confidential information and is provided even though 
other information is withheld. 
SPECIAL STUDIES AND CUSTOM 
TABULATIONS 
The 2013 Farm and Raneh Irrigation Survey data, as 
well as the 2012 Census of Agrieulture Volume 1 
Geographie Area Series and related reports, are 
available on the NASS website at 
www.nass.usda.gov. 
Custom-designed tabulations may be developed 
when data are not published elsewhere. These 
tabulations are developed to individual user 
speeifieations on a eost-reimbursable basis and 
shared with the publie. Quiek Stats, NASS’s online 
database that allows data users to build eustomized 
queries, should be investigated before requesting a 
eustom tabulation. 
All NASS publieations and eustom tabulations are 
subjeet to a thorough diselosure review prior to 
release to prevent the diselosure of any individual 
respondent data. Requests for eustom tabulations ean 
be submitted via the internet from the NASS home 
page, by mail, or by e-mail to: 
DataLab 
National Agrieultural Statisties Serviee 
Room 6436A, Stop 2054 
1400 Independenee Ave, S.W. 
Washington, D.C. 20250-2054 
ABBREVIATIONS AND SYMBOLS 
The following abbreviations and symbols are used 
throughout the tables: 
Represents zero. 
(D) Withheld to avoid diselosing data for 
individual farms. 
(H) Coeffieient of variation is greater than 
or equal to 99.95 pereent or the standard 
error is greater than or equal to 99.95 
pereent of mean. 
(L) Coeffieient of variation is less than 
0.05 pereent or the standard error 
is less than 0.05 pereent of the mean. 
WRR Water Resourees Regions. 
(NA) Not available. 
(X) Not applieable. 
(Z) Less than half of the unit shown. 
(ewt) Hundredweight. 
gpm Gallons per minute. 
psi Pounds per square ineh. 
sq. ft. Square feet 
or 
Datalab@nass.usda.gov 
2012 Census of Agriculture Introduction VII 
USDA, National Agricultural Statistics Service 
