66 



After the woirs have ])een set n>a(lings are made at fr(H|iient inter- 

 vals and recorded, so that at the end of a season the records of the 

 engineer will show liow nuicli water has been used by each ditch 

 throughout tjie season, when use began, and when it ceased. These 

 records \\all give the court full information as to the use of water at the 

 present time. 



The location of canals and of the land irrigated is ascertained by 

 careful instrumental survey, in which distances are determined by 

 stadia and elevations by vertical angles. From these surveys three 

 sets of maps are made, known as the unit maps, the diversion maps, 

 and the division maps. A division map shows a large section of the 

 stream system. Each unit map represents a single numbered section 

 and shows all diverting ditches and laterals, the positions of all measur- 

 ing devices, the boundaries of each individual farm, what portions of 

 each farm are irrigated, the locations of orchards, buildings, towns, 

 "streets, roads, and other natural or cultural features. Contours are 

 also shown. The diversion maps show each ditch syst em complet e and 

 give the same data. On the unit and ditch maps each farm is num- 

 bered. This farm number is recorded in a book called the "Register 

 of rights," in which, opposite the farm num])er, is written the name 

 of the owner of the water right for that farm. There is space for 

 recording changes in ownership. 



Wliile making field surveys the engineer's assistants collect informa- 

 tion as to the time of construction, the first use of water, and all sub- 

 sequent changes. The facts collected regarding each ditch are 



recorded in a book called " Record of diversicm No. ." The book 



contains blanks for the facts required by law (see p. 63), there l^eing a 

 blank for th/3 ditch as originally constructed and one for each subse- 

 quent change. 



After the surveys of a ditch are completed and the information as to 

 dates of original construction and enlargements have been brought 

 together, a meeting of those interested is called, the facts collected are 

 discussed, and the people come to an agreement as to what they will 

 claim for their ditch. The records of diversions will be filed with the 

 court when the matter comes l)efore it. 



The surveys of the Weber have not been coni])lete(l. The engineer 

 estimates that this survey will take six years and that the entire 

 expense will be .fSO.OOO. The area irrigated is a])])roxinuitely 75,000 

 acres, nuiking the expense slightly more than SI ])er acre for the lands 

 now irrigated. This is all borne by the State. This matter was fully 

 discussed before tlie law was ])assed, and bankers and other large tax- 

 payers said they were willing to bear their ]:)art of this expense for the 

 sake of the general prosperity it woiUd induce. When the matter 

 comes })efore the court the fees of referees and stenographers are al^O 

 to be borne b}^ the State. 



