The isohyetal method is used to estimate the mean precipitation across an area by drawing lines of equal precipitation. ... Isohyets are contours of equal precipitation analogous to contour lines on a topographic map.

What is the purpose of Isohyets?

An isohyet is also known as isohyetal line, and it is a line on a map which connects points that have the same amounts of precipitation in a given period or for a particular storm. The method used in estimating average rainfall across a particular area is known as an isohyetal method.

What do Isolines show?

Isoline maps help the reader to recognise patterns and relationships between the geography of an area and data that might have been collected on the ground, such as air temperature. ... Isolines are lines drawn on a map connecting data points of the same value. They are commonly used by geographers.