If the aim is to learn hydrology effectively, the wise path is eclectic. Use Singh’s clear expositions and worked problems as the skeleton — the essential mechanics — and then flesh that skeleton with contemporary tools and perspectives: GIS overlays of watersheds, remote-sensing precipitation products replacing sparse gauges, probabilistic flood-frequency methods that account for nonstationarity, and case studies that place engineering choices within social and environmental context. That hybrid approach respects Singh’s strength — clarity in fundamentals — while adapting to 21st-century complexity.