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Ronny Berndtsson

Professor, Dep Director, MECW Dep Scientific Coordinator

Profile photo of Ronny Berndtsson

Simplified SMA-inspired 1-parameter SCS-CN model for runoff estimation

Author

  • Sangeeta Verma
  • Pushpendra Kumar Singh
  • Surendra Kumar Mishra
  • Sanjay Kumar Jain
  • Ronny Berndtsson
  • Anju Singh
  • Ravindra Kumar Verma

Summary, in English

This study proposes a simplified 1-parameter SCS-CN model (M5) based on Mishra-Singh (2002) model and soil moisture accounting (SMA) procedure for surface runoff estimation and compares its performance with the existing SCS-CN method (SCS, 1956) (M1), Michel 1-P model (Water Resour Res 41:1-6, 2005) (M2), Sahu 1-P model (Hydrol Process 21:2872-2881, 2007) (M3), and Ajmal et al. model (J Hydrol 530:623-633, 2015) (M4) using large rainfall–runoff dataset of 48,763 events from123 USDA-ARS watersheds. The performance of models was evaluated using three statistical error indices such as Nash-Sutcliffe efficiency (NSE), root mean square error (RMSE), percentage bias (PBIAS), and rank and grading system (RGS). Based on the results obtained, the models can be ranked as follows: M5 > M4 > M3 > M1 > M2, i.e., model M5 outperformed all the remaining four models M1–M4 and hence is recommended for field applications.

Department/s

  • Division of Water Resources Engineering
  • Centre for Advanced Middle Eastern Studies (CMES)
  • MECW: The Middle East in the Contemporary World

Publishing year

2018-08-01

Language

English

Publication/Series

Arabian Journal of Geosciences

Volume

11

Issue

15

Document type

Journal article

Publisher

Springer

Topic

  • Probability Theory and Statistics
  • Civil Engineering

Keywords

  • Curve number
  • SCS-CN method
  • Soil moisture accounting
  • Surface runoff

Status

Published

ISBN/ISSN/Other

  • ISSN: 1866-7511