干旱区生态环境知识资源中心(Arid): Curve Number Estimation for Ungauged Watershed in Semi-Arid Region

Arid

DOI	10.28991/cej-2021-03091711
	Curve Number Estimation for Ungauged Watershed in Semi-Arid Region
	Krisnayanti, Denik Sri; Bunganaen, Wilhelmus; Frans, John H.; Seran, Yustinus A.; Legono, Djoko
通讯作者	Krisnayanti, DS (corresponding author), Nusa Cendana Univ, Jl Adi Sucipto Penfui, Kupang 85001, Indonesia.
来源期刊	CIVIL ENGINEERING JOURNAL-TEHRAN
ISSN	2676-6957
EISSN	2476-3055
出版年	2021
卷号	7 期号:6 页码:1070-1083
英文摘要	The Benanain Watershed is located in East Nusa Tenggara with an area of 3,181 km(2) and is divided into 29 sub-watersheds. The East Nusa Tenggara itself is an eastern region of Indonesia with a unique climate condition called semi-arid. The high rainfall intensity occurring in short duration results in large surface runoff and erosion. Floods and erosion in semi-arid areas due to sensitive soils to drought and heavy rainfall extremely. This paper presents the application of the Soil Conservation Services-Curve Number (SCS-CN) real-flood flows through a digital map of soil type, land use, topography, and the heterogeneity of physical condition, especially for ungauged watersheds. The method used is an approach empirical to estimate runoff from the relationship between rainfall, land use, and soil hydrology groups. This watershed has a large area that must analyze every sub-watershed. The land-use of the Benanain watershed is secondary dryland forest by 44.26% and the hydrological soil group on the B group classification with medium to high absorption potential by 46.502% from the total area. The curve number value of the Benanain Watershed ranges from 56.54 to 73.90, where the mean CN value of 65.32. The rainfall (mm) for the 29 sub-watersheds in the Benanain Watershed has decreased by about 74.65% when being surface runoff or only 25.35% of water becomes surface runoff. The relationship between rainfall depth and CN is classified as standard response and trend line (flat slope) equilibrium occurs when rainfall depth value of 56.71 mm and CN is close to 66.30. The high variability of intense rainfall between the rainy season and the dry season had a significant influence on the curve number value in a large watershed area. Further analysis will be more accurate if it is supported by long rainfall data and observation runoff data as a control.
英文关键词	SCS-CN Method Soil Type Land Use Standard Response
类型	Article
语种	英语
开放获取类型	Other Gold
收录类别	ESCI
WOS记录号	WOS:000657477400011
WOS关键词	RUNOFF
WOS类目	Engineering, Civil
WOS研究方向	Engineering
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352763
作者单位	[Krisnayanti, Denik Sri; Bunganaen, Wilhelmus; Frans, John H.; Seran, Yustinus A.] Nusa Cendana Univ, Jl Adi Sucipto Penfui, Kupang 85001, Indonesia; [Legono, Djoko] Univ Gadjah Mada, Caturtunggal 55281, Di Yogyakarta, Indonesia
推荐引用方式 GB/T 7714	Krisnayanti, Denik Sri,Bunganaen, Wilhelmus,Frans, John H.,et al. Curve Number Estimation for Ungauged Watershed in Semi-Arid Region[J],2021,7(6):1070-1083.
APA	Krisnayanti, Denik Sri,Bunganaen, Wilhelmus,Frans, John H.,Seran, Yustinus A.,&Legono, Djoko.(2021).Curve Number Estimation for Ungauged Watershed in Semi-Arid Region.CIVIL ENGINEERING JOURNAL-TEHRAN,7(6),1070-1083.
MLA	Krisnayanti, Denik Sri,et al."Curve Number Estimation for Ungauged Watershed in Semi-Arid Region".CIVIL ENGINEERING JOURNAL-TEHRAN 7.6(2021):1070-1083.