LANDSCAPEIRRIGATIONCONSERVATIONBEST MANAGEMENT PRACTICES

LANDSCAPE INDUSTRY COUNCIL OF HAWAII

3 LANDSCAPE INDUSTRY COUNCIL OF HAWAII2 W W W. L A N D S C A P E H AWA I I . O R G

Irrigation Precipitation Rate1.5 inches/hr

Runoff0.5 inches/hr

pit

Infiltration1 inch/hr

16

Head to Head coverageWater from one sprinkler touches the next sprinkler.

Brochure graphics courtesy of the State of Hawaii Department of Transportation.

CREATE A SUSTAINABLE FUTURELANDSCAPE IRRIGATION uses upwards of fifty percent or more of our household drinking water. A poorly maintained or installed irrigation system can waste up to fifty percent of water due to inefficient irrigation practices, poor components, evaporation and runoff.

MAINTAINING AND INSTALLING water efficient irrigation systems is one of the most effective ways to reduce wasted drinking water, reduce run-off, sediments and optimize plant health by applying the correct amount of water.

THE LICH LANDSCAPE IRRIGATION CONSERVATION Best Management Practices includes 16 installation and 10 maintenance low cost & practical measures to save upwards of fifty percent of our landscape irrigation water. Use this guide or consult with a certified landscape professional.

WATER is a precious resource for a sustainable future. Please do your part to conserve our drinking water.

INSTALLATION BEST MANAGEMENT PRACTICES

THIS SYMBOL DENOTES THE TOP TEN WATER CONSERVATION BEST MANAGEMENT PRACTICES.

4 W W W. L A N D S C A P E H AWA I I . O R G 5 LANDSCAPE INDUSTRY COUNCIL OF HAWAII

– Graphic courtesy of Rain Bird Corporation.

6 W W W. L A N D S C A P E H AWA I I . O R G 7 LANDSCAPE INDUSTRY COUNCIL OF HAWAII

Sprinkler without check valve Sprinkler with check valve

Fixed Spray

Bubblers

Microspray

Precision Spray

Rotating Stream

Impact Rotors

Gear Rotors

Drip Systems

TYPICAL PRECIPITATION RATE RANGES

Precipitation Rate in Inches per hour

0.0 0.5 1.0 1.5

Low Moderate High

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Rain Garden

Rain gardens retain water on site and recharge our aquifers.ddd rerere recchacchacha gergergerge ouou our ar ar aquiquiquiferfefers.

11 LANDSCAPE INDUSTRY COUNCIL OF HAWAII10 W W W. L A N D S C A P E H AWA I I . O R G

Season Irrigation Run Time Days per Week

Summer 15 minutes Every other day (June to Aug.)

Transition Periods 7 minutes Every other day (Fall: Sept. to Nov. and Spring: Mar. to May)

Winter 5 minutes Twice per week (Dec. to Feb.)

TYPICAL SEASONAL IRRIGATION SCHEDULE FOR HAWAII

00 W W W. L A N D S C A P E H AWA I I . O R G

10MAINTENANCE BEST MANAGEMENT PRACTICES

Photo courtesy Honolulu Board of Water Supply

Run times shown for spray head zones. Rotor zones should be double run times shown.

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Industry Council of Hawai‘iLANDSCAPE

Supported by:

7/2012