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November 24, 2009


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Typical Overall On-Farm Efficiencies
For Various Types Of Irrigation Systems.

System
Overall Efficiency

Surface
-average
-land leveling and delivery pipeline meeting desing standards
-tailwater recovery
-surge

0.5-0.8
0.5
0.7
0.8
0.6-0.91
Sprinkler
0.55-0.753
Center Pivot
0.55-0.903
LEPA
0.90-0.95
Drip
0.80-0.902

footnotes:
1. Surge has been found to increase efficiencies 8 to 28 percent over non-surge furrow systems.
2. Trickle systems are typically designed at 90 percent efficiency; short laterals (<100ft) or systems with pressure compensationg emitters may have higher efficiencies.
3. Under low wind conditions.


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The TexasET Network is partially supported through a federal program, the “Rio Grande Basin Initiative,” and administered by the
Texas Water Resources Institute of the Texas A&M University System, Cooperative State Research, Education and Extension Service, U.S.
Department of Agriculture under Agreement No. 2005-34461-15661 and Agreement No. 2005-45049-03209.