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Zeutschel OS7000, 400 dpi, 8 bit, 10,186,824 bytesthese points. The subject is intelligently discussed in Mr. Lippincott's report, and the conclusion is reached that for all practical purposes there are no disadvantages in storing the water supply at San Carlos, 60 miles above the Buttes, and no more loss of water to be anticipated than if the reservoir were located at the Buttes. Also that the flood discharge of the stream below San Carlos will be available for diversion below the Buttes during a portion of the year, and when such diversion is thus made the storage at San Carlos need not be drawn upon, which will increase the duty of the San Carlos reservoir. These conclusions are fully concurred in by the writer as sound and well based.SEEPAGE MEASUREMENTS.The growth of the river through the Solomonsville Valley above San Carlos, resulting largely from the return waters of irrigation percolating back to the streams through the soil, as determined by the measurements of Mr. Cyrus C. Babb, and detailed in his report, is one of the most instructive and interesting features of the present investigation. Mr. Babb found the total increase in 40 miles of the valley to be 153.8 second-feet, or 3.8 second-feet per mile. If this rate of percolation were maintained throughout the year, the annual volume thus returning to the river would be 111,400 acre-feet. This rate, however, can not be expected to continue through the entire year, although the contribution to the stream probably never ceases entirely. If the addition from this source be assumed as averaging about 50,000 acre-feet per annum, its importance can not be overestimated. If the irrigation of the 20,000 acres is capable of producing results of such magnitude, the complete irrigation of the valley above San Carlos should yield a much greater supply. Not the least important feature of this augmentation of the stream is the fact that the water comes back to it clear and free from silt. This fact may offer a partial future solution of the silt problem, for if the clear water could thus be gathered and the silt-laden river carried around the reservoir at times of maximum floods, the dilution of the water in the reservoirs by the clear seepage water would materially reduce the volume of silt which would have to be provided for. At present, however, the seepage water as it appears and augments in volume is successfully diverted and applied to the land again and again, and the net gain to the river at low-water stage is not apparent at San Carlos. CONCLUSIONS AND RECOMMENDATIONS. Summarizing the net results of the investigation, the conclusions to be drawn are as follows: First.That a minimum of 40,000 acre-feet of water annually should be stored for the supply of the Indian reservation. Second.That it is not feasible to obtain this supply from Queen Creek, although the dam and reservoir proposed on the stream are feasible of construction if a sufficient water supply were available. Third.That the Gila River is the only available source of permanent supply. Fourth.That it is not feasible or advisable to build a dam and reservoir on the Gila for storing so small a quantity as 40,000 acre-feet o