"A graph showing the rate of flow (discharge) versus time past a specific point in a river, or other channel or conduit carrying flow. A unit hydrograph is the hypothetical unit response of a watershed (in terms of runoff volume and timing) to a unit input of rainfall." (United Nations Publications, 2013)


United Nations Publications. "Glossary of Shared Water Resources (English-Arabic): Technical, Socioeconomic and Legal Terminology." (2013). DOI:https://dx.doi.org/10.18356/70b462ce-en