44 
BULLETIN 115, IT. S. DEPARTMENT OF AGRICULTURE. 
The average cost of vitrified-clay deliveries with iron gates, as 
given by the chief engineer of the Holbrook irrigation district, near 
La Junta, Colo., is as follows : 8-inch pipe and gate, $27.70 ; 10-inch, 
$30; 12-inch, $35, 15-inch, $10. 
DELIVERY GATE, SUNNYSIDE UNIT OF YAKIMA PROJECT, UNITED STATES 
RECLAMATION SERVICE, WASHINGTON. 
The intake of a tube delivery or turnout gate unless set at just the 
right point is a great source of annoyance because of the silt and 
sand that gathers just in front of the gate when it is not in use. To 
obviate this condition, remove the tendency of the eddies in the enter- 
ing water to scour the canal bank, and preserve as much as possible 
the unbroken side of the canal the United States Keclamation Serv- 
8-/2"p/pej/f4cjage. 16"l8"pipe '/2g'.Y 
P /y pe. 
acA/a/ sech'o/7. 
4 Position of" intake with reference to 
canal section to be determined 
on the around. 
Ui5'A 
Fig. IS 
-Tube delivery extending into canal, Sunnyside unit, Yakima project, 
States Reclamation Service. 
United 
ice is using a system of installation on the Sunnyside Canal in 
Washington which is very favorable to canal operation. 
A riveted-steel pipe extends out into the water of the canal, as 
shown in figure 12, being supported at the front end by the gate 
standards which are carried down to a footing wall. The steel pipe 
is carried a short distance into the bank where it meets a concrete 
pipe in a concrete cut-off collar. This installation does away with a 
wood or concrete face slab at the entrance to a tube outlet when set 
flush with the bank and also removes the opening in the tube from 
danger of becoming clogged with silt and trash. 
The only place that comes to the writer's mind where such a con- 
struction, cost permitting, might not be used, would be where it is 
necessarv to dredge silt out of the canal or lateral. In such cases 
