Mail to: North Coast Water Coalition 513 Center Street Healdsburg
Russian River Water Conservation Council Russian River Frost Protection Regulation EXAMPLE FROST WATER VOLUME CALCULATIONS Conversion from Gallons to Acre Feet 325,851 gallons = 1 acre foot Multiply # of sprinklers x Gallons per minute per sprinkler for total gallons per min # sprinklers x GPM/Sprinkler = Total GPM Total GPM x total minutes frost pumps were on = total gallons Total gallons divided by 325,851 gallons = total acre feet of water used EXAMPLE Average sprinkler is 2 gallons per minute flow rate Average field has 27 sprinklers per acre 2gpm x 27 sprinklers/acre = 54 gpm/acre Example Frost event ‐‐‐ Turn pumps on for 4 hours 4 hours x 60 min/hr= 240 minutes 240 minutes x 54 gal/min/acre= 12,960 gallons/acre Example 10 acre frost protected vineyard 10 acres x 12,960 gallons = 129,600 gallons 129,600 gallons / 325,851 gal/acre ft = 0.40 acre feet of water for a 10 acre vineyard and a 4 hour frost event. Email: [email protected] or [email protected] 707‐ 473‐8236 Mail to: North Coast Water Coalition 513 Center Street Healdsburg, CA 95448
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