32 BULLETIN 1026, U. S. DEPARTMENT OF AGRICULTURE. 
canal are made through Powell gates which are kept locked so that 
they may be raised or lowered only by the ditch rider. The water 
delivered is measured over a rectangular weir, the depth over the 
weir being determined from tables carried by the rider, which 
show the depth to be carried over any crest length from 1 foot to 12 
feet for any number of rights from J to 68. In general, the water 
supply from the river is prorated among the users in accordance 
with the number of shares of stock which they hold, and to get the 
water to which he is entitled the user has only to notify the rider of 
the main ditch, or else the rider of the lateral from which he gets 
his supply, who will in turn notify the rider of the main canal. In 
times of very short supply a system of rotation of the supply between 
sections of the canal is instituted to avoid the wasteful practice of 
prorating a small supply. The company recognizes and encourages 
the practice of rotation of water among users, and the stockholders 
may have their water delivered to any lateral upon request. No 
records are kept of the delivery of water received on direct appro- 
priations. Reservoir water and water received on direct appropria- 
tions are not run at the same time, and usually after the running of 
reservoir water is started the small amount received on appropria- 
tions from the river goes to make up losses in the canal or to pay 
for water advanced to the canal earlier in the season by the Windsor 
Reservoir. 
Considerable care is used in the distribution of reservoir water, 
and complete records are kept by the secretary of the company. 
Before any water is delivered all carriage charges must be paid 
and credit entered on the books of the secretary. The delivery 
record of each user occupies one large sheet, 8 by 27 inches, of a 
loose-leaf book. Heading each sheet is the name of the owner, 
with a space in which may be entered the name of the tenant. 
At the left of the sheet there are blanks opposite the names of the 
various reservoirs in which may be entered the total number of 
rights of each with which the user is credited. Below are columns 
in which any debits or credits may be entered during the season. 
The right side of the sheet is devoted to records of delivery, with 
columns for every day from July 15 to September 15 and others 
in which are entered the name of the person ordering the water 
delivered and the lateral to which it was delivered. Under the dates 
are entered the numbers of " rights " delivered on that date. While 
this form of record is too large to be handled conveniently, the 
advantage of having the entire record on one sheet is obvious. 
Deliveries and credits may be compared at a glance for the benefit 
of users who inquire as to the standing of their accounts, and in 
addition there is little chance of any user exceeding his credit. 
