Articles | Volume 22, issue 9
Research article
10 Sep 2018
Research article |  | 10 Sep 2018

Including effects of watershed heterogeneity in the curve number method using variable initial abstraction

Vijay P. Santikari and Lawrence C. Murdoch


Total article views: 2,495 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
1,576 834 85 2,495 84 86
  • HTML: 1,576
  • PDF: 834
  • XML: 85
  • Total: 2,495
  • BibTeX: 84
  • EndNote: 86
Views and downloads (calculated since 08 Nov 2017)
Cumulative views and downloads (calculated since 08 Nov 2017)

Viewed (geographical distribution)

Total article views: 2,495 (including HTML, PDF, and XML) Thereof 2,390 with geography defined and 105 with unknown origin.
Country # Views %
  • 1


Discussed (final revised paper)

Latest update: 20 Apr 2024
Short summary
The curve number (CN) method is the most widely used approach for estimating runoff from rainfall. Despite its popularity, there is a conceptual flaw where CN varies with rainfall although it is assumed to be constant. In this paper, we describe theoretical analyses that show how this behavior is due to watershed heterogeneity, and we then provide simple modifications to the method to improve its runoff predictions. The findings will benefit hydrologists and watershed models that use CN method.