Georgia Water Use
Dr. Jim HookNational Environmentally Sound Production
Agriculture LaboratoryApril 12, 2001
Suwannee River Symposium
Ag Water Use – EPD Permits
Source Permits #
Ave gpm
Total gpm
Potential Mgd
GW 1,568 530 830,000 1,200
SW 3,276 935 3,060,000
4,410
Total 4,844 800 3,890,000
5,610
Ag Water Use – EPD Permits
Source Permits #
Ave acre
Total Permit
acre
Cropland acre
GW 1,568 112 176,800 -
SW 3,276 71 233,100 -
Total 4,844 86 409,900 704,400
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 -
Ag Water Use – Adjusted EPD Acres
Source Permits #
Prob. Permit
acre
Prob. Y2K use acre-in
GW 1,568 103,000 880,000
SW 3,276 198,000 1,670,000
Total 4,844 301,000 2,550,000
Ag Water Use–Extension Y2K Survey
Source Systems #
Irrigated acre
Calc. Y2K use acre-in
GW 1,768 115,000 916,000
SW 1,544 100,000 797,000
W2P 627 41,000 327,000
Total 3,940 256,000 2,040,000
EPD adjTotal
4,844 301,000 2,550,000
Annual Irrigation Withdrawals
Source Irr Amtannualized
Irr AmtMay-Sep
Irr AmtMax-1 mo
GW (mgd) 68 165 412
SW (mgd) 59 142 355
W2P (mgd)
24 58 145
Total (mgd)
151 365 912
All Water Use – Ext Irr, EPD oth
Source
MGD
Irrig
MGD Municip
al
MGD
Public
MGD Individual
MGD Industry
GW 68 42 19 12 23
SW 59 0 0 0 0
W2P 24 0 0 0 0
Total 151 42 19 12 23
All Water Use – Annualized
0
20
40
60
80
100
120
140
160
Irrigation Mun&Pub Private Industry
Equivalent Surface Flow for Irrigation
Source Irr Flowannualize
d
Irr FlowMay-Sep
Irr FlowMax-1 mo
GW (mgd)
68 165 412
SW (mgd)
59 142 355
W2P (mgd)
24 58 145
SW (cfs) 91 220 550
W2P (cfs)
37 90 220
Summary
