Frequently Asked Questions
Below you will find information that might help you understand how to find things or learn about information you might need to know about your city or town.
Engineering - Water Budgets
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Engineering - Water Budgets
A landscape water budget is an estimate of how much water is needed to maintain a healthy landscape based on factors such as climate, landscaped area, and plant type.
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Engineering - Water Budgets
The water budget equation includes reference evapotranspiration (ETo) data from a local weather station, plant factors that relater to plant type water use needs, and irrigated areas of turf and shrubs. Estimates total water use can be determined using the following formula:
Estimated Total Water Use Equation: (ETo)×(0.62)×[(PF × HA÷IE) + SLA]
- ETo= Reference evapotranspiration (weather factor)
- PF= Plant factor
- HA= Hydrozone area = square footage of irrigated area(s), by plant type (turf or shrubs)
- IE= Irrigation efficiency
- SLA= Special Landscape Area