Recurring, then, to the inquiry as to the amount of land which a cubic foot per second of running water will irrigate, this area is in many of the new lands as low as 40 acres, and it seldom exceeds 80 acres with the old lands. Probably there are very few regions in the world where the demand of the soil for water is so great as here where the supply is so small. In California a cubic foot of water is said to be capable of irrigating more than a hundred acres, in India 200, and in Spain and Italy a much larger area. The reason is obvious. It is the direct consequence of the extreme aridity of the climate of Utah. The irrigating capacity of the unit of water is even less in the southern counties of Utah than in those around Great Salt Lake. Mr. Gilbert’s estimate of 100 acres for this last locality being accepted as the best that can be hoped for, it will not be rating the factor too low to say that 80 acres is the best that can be hoped for in the valley of the Sevier. The present factor will not, I am convinced, have a higher average value than 50 acres. The total acreage, therefore, which can be irrigated in the drainage system of the Sevier by the present system of watering and of agriculture may be estimated at about 43,000 acres, and the greatest improvements and economies in the system of farming and watering cannot, with the present water supply, be expected to raise the irrigable area above 70,000 acres. +----------------------------+------------+----------------+ | |Square miles|Acres cultivated| | Districts. |cultivated | during | | |during 1877.| 1877. | +----------------------------+------------+----------------+ |San Pete Valley | 17 | 11,000 | |Gunnison | 4.4 | 2,800 | |Sevier Valley above Gunnison| 16.5 | 10,500 | |Circle Valley | 1.2 | 750 | |Panguitch and above | 2.8 | 1,800 | | +------------+----------------+ | Total | 41.9 | 26,850 | +----------------------------+------------+----------------+