Hydrograph

A hydrograph is a graph that shows how the flow of water in a river or stream changes over time, typically after a rainfall or snowmelt. The x-axis represents time, while the y-axis shows the amount of water flow, usually in cubic meters or feet per second. It helps visualize how quickly water levels rise and fall, indicating the response of the river to precipitation events. Hydrographs are useful for flood forecasting, water resource management, and understanding river behavior during different weather conditions.