Nile Water Science & Engineering Journal

VOLUMES

Volume: Volume 10, 2017

Issue: Issue 1 , 2017, June

A Review of Seawater Intrusion in the Nile Delta Groundwater System - The Basis for Assessing Impacts due to Climate Changes, Sea Level Rise and Water Resources Development M

On Friday, 30th of June, 2017. 04:44:57 AM
By M.B.Mabrouk

Topic: Enviromental aspects of river engineering
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Downloaded: 97

Abstract

Serious environmental problems are emerging in the River Nile basin and its groundwater resources. Recent years have brought scientific evidence of cl read more

Assessment of the Impact of Different Vegetation as Riparian Zones in Controlling Nutrients and Sediment Flow Into Water Bodies

On Friday, 30th of June, 2017. 04:28:31 AM
By francis karanja kigira

Topic: Enviromental aspects of river engineering
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Downloaded: 53

Abstract

In this case study nutrients and sediment were considered to be an important water quality concern in Nyangores Catchment in the larger Upper Mara Cat read more

Flow Forecasting and Skill Assessment in the Blue Nile Basin

On Friday, 30th of June, 2017. 04:18:08 AM
By Gehad H. Nassar

Topic: River morphology
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Downloaded: 57

Abstract

The long term (seasonal) flow forecast provides an opportunity to improve the planning and management of water resource and hydropower especially for read more

Development of Empirical Formula to Estimate Short Duration Rainfall

On Friday, 30th of June, 2017. 04:06:29 AM
By Eman El Sayed

Topic: Other
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Reads: 59 | Downloaded: 29

Abstract

Daily rainfall data is more available than short duration (10, 20, 30, 60 and 120 minutes). Short duration rainfall is highly required for hydrologica read more

Daily rainfall data is more available than short duration (10, 20, 30, 60 and 120 minutes). Short duration rainfall is highly required for hydrological analysis, proper design of drainage system in urban and to propose and design different hydraulic structures. The objective of this research is to develop an empirical formula for generating short duration rainfalls depth using 24 hr rainfall depth. Rainfall data from 12 stations in Sinai were collected and analyzed to estimate the maximum rainfall depth at different durations. Depth ratios at each duration are calculated based on 24 hr depth for each gauge. Also, frequency analyses are carried out. Average ratios of storm depth at durations of 10, 20, 30, 60 and 120 minutes with respect to 24 hours depth were calculated for each return period. Weighted average of the ratios is calculated according to the number of records at each gauge. These ratios were used to develop an empirical formula to estimate short duration rainfall up to two hours. Also, similar ratios were obtained from WRRI-24hr storm distribution developed by the author. These developed ratios were compared with other common ratios such as Bell’s ratios and Indian Meteorological Department (IMD) empirical reduction formula. These ratios were used to estimate the rainfall depth for the hydrological model to compute the runoff. The result shows that there is a distinct difference between the developed ratios and the other ratios. To quantify the impact of calculation of rainfall storm depth based on these ratios, Rainfall-runoff model is used to compute runoff volume and discharge. The results of the model showed that the computed runoff using the developed ratios is significantly higher. As the developed ratios are mainly based on field records, therefore they can be considered more accurate for Sinai region. It is recommended to use the developed formula to reduce the available 24 hours rainfall values and obtain the required short duration rainfall for the hydrological model applications. less

ET0 Estimation Using Satellite Meteorological Data and Exploratory Regression Tool

On Friday, 30th of June, 2017. 04:01:39 AM
By Hala M. Ebaid

Topic: GIS and Remote Sensing applications in river engineering
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Downloaded: 23

Abstract

Evapotranspiration is an important component of the hydrological cycle and its accurate quantification is crucial for the design, operation and manage read more

Hydrological Response of the Blue Nile Catchment to Downstream Flows Prediction

On Friday, 30th of June, 2017. 03:50:47 AM
By Igbal Salah

Topic: GIS and Remote Sensing applications in river engineering
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Downloaded: 37

Abstract

It is aimed in this study to deal with one of the main water resources basins in the Sudan, the Blue Nile Basin, and the most variable tributary of th read more

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