Variation of some physical and hydrological soil characteristics of selected sites in Telkayf District
- Authors
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Mooatasim Daood Agha1, Yousif Hasan Al-Naser2, Noor Almola3, Ahmed Ali Khudhur4
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- Abstract
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This research was carried out in the Telkayf District of Nineveh Governorate, utilizing three distinct soil textures characterized as calcareous and slightly alkaline . A logarithmic scale was used to analyze the relationship between infiltration time (1–180 min) and cumulative infiltration depth (mm). The modeling results demonstrated that soil water infiltration behavior was best represented , consistent with the results of the Gebul eq . , with a high coefficient of determination (R²= 0.99). An inverse relationship was observed between the slope parameter of the linear equation (n) and the fine soil particles, confirming the crucial influence of soil texture on infiltration dynamics. Moreover, the measured cumulative infiltration depths closely matched the values predicted by the Gebul eq., as indicated by an r =0.99. Field measurements indicated initial infiltration rates ranging between 300 and 360 mmh⁻¹, which then decreased over time. The steady-state infiltration rates were 72 mm h⁻¹ at Kibah, 60 mmh⁻¹ at Qawsiate, and 21 mmh⁻¹ at Telaskuf. The initial infiltration rates predicted by the Gebul and Horton equations were consistently lower than the corresponding field-measured values. In contrast, the Gebul eq. showed a tendency to overestimate the basic infiltration rate, reaching approximately twice the measured value in Kibah soils. Therefore, this study aims to establish the foundations for selecting a suitable infiltration equation for different soil sites , this reduces the burden of fieldwork in assessing the filtration rate.
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- Published
- 2026-06-30
- Issue
- Vol. 18 No. 2 (2026)
- Section
- Articles