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Florida Water StarSM Technical Manual

Irrigation system criteria

Operation and scheduling

Commercial water budget

Background

Industry experience and research indicates that a site-appropriate landscape can thrive on a 20 annual inch water budget. This 20-inch water budget provides a clear goal for water conservation. The water budget requirement allows designers more flexibility in creating the landscape, instead of selecting specific practices from a points list.

Requirements and certification

The irrigation schedule for maintenance does not exceed 20 inches per square foot (12.5 gallons) annually, and the controller is set for compliance with water management district landscape watering restrictions.

Silver

Gold

Commercial/Institutional

NA

NA

Required

The limit of 20 inches is not fixed to a single location, but it can be averaged across the entire landscaped area. In other words, any water below 20 annual inches not used in an area could be used elsewhere in the landscape and is, therefore, considered an average application over the entire landscaped area. For instance, excess budgeted water for a landscape bed with shrubs that requires little additional irrigation beyond establishment could be used for an annual bed that might require more than 20 inches annually.

This water budget is the annual depth of application per square foot allowed for maintenance irrigation. Therefore, establishment irrigation is exempt, but must occur in compliance with Florida Water StarSM requirements.

Thorough calculations are required to verify this prerequisite. This water budget calculator may be used to demonstrate compliance.

St. Johns River Water Management District
4049 Reid Street, Palatka, FL 32177
800-725-5922