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1 2 3 4 5 6 <br /> <br />Jan 2.66 0.00 2.66 0.98 0.57 2.09 <br />Feb 3.00 0.00 3.00 1.68 0.97 2.03 <br />Mar 2.31 0.00 2.31 3.37 1.95 0.36 <br />Apr 1.26 0.00 1.26 5.08 2.95 0.00 <br />May 0.64 0.00 0.64 6.67 3.87 0.00 <br />Jun 0.12 0.00 0.12 7.51 4.36 0.00 <br />Jul 0.01 0.00 0.01 7.74 4.49 0.00 <br />Aug 0.02 0.00 0.02 6.80 3.94 0.00 <br />Sep 0.14 0.00 0.14 5.01 2.91 0.00 <br />Oct 1.38 0.00 1.38 3.25 1.89 0.00 <br />Nov 1.71 0.00 1.71 1.50 0.87 0.84 <br />Dec 2.18 0.00 2.18 0.90 0.52 1.66 <br />Total 15.43 15.43 50.49 29.28 6.97 <br />* =Eto x adjustment factor of 0.58 for hypothetical mix of vegetation and landscape conditions per below <br />a. Key reference: University of Calif. Division of Agriculture and Natural Resources: Estimating Landscape Water Requirements (Table 1) Plant Type Plant Factor <br />https://ucanr.edu/sites/UrbanHort/Water_Use_of_Turfgrass_and_Landscape_Plant_Materials/SLIDE__Simplified_Irrigation_Demand_Estimation/Tree, Shrubs, Vines, Groundcovers 0.5 <br />(woody plants) <br />b. Approximate Site Development Conditions: Herbaceous Perennials 0.5 <br />Fraction of Total Plant Factor*Product Desert Adapted Plants 0.3 <br />0.20 0.1 0.02 Annual Flowers & Bedding Plants 0.8 <br />0.40 0.5 0.2 General Turfgrass Lawns, cool-season (tall fescue, Ky. <br />bluegrass, rye, bent)0.8 <br />0.20 0.8 0.16 General Turfgrass Lawns, warm-season (bermuda, zoysia, St, <br />Augustine, buffalo)0.6 <br />0.20 1.0 0.2 Home Fruit Crops, Deciduous 0.8 <br />1.00 0.58 Home Fruit Crops, Evergreen 1.0 <br />Home Vegetable Crops 1.0 <br />Actual ET <br />(in/month)* <br />Net Rainfall <br />Recharge <br />(in/month) <br />Example Water Balance-Recharge Analysis - Lodi, California <br />* Per Table 1 for applicable landscape categories; for impervious areas assume nominal 0.05 to 0.10 <br />to account for evaporation of rainfall retained on paved surfaces, gutters, puddles, etc. <br />1. From UC reference; note Plant Factors are annual average values; additional <br />refinement may be needed for seasonal crops <br />Home Fruit Crops, Evergreen <br />Land Condition <br />Composite <br />Table 1. Plant Factors (PF) for established landscape plants, turfgrasses, and <br />garden crops to provide acceptable performance in California1.Example Calculation of "Composite" Eto Adjustment Factor for Hypothetical Residential Lot <br />Impervious Area <br />Trees, Shrubs Groundcovers <br />Turfgrass, cool-season <br />Ave Precip. <br />(in/month) <br />Average Runoff <br />Volume <br />(fraction) <br />Available Precip. <br />(in/month) <br />Month Potential ETo <br />(in/month)