Raude, James M."

Browsing by Author "Raude, James M."

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