Water Balance (Water and Carbon Cycles) 1.1

Question	Answer
What is the water balance (budget)?	Balance between inputs (precipitation) and outputs ( run-off, evapotranspiration, soil and groundwater storage)
When do rivers only occur?	Stores are available to release water, direct precipitation or there is overland flow into the river
What is a river's regime?	DIscharge levels rising and falling showing an annual pattern
What is the water balance formula?	Precipitation (P) = discharge (Q) +evapotransipiration (E) ± changes in storage (S)
What is potential evaporation?	AMount of water that could be evaporated or transpired from an area if there was a sufficient water available
What presents the relationship between precipitation and potential evapotranspiration over a year?	Soil Moisture Graph
What does each section of the soil moisture graph show? Image: 9721389 Orig (binary/octet-stream)	Green- soil moisture recharge Blue - Soil moisture utilisation Pink -Soil moisture deflict Purple - Soil moisture surplus Blue line - Precipitation Dashed red line - Potential evapotranspiration
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Resource summary

	Created by Charlotte Willis over 6 years ago