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8-10 inches 14-16 inches 10-12 inches 12-14 inches 16-18 inches 20-22 inches 10-12 inches 22-24 inches 0-8 inches 0-8 inches 18-20 inches 24-28 inches 8-10 inches Boardman [8.45] Richland [7.11] Arlington [8.99] Kennewick [7.61] Bickleton [13.33] Mc Nary Dam [7.78] John Day Dam [10.22] Kennewick 10 SW [9.23] Satus Pass 2 SSW [22.86] R. Eby [9.53] Finley [6.53] Gramling [7.94] Horrigan [6.39] Kennewick [10.63] Hundred Circles Farms [4.66] Alderdale [5.26] F i g u r e 2 - 9 F i g u r e 2 - 9 C L I M A T E S T A T I O N S A N D M E A N A N N U A L C L I M A T E S T A T I O N S A N D M E A N A N N U A L P R E C I P I T A T I O N D I S T R I B U T I O N P R E C I P I T A T I O N D I S T R I B U T I O N W R I A 3 1 W a t e r s h e d P l a n n i n g W R I A 3 1 W a t e r s h e d P l a n n i n g B e n t o n , K l i c k i t a t a n d Y a k i m a C o u n t i e s , W A B e n t o n , K l i c k i t a t a n d Y a k i m a C o u n t i e s , W A · Legend Climate Stations [Mean Annual Prec.] (WRCC) Climate Stations [Mean Annual Prec.] (PAWS) & Populated Places (WSDOT) State Routes (WSDOT) Watercourses (Ecology) Waterbodies (Ecology) Delineated Subbasins (Aspect Consulting) Counties (WSDOT) 0 60,000 30,000 Feet Note: Color-ramped zones represent modeled (PRISM) distribution of mean annual precip. (1961-1990; refer to text). Mean annual precip. values from individual climate stations are from variable time periods.