Surface Runoff Estimation Using SCS-CN Method for Kurumballi Sub-watershed in Shivamogga District, Karnataka, India

Q4 Environmental Science

Nature Environment and Pollution Technology Pub Date : 2024-06-01 DOI:10.46488/nept.2024.v23i02.020

Govindaraju, T. Y. Vinutha, C. J. Rakesh, S. Lokanath, A. K. Kumar

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引用次数: 0

Abstract

SCS-curve number (CN) is one of the most well-liked and commonly applied methods for estimating surface runoff. The present study aims to calculate surface runoff using SCS-CN watershed-based calculation and geospatial technology in the Kurumballi sub-watershed Shivamogga District of Karnataka, India. The study area covers about an area of 47.67 sq. km. The union of land use/land cover classification with hydrological soil groups (HSG) yields the runoff estimation by the SCS-CN curve approach. This method calculates the runoff volume from the land surface flows into the river or streams. Moreover, the study area’s delineation of runoff potential zones was done using the thematic integration method. Different thematic layers were used, including lithology, geomorphology, soil, slope, land use and land cover, drainage, surface water bodies, groundwater contour, and isohyetal maps. Furthermore, associating it with the SCS-CN technique, the total surface runoff volume of the study area was estimated. The total surface runoff volume in the study area is 21065849.7 m3. To this study, thematic integration with the SCS-CN approach to estimate runoff for watersheds is valuable for improving water management and soil conservation.

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使用 SCS-CN 方法对印度卡纳塔克邦 Shivamogga 地区 Kurumballi 小流域进行地表径流估算

SCS 曲线数（CN）是估算地表径流最常用的方法之一。本研究旨在利用 SCS-CN 流域计算方法和地理空间技术计算印度卡纳塔克邦 Shivamogga 区 Kurumballi 子流域的地表径流。研究区域面积约为 47.67 平方公里。将土地利用/土地覆被分类与水文土壤组（HSG）相结合，可通过 SCS-CN 曲线法估算径流量。该方法可计算从地表流入河流或溪流的径流量。此外，研究区域的径流潜势区划分采用了专题整合方法。使用了不同的专题图层，包括岩性图、地貌图、土壤图、坡度图、土地利用和土地覆盖图、排水图、地表水体图、地下水等值线图和等降水量图。此外，结合 SCS-CN 技术，还估算了研究区域的地表径流总量。研究区域的地表径流总量为 21065849.7 立方米。本研究认为，将专题与 SCS-CN 方法相结合来估算流域径流量，对于改善水资源管理和水土保持具有重要价值。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nature Environment and Pollution Technology Environmental Science-Environmental Science (all)

CiteScore

1.20

自引率

0.00%

发文量

159

审稿时长

36 weeks

期刊介绍： The journal was established initially by the name of Journal of Environment and Pollution in 1994, whose name was later changed to Nature Environment and Pollution Technology in the year 2002. It has now become an open access online journal from the year 2017 with ISSN: 2395-3454 (Online). The journal was established especially to promote the cause for environment and to cater the need for rapid dissemination of the vast scientific and technological data generated in this field. It is a part of many reputed international indexing and abstracting agencies. The Journal has evoked a highly encouraging response among the researchers, scientists and technocrats. It has a reputed International Editorial Board and publishes peer reviewed papers. The Journal has also been approved by UGC (India). The journal publishes both original research and review papers. The ideology and scope of the Journal includes the following. -Monitoring, control and management of air, water, soil and noise pollution -Solid waste management -Industrial hygiene and occupational health -Biomedical aspects of pollution -Toxicological studies -Radioactive pollution and radiation effects -Wastewater treatment and recycling etc. -Environmental modelling -Biodiversity and conservation -Dynamics and behaviour of chemicals in environment -Natural resources, wildlife, forests and wetlands etc. -Environmental laws and legal aspects -Environmental economics -Any other topic related to environment