36 BULLETIN 1026, U. S. DEPAETMENT OF AGRICULTURE. 



the ditch. Owing to its position this reservoir does away with the 

 usual operation troubles at the lower end of long canals. The re- 

 maining reservoirs of the system are supplied by the Larimer County 

 Canal, and the water stored in them may be used only by exchange. 

 These reservoirs are listed below, with their capacities : 



Capacity in 

 Reservoir : acre-feet. 



Curtis Lake 780 



Rocky Ridge Reservoir 4, 730 



Kluver Lake 815 



Reservoir No. 4 987 



Long Pond 4, 017 



Lindenmeier Lake 918 



Ricliards Lake 1,056 



The water rights of the company in the Cache la Poudre are listed 

 on pages 14 and 16. The company also has decrees for appro- 

 priations made in other districts, but these are not listed. The 

 owners of rights in the Smith Ditch, with a single exception, ex- 

 changed their rights for stock in the compan3\ ^Yith this exception 

 the appropriations of the company are owned jointly. 



The system of water delivery on the Larimer County Canal is 

 comparatively simple so far as the user is concerned. At any time 

 there is water in the canal for direct irrigation he is entitled to his 

 pro rata share and may obtain it by notifying the ditch rider that 

 he wishes it turned out. The water delivered is measured over 

 rectangular weirs, and the riders carry tables from which the proper 

 depth over the weir may be* taken directly. These tables are based 

 on the delivery of 1.677 second-feet, or 40 " farmer's inches," to the 

 share. At this rate the 600 shares of the company require 406 second- 

 feet, and this demand is supplied by a flow of 485 second-feet in the 

 canal. Incidentally this indicates a loss of approximately 16 per 

 cent in the canal. However, the canal carries a full supply only a 

 short time during the season, and deliveries are usually made at the 

 rate of 20 or 30 " farmer's inches " to the share. To determine the 

 depth over the weir for the delivery of less than 40 inches to the 

 share, the number of inches is multiplied by the number of shares 

 to be satisfied and the result is divided by 40. The quotient is the 

 equivalent number of shares on a basis of 40 inches to the share, 

 and the corresponding depth is taken directly from the table. 



The amount of water to be carried in the canal at various times 

 is determined by the superintendent and the board of directors and 

 depends on the supply in sight and the disposal of it necessary to 

 finish the season in good shape. At the high stage of the river 

 plenty of water is usually received from the mountain ditches, on 

 exchange and on direct a])propriations, but as the suppl}^ diminishes 

 enough water is held up to insure proper irrigation of late crops, such 



