FORM 13-A621(I) (09-23-2013) 
Vertical lift refers to the average surface-level feet-of-lift 
the pumps must raise the water in order to distribute the 
water through the field irrigation system. Discharge 
capacity refers to average pumping capacity in gallons 
per minute (GPM). Discharge operating pressure refers 
to the average operating pressure in pounds per square 
inch at the point of discharge. 
Section 7 - Energy Expense By Power Source for All 
Well and Other Irrigation Pumps Used On This 
Operation in 2013 
For each energy source report the number of well 
pumps and other pumps, the cost of the energy used to 
power pumps (include the landlord’s share of pumping 
costs), and the number of acres irrigated by water 
source. The sum of acres irrigated across all energy 
types may be less than the total acres irrigated for the 
operation reported in Section 2, item 4, column 2, Box 
C. The difference should equal those acres irrigated 
using no pumps to supply water to the field. 
Section 8 - Method of Water Distribution in Fields in 
the Open on this Operation in 2013 
This section refers to the method used to distribute 
irrigation water. Report the acres of land irrigated by 
each of the distribution systems listed. If the same land 
was irrigated by more than one method, then report 
acres irrigated by each method used. Note: Do not 
report information for the delivery system used to convey 
water from the source to the field. Report the method 
only for the field distribution system. 
item 1 - Gravity irrigation refers to the free flowing 
application of water across a field. The water is 
distributed across a field using either pipes or open 
ditches near the head of the field from which water is 
released to flow down furrows or to flood the field. 
Item la - Row crops are generally irrigated by water 
flowing down furrows. 
/tern 1b - Report the controlled flooding acreage for 
crops such as rice or cranberries which are flooded 
across the entire field with the water contained within 
borders or basins. 
item 1c - Uncontrolled flooding is often used to water 
pasture or rangeland. Water is directed to the area by 
artificial or controlled means but there are no furrows or 
borders within the field when uncontrolled flooding is 
used. 
ftem Id - Report acreage here if not reported in any of 
the above gravity system categories. 
Item 2 - Sprinkler irrigation is separated into six 
categories: center pivot, linear move tower, solid set and 
permanent systems, mechanical move systems, hand 
move systems, and other sprinkler systems. Use nozzle 
pressure for the pressure categories. 
Item 2a - A center pivot system uses a boom half the 
width of the field. It is anchored at the center of the field 
and sweeps in a circle. 
Item 2b - Linear move tower systems and other linear 
continuous move drive systems are self-propelled 
systems that travel in straight lines across the field. 
Item 2c - Report for solid set and permanent systems. 
Exclude low-flow micro systems. 
Item 2di - Mechanical move systems include side roll, 
wheel move, other mechanical move systems, and other 
discrete move systems. 
Item 2dii - Big gun or traveler systems use large 
pulsating sprinklers and travel across the area being 
watered. 
Item 2e - Hand move systems are any non-self- 
propelled system which must be moved manually. 
Item 2f - Report acreage here if not reported in any of 
the above sprinkler system categories. 
Item 3 - Drip, trickle or low-flow micro irrigation water is 
generally distributed by tubes or tapes which meter out 
small amounts of water at low pressure. 
Item 3a - Report acres on which on or above ground 
surface drip irrigation was used. 
Item 3b- Report acres on which sub-surface or root 
zone, drip was used. 
Item 3c - Report acres on which low-flow micro 
sprinklers were used. This refers to micro sprinklers that 
apply water at low pressure and are not self-propelled or 
easily moved. 
Item 3d - Report acreage here if not reported in any of 
the above drip, trickle, or low-fiow system categories. 
The total acres, by method of water distribution, should 
be equal to or greater than Section 2, column 2, item 4, 
total acres irrigated, Box C. Every acre reported as 
irrigated in Section 2 needs to be reported by method of 
irrigation in Section 8. If you use multiple methods of 
water distribution for the same acres, this sum may be 
larger than item code 0042. 
Section 9 - Acres Harvested in the Open and Crop 
Yields on This Operation in 2013 
Report the acres of each crop harvested and its 
corresponding average yield per acre separately for 
irrigated acres and for non-irrigated acres. Report acres 
of each crop harvested, even when multiple crops have 
been harvested off the same land. In addition, for each 
irrigated crop harvested, report the estimated average 
quantity of water applied per acre for the 2013 irrigation 
season. Report water applied in average acre-feet per 
acre or in inches per acre (but not both). Acre-feet per 
acre should be reported to the nearest tenth of a foot 
(for example, 1.6 or 2.3 acre-feet per acre), while 
acreinches per acre should be reported to the nearest 
whole inch (for example, 19 or 28 inches per acre). 
4 
2012 Census of Agriculture Appendix B B - 33 
USDA, National Agricultural Statistics Service 
