The widely accepted recognition of global environmental problems has resulted in a paradigm shift for research in the hydrosciences. Hydrologic model has played important roles in hydroscience and engineering. However, there are some limitations to deal with real world problems. In this paper, comprehensive review on the current status and major issues on hydrologic models. The sources of model uncertainty were classified and discussed. Finally, model calibration and verification issues were discussed in view of Popperian perspective.

• 정일문(한국건설기술연구원 수자원하천연구소) | Il-Moon Chung
• 권지혜(한국시설안전공단 시설안전연구소) | Jihye Kwon
• 이정우(한국건설기술연구원 수자원하천연구소) | Jeongwoo Lee Corresponding Author