Rainfall data and analysis of Auja al-Timsah catchment and relation with springs discharge

Dissertant

Yasin, Adil Majid

Thesis advisor

al-Mimi, Ziyad
Ghanim, Marwan

Comitee Members

Mari, Amir

University

Birzeit University

Faculty

Institute of Environmental and Water Studies

University Country

Palestine (West Bank)

Degree

Master

Degree Date

2004

English Abstract

Hydrology of Auja al Timsah Catchment was the main issue studied in this research, in terms of rainfall and springs discharge. Auja al Timsah Catchment was chosen specifically for this study since it forms the main recharge area for the western aquifer basin , also there are more than 150 Palestinian communities depends directly on rainfall, or depends on groundwater wells and springs to get their needs from fresh water for drinking and irrigation purposes. The main goal of this study is to screen, estimate and analyze the rainfall data and find the relationship with spring's discharges.

The screened and analyzed data will be the main input for groundwater, surface water, and recharge models used to estimate water budget and estimate yields of aquifers. First, the research started by collecting data from different water institutions, second by screening the data using different tests like time series, tabular comparison, spatial homogeneity, double mass curve, t-test, f-test and trend analysis tests applied for daily, monthly and annual data sets.

Computer programs were utilized and modified to screen the data and estimate the missing.

The data sets were analyzed to evaluate the adequacy of rainfall network and to analyze the water quantities in terms of areal rainfall, wet and dry days, rainfall depth, frequency analysis and extreme analyses, k-analysis, seasonal analysis, temporal and spatial and trend analysis.

Finally springs data were analyzed in the major springs in terms of discharge quantities and relationship with rainfall data. The results of the study indicate that the quality of rainfall data is poor in terms of measurements, instrumentations, network distribution, spatial and temporal coverage.

The rainfall quantities is affected spatially by topography features, geographical location and distance from the coast, the spatial variety is high and caused by small, intense and convective storms.

On the other hand the temporal trend of rainfall shows changes in the annual and seasonal patterns.

Also the results of the study show a strong relationship between rainfall and spring discharges, where the effect of rainfall in recharging the aquifer starts to appear after two months. Finally, in order to conduct the hydrological and modeling studies, the data screening and analysis techniques applied in this study can be applied in other catchments, also other further detailed studies are recommended.

Main Subjects

Earth Sciences, Water and Environment

Topics

• Groundwater
• Palestine

No. of Pages

108

Table of Contents

• APA
• MLA
• AMA

Language

English

Data Type

Arab Theses

Record ID

BIM-302783