Analysis of Regional Flow Duration Curve for the Rainwater Harvesting Systems in Different Climate of Iran

Kazemi, Rahim

doi:10.22077/jwhr.2022.5504.1070

Document Type : Research Paper

Author

Rahim Kazemi

Assistant Prof. Soil Conservation and Watershed Management Research Institute, Agricultural Research, Education and Extension Organization, Tehran, Iran

https://doi.org/10.22077/jwhr.2022.5504.1070

Abstract

Water harvesting has been widely applied in different climate zones, proving to be a valuable approach to sustainable water resource management. Regional estimates of the potential of water harvesting are generally based on purely hydrological assessments and mostly neglect the flow duration dimension of river. The purpose of this study was to analyze the indices to be extracted from flow duration curve (FDC) in the different climate areas. In this research, the basins in each climatic region were first separated by intersecting of climatic map and the border map of the basins. Then, 30 hydrometric stations with the common period (1976-2017) in two climate areas were selected. FDC using daily stream flow data were extracted by Hydro Office - software (2015) and then indices of Q₂, Q₅, Q₁₀, Q₁₅, Q₂₀, Q₅₀, Q₇₅, and Q₉₀ were computed. The slope of FDC were computed and finally the results were analyzed and interpreted. The results showed that variation of FDC slope in the basins of humid area was in the interval of (0 to 39%) and in the semi-humid climate in the interval (0 to 48%). In humid basins, the minimum difference between the indices were related to the beginning and end of FDC (Q₂ and Q₉₀) and the maximum changes were in the middle part of FDC (Q₁₅ and Q₂₀).

Keywords

Main Subjects

Traditional and modern ways of water harvesting

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Water Harvesting Research

Analysis of Regional Flow Duration Curve for the Rainwater Harvesting Systems in Different Climate of Iran

References

References

Volume 5, Issue 2 - Serial Number 8
June 2022
Pages 144-149

Analysis of Regional Flow Duration Curve for the Rainwater Harvesting Systems in Different Climate of Iran

References

References

Volume 5, Issue 2 - Serial Number 8June 2022Pages 144-149

Volume 5, Issue 2 - Serial Number 8
June 2022
Pages 144-149