Decision of minimum rain gauge density in a combined radar-rain gauge rainfall observation system: A case study of the Imjin River Basin, Korea

Kyoungjun Kim, Keewook Kim, Chulsang Yoo

Research output: Contribution to journalArticle

2 Citations (Scopus)


This study reviews combined rainfall observation using both radar and rain gauges. Sampling error theory is introduced and applied to an evaluation of the rain gauge network of the upstream region of the Imjin River Basin in North Korea. Under the assumption that the Ganghwa Radar is properly calibrated, an additional 13 rain gauges (including the eight that are currently in operation) is deemed sufficient to secure the quality of rainfall observation with 37 rain gauges without radar.

Original languageEnglish
Pages (from-to)49-62
Number of pages14
JournalWater International
Issue number1
Publication statusPublished - 2010 Jan 1



  • Combined observation
  • Imjin River Basin
  • North Korea
  • Radar
  • Rain gauge

ASJC Scopus subject areas

  • Management, Monitoring, Policy and Law
  • Water Science and Technology

Cite this