What is the difference between hydrograph and hyetograph?

Answer 1

A hydrograph and a hyetograph are both graphs that show changes over time, but they represent different types of data.

Hydrograph

A graph that shows the discharge of a stream or river at a specific point over time. Discharge is the rate of flow, usually measured in cubic meters or cubic feet per second (cms or cfs). Hydrographs can be used to make long-term flood risk forecasts.

Hyetograph

A graph that shows the amount of water input, such as precipitation or snowmelt, at a specific point over time. Hyetographs can also show rainfall intensity over time.

Hyetographs can sometimes be shown on the secondary x- and y-axis of a hydrograph to compare the stream's response to the water input.

Answer 2

hyetograph is the graph between intensity of rainfall and time whereas hydrograph is the graph between discharge and time.