Evaluating Your Landscape Irrigation System  
   Testing existing irrigation systems for efficiency.
   http://www.ianr.unl.edu/pubs/horticulture/g1181.htm

Efficient Irrigation  
   Details ways of conserving water with irrigation systems.
   http://www.bae.ncsu.edu/programs/extension/publicat/wqwm/ag508_6.html

Irrigation Filtration Tutorial  
   Explains why irrigation filtration is important.
   http://jessstryker.com/filters.htm

Irrigation for Lawns and Gardens  
   Introduction to the different types of irrigation and planning a system.
   http://www.ces.uga.edu/pubcd/b894-w.html

Efficient Use of Water  
   Details the best use of water in the garden.
   http://aggie-horticulture.tamu.edu/extension/homelandscape/water/water.html

Troubleshooting Checklist  
   A guide for problem solving with drip or trickle irrigation systems.
   http://www.ces.ncsu.edu/depts/hort/hil/hil-33-b.html

Sprinkler Doc  
   An online lawn sprinkler system troubleshooting guide helping contractors and homeowners with sprinkler system repair.
   http://sprinklerdoc.4t.com

Irrigating the Home Garden  
   Covers the basic issues to consider when establishing an irrigation system.
   http://www.ext.vt.edu/pubs/envirohort/426-322/426-322.html

Conserving Water in the Landscape  
   Details how to plan the landscape, select plants, and choose the right irrigation system.
   http://ianrpubs.unl.edu/Horticulture/g1061.htm

LearnAbout: Garden Irrigation  
   Short articles on drip irrigation systems, sprinkler systems and rain barrels.
   http://irrigation.learnabout.info/

Lawn Sprinkler System Tips  
   Provides basic information about common ways to irrigate lawns and gardens, some installation tips, and miscellaneous information about water and mowing the lawn.
   http://www.lawn-sprinkler-system-tips.com