Definition of Terms

 Definition of Terms

There is a lot of technical terms on the Rivers and Streams website. This page is designed to help navigate and define these words and phrases. Use the line below to skip to a certain letter.
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TermDefinition
Habitat:
Specific type of place within an ecosystem occupied by an organism, population or community that contains both living and nonliving components with specific abiotic and biotic characteristics.
Hardness:
Total concentration of calcium and magnesium ions expressed as mg/L.
Head cut:
Upstream migration or deepening of a stream channel that results from cutting of the streambank by high water velocities.
Headwater stream:
Upper reaches of tributaries in a drainage basin.
Hydrograph:
A graph showing stage, flow, velocity or other characteristics of water with respect to time at a given point on a stream.