Question

What are the isohyets?

Answer 1

Hint: Also known as isohyetal line, it is a line drawn on a map that connects the points. Isohyets are mainly based on interpolation between rain gauge stations. It is one of the contour lines used to depict a curve to connect the points where the function has the same value.

Complete Step by Step Answer
Isohyets are contour lines drawn on the map that connect the points having the same amount of precipitation over a given period or for a particular storm. The method used for estimating the average rainfall across a particular area is called the isohyetal method. This method is used to draw lines of equal precipitation on a map. With the help of this method, rainfall values are plotted on a proper base map at their respective stations. They are used to create isohyetal maps.

Additional Information
A contour line is a function of two variables and is depicted as a curve that connects the points where the function has the same value. There are different types of contour lines such as isarithm, isoline, isopleth, and isohyet which represent an imaginary line on the land’s surface and all of their names start from “iso”, which is a Greek word meaning equal.

Note
Be it Isohyets or any other type of contour line, they should be labeled properly as it will help the reader to translate the shape of the terrain a little faster. While creating isohyets, it is hypothesized that precipitation between two different stations differs linearly unless there is a rapid or brief change in topography. Isohyets use topographic data together with other data to come up with authentic estimates.