Arizona republican., 1910-03-02


 compared with other reliable data and in a few of such instances the testimony given has been disreEarded as uudouhted error.
 The amount of water flowing in the river varies greatly in each month in the year. in each year. and in given month in each year No accurate. or probable estimate of the amount of water that will he availa- ble either by the month or by the year can be predicted. table com piled from the records that have been kept by the water commissioner for the past fourteen years. showing the monthly average and the annual precipitation of rain and the daily average amount of water by months and by years that has been received by the canals from the river. k hereby made q part of this decision and filed herewith, and designated as Table No l.
 By the normal flow of the river. as that expression is used in this decision. is meant the flow of water in the river at its varying stages available for appropriation. The maximum normal flow is the total amount to which water has been ap- propriated. By flood water is meant water flowing in the river over and above the maximum nor mal flow. By surplus water" is meant the flow of the river. both normal and flood, not needed or used By stored water" is meant the water impoUnded in the ROose- Welt reservoir.
 The actual minimum normal flow is the total amount to which the land is entitled. as shown by the table hereinafter referred to. plus the estimated loss in carriage. and amounts in all to approximately 5S, 900 miners inches. The total prac ticable carrying capacity of all the various canals is roughly S7.000 min CTS inches The practical carrying capacity of the Tempe canal. through which is diverted the water supply ing the parcels of land generally not in the water users association. and therefore not to be entitled by con tractual relations with the govern ment to the benefits of the stored water. is roughly 16.0O0 miners inches.
 The amount of water necessary for proper and economical irrigation and cultivation of a given amount of land is perhaps the most difficult of satisfactory solutions of all the nU- merous questions arising in the case. The views expressed by the various witnesses are widely divergent The oretiCally for many years past. under tE" agreement as to diversion, the l.. d entitled to water under the
 and san Francisco canals has ,, tpplied herewith upon basis
 miners inches constant flow to each quarter section. measured at the head of the Tempe canal In reality the land has not had any such fixed quantity nor it's equiva- lent At times it has had more. at times less For the greater part of the time more land in the valley has been attempted to be cultivated than the water available would sup ply Upon the distributing agree ment before referred to. land older in cultivation and prior in right shared with later land the supply of water available during the low stages of the river. and each had diverted for large portions of many years less than the equivalent of the 6i miners inches. No record extending over any appre- ciable period of time has ever been kept as to the effect of given amount of water on a given amount of land. nor has the amount of water required for given amount of land been determined by any series of cX- periments with any constant or vary ing quantity of water. The character of the soil differs in different parts of the valley. some land requiring more water by reason of it's character than other land of different soil. These differences in. soil are not in land lying in defined boundaries. and thus perhaps susceptible of differen tiation. but are found all over the valley in such position and place ment as to make it impracticable to Scgrcgatc them. The amount of water necessary successfully and economically to cultivate given product, such as alfalfa. is greater than that necessary for another such as grain; and so through a long list of various products. These pro ducts are likewise scattered through out the valley and are not embraced each within its own separate con fines. The duty of water, by which expression l mean the amount of water necessary for the successful and economical cultivation of the land. in reality. therefore, differs with the different crops. and with the diff ferent soils to be found in the val ley under the conditions as they exist. But one standard. however. can he taken. since the variations
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