Table 39. Water Management Practices Used by Operators with Gravity Systems for Acres in the 
Open: 2013 and 2008 (continued) 
[Excludes area under protection and institutional, research, and experimental farms. For meaning of abbreviations and symbols see introductory text] 
Conservation technique used ^ - con. 
Geographic area 
Surge flow 
or cablegation ® 
Precision-leveling or 
zero-grading ^ 
Shorter furrow length, PAM or 
special furrow practices ' 
Farms 
Acres 
irrigated 
Farms 
Acres 
irrigated 
Farms 
Acres 
irrigated 
United States 2013 
3,227 
506,395 
10,157 
3,898,913 
6,435 
1,241,141 
2008 
4,556 
566,941 
11,590 
3,985,596 
10,030 
1 ,738,079 
2013 DATA 
Alabama 
_ 
_ 
1 
(D) 
5 
280 
Alaska 
- 
- 
- 
- 
- 
Arizona 
24 
55,614 
1,002 
273,245 
110 
59,713 
Arkansas 
70 
22,286 
785 
965,703 
262 
182,453 
California 
553 
78,805 
3,804 
1,207,014 
767 
275,907 
Colorado 
249 
20,700 
122 
18,103 
691 
75,225 
Connecticut 
- 
- 
- 
- 
- 
- 
Delaware 
9 
9 
- 
- 
- 
- 
Florida 
4 
2,502 
35 
66,552 
5 
4,720 
Georgia 
- 
- 
- 
- 
- 
- 
Flawaii 
_ 
_ 
10 
72 
_ 
_ 
Idaho 
10 
800 
366 
34,416 
1,265 
124,412 
Illinois 
13 
849 
5 
2,270 
4 
1,566 
Indiana 
- 
- 
- 
- 
- 
- 
Iowa 
- 
- 
2 
(D) 
- 
- 
Kansas 
59 
4,886 
85 
8,940 
164 
8,124 
Kentucky 
7 
14 
7 
14 
- 
- 
Louisiana 
- 
- 
381 
262,118 
46 
20,281 
Maine 
- 
- 
- 
- 
2 
(D) 
Maryland 
6 
30 
3 
75 
- 
Massachusetts 
- 
- 
5 
425 
- 
- 
Michigan 
6 
6 
6 
6 
- 
- 
Minnesota 
- 
- 
2 
(D) 
- 
- 
Mississippi 
5 
730 
360 
349,924 
82 
38,704 
Missouri 
112 
27,679 
272 
257,309 
92 
58,052 
Montana 
16 
3,920 
379 
91,222 
416 
47,677 
Nebraska 
644 
84,864 
314 
31,666 
796 
88,348 
Nevada 
9 
1,440 
297 
62,524 
13 
1,200 
New Flampshire 
8 
8 
- 
- 
- 
- 
New Jersey 
- 
- 
3 
64 
15 
75 
New Mexico 
218 
18,070 
1,166 
46,591 
431 
14,794 
New York 
5 
(D) 
- 
- 
6 
(D) 
North Carolina 
- 
- 
- 
- 
North Dakota 
- 
- 
34 
7,390 
26 
4,925 
Ohio 
8 
8 
- 
- 
4 
4 
Oklahoma 
14 
633 
7 
1,051 
16 
2,013 
Oregon 
20 
1,865 
79 
10,801 
150 
41,296 
Pennsylvania 
6 
6 
- 
- 
- 
- 
Rhode Island 
- 
- 
- 
- 
- 
- 
South Carolina 
- 
- 
- 
- 
- 
- 
South Dakota 
_ 
_ 
21 
3,768 
9 
1,890 
Tennessee 
10 
776 
3 
878 
3 
878 
Texas 
79 
17,532 
237 
131,247 
321 
39,134 
Utah 
157 
28,690 
308 
48,978 
220 
32,002 
Vermont 
8 
(D) 
- 
- 
8 
8 
Virginia 
- 
- 
- 
- 
- 
- 
Washington 
6 
6 
30 
3,282 
206 
50,374 
West Virginia 
- 
- 
- 
- 
- 
- 
Wisconsin 
- 
- 
2 
(D) 
- 
- 
Wyoming 
892 
133,654 
24 
9,889 
300 
67,078 
Water Resources Regions 
Region 01 New England 
8 
(D) 
5 
425 
2 
(D) 
Region 02 Mid-Atlantic 
26 
50 
6 
139 
21 
81 
Region 03 South Atlantic-Gulf 
4 
2,502 
40 
66,802 
10 
5,000 
Region 04 Great Lakes 
22 
(D) 
6 
6 
12 
(D) 
Region 05 Ohio 
7 
14 
7 
14 
- 
Region 06 Tennessee 
8 
16 
_ 
_ 
_ 
_ 
Region 07 Upper Mississippi 
64 
2,082 
12 
(D) 
4 
1 ,566 
Region 08 Lower Mississippi 
87 
45,503 
1,546 
1,491,238 
405 
270,075 
Region 09 Souris-Red-Rainy 
- 
- 
2 
(D) 
6 
180 
Region 10 Missouri 
1,600 
189,632 
780 
152,850 
1,793 
242,424 
Region 11 Arkansas-White-Red .... 
127 
16,440 
339 
369,805 
536 
68,639 
Region 12 Texas-Gulf 
67 
9,654 
132 
98,834 
256 
35,288 
Region 13 Rio Grande 
192 
12,472 
1,241 
63,452 
106 
13,480 
Region 14 Upper Colorado 
186 
49,900 
130 
8,298 
478 
21,256 
Region 15 Lower Colorado 
24 
55,614 
1,100 
291,716 
110 
59,713 
Region 1 6 Great Basin 
110 
29,570 
505 
107,933 
142 
28,448 
Region 1 7 Pacific Northwest 
142 
14,111 
474 
46,789 
1,787 
219,070 
Region 18 California 
553 
78,805 
3,822 
1,193,244 
767 
275,907 
Region 19 Alaska 
- 
- 
- 
- 
- 
- 
Region 20 Hawaii 
- 
- 
10 
72 
- 
- 
' The subirrigation category was dropped as a separate category in 2013 and is now reported as Other Gravity Systems. 
^ More than one technique may have been used on an irrigated acre during the survey year. 
® The 2008 data equal the sum of irrigation water captured (tailwater pits), water restricted from running off the field, limited irrigation set times or number of irrigations, and alternative row irrigation. 
2008 data do not include non-horticultural field crops and pasture acreage on horticulture operations. 
® The 2008 data equal the sum of surge-flow or cablegation and applying mulch or other row covers. 
® The 2008 data equal gravity systems with laser leveling. 
^ The 2008 data equal the sum of the use of polyacrylamide (PAM), shortening of furrow lengths, and special furrowing techniques. 
184 2013 FRIS - Crops Grown in the Open and Pasture Data 
2012 Census of Agriculture 
USDA, National Agricultural Statistics Service 
