1. Georgia Water Use Dr. Jim Hook National Environmentally Sound Production Agriculture Laboratory April 12, 2001 Suwannee River Symposium

10. Ag Water Use – EPD Permits SourcePermits # Ave gpm Total gpmPotential Mgd GW1,568530 830,0001,200 SW3,2769353,060,0004,410 Total4,8448003,890,0005,610

11. Ag Water Use – EPD Permits SourcePermits # Ave acre Total Permit acre Cropland acre GW1,568112176,800- SW3,27671233,100- Total4,84486409,900704,400

12. EPD Permitted Acres: Discrepancies 1.Unpermitted Systems+ 2.Unused Permits- 3.Duplicate (same field, later)- 4.Duplicate (W2P & 2 source)- 5.Irrigate more than permit+ (19%) 6.Irrigate less than permit- (52%) 7.‘Padded’ acres-

15. Ag Water Use – Adjusted EPD Acres SourcePermits # Prob. Permit acre Prob. Y2K use acre-in GW1,568103,000880,000 SW3,276198,0001,670,000 Total4,844301,0002,550,000

16. Ag Water Use–Extension Y2K Survey SourceSystems # Irrigated acre Calc. Y2K use acre-in GW1,768115,000916,000 SW1,544100,000797,000 W2P627 41,000327,000 Total3,940256,0002,040,000 EPD adjTotal 4,844301,0002,550,000

17. Annual Irrigation Withdrawals SourceIrr Amt annualized Irr Amt May-Sep Irr Amt Max-1 mo GW (mgd)68165412 SW (mgd)59142355 W2P (mgd)2458145 Total (mgd)151365912

19. All Water Use – Ext Irr, EPD oth SourceMGD Irrig MGD Municipal MGD Public MGD Individual MGD Industry GW6842191223 SW590000 W2P240000 Total15142191223

20. All Water Use – Annualized

21. Equivalent Surface Flow for Irrigation SourceIrr Flow annualized Irr Flow May-Sep Irr Flow Max-1 mo GW (mgd)68165412 SW (mgd)59142355 W2P (mgd)2458145 SW (cfs)91220550 W2P (cfs)3790220

22. Summary