Georgia Water Use Dr. Jim Hook National Environmentally Sound Production Agriculture Laboratory April 12, 2001 Suwannee River Symposium
Feb 01, 2016
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