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1 1 <br /> ~ ~ ~ Appendix C <br /> Reference Evapotranspiration (ETo) Table <br /> A endix C -Reference Eva otrans iration (ETo) Table* <br /> County and City Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual <br /> Oran a ETo <br /> Irvine 2.2 2.5 3.7 4.7 5.2 5.9 6.3 6.2 4.6 3.7 2.6 2.3 49.6 <br /> Laguna Beach 2.2 2.7 3.4 3.8 4.6 4.6 4.9 4.9 4.4 3.4 2.4 2.0 43.2 <br /> Santa Ana 2.2 2.7 3.7 4.5 4.6 5.4 6.2 6.1 4.7 3.7 2.5 2.0 48.2 <br /> * The values in this table were derived from:i) California Irrigation Management Information System (CIMIS) 2) Reference <br /> Eva oTrans iration Zones Ma , UC De t. of land, Air & Water Resources and Califomia D t of Water Resources 1999, <br /> 3) Reference Eva otrans iration for California, Universit of California, De artment of A riculture and Natural Resources <br /> (1987) Bulletin 1922 4) Determining Daily Reference Evapotranspiration, Cooperative Extension UC Division of <br /> <br /> Agriculture and Natural Resources (1987), Publication Leaflet 21426 <br /> C-1 <br /> 75A-54 <br /> <br />