Definition of "hydrography" [hy•drog•ra•phy]

• The scientific description and analysis of the physical conditions, boundaries, flow, and related characteristics of the earth's surface waters. (noun)
• The mapping of bodies of water. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Nevertheless, not only the geology and hydrography of this state play a favorable role in adventure tourism but also the variety of climates from the cold mountain forests to the tropical warmth of the coast, from the temperate central zones to the dry heat of the hot land known as the Tierra Caliente contribute significantly."
• "The Black Hills are an outlier of the Middle Rockies and share with them a montane climate, hydrography, and land use pattern."
• "The hydrography of the St. Lawrence Island polynya region and the Anadyr region is ultimately related to the northward transport of water through the Bering Strait."