Hydrography
Nounहाइड्रोग्राफी (पानी के भौतिक विशेषताओं का अध्ययन)
Definition
The scientific study of the physical features of oceans, rivers, and lakes (e.g., mapping water bodies).
Contextual Sentence: "Hydrography data is crucial for coastal zone management, a topic in UPSC’s Geography papers."
💡 Memory Hook (Mnemonic): Hydro (water) + graphy (study) → think of ocean charts.
Synonyms
water mapping
navigational survey
Antonyms
terrestrial survey
landography