There are various places also near the mouths of desert canyons, where small amounts of water are obtainable for irrigation purposes from intermittent streams. The total number of acres irrigated in 1899 was 504,168, an increase of 124.7% in the decade.
The eastern half consists for the most part of a rich upland plain, abundantly irrigated by wells, rivers and canals, while the western portion, though rich in mythological association and antiquarian remains, is comparatively unfavoured by nature.
About 20% of the cultivated area is irrigated by canals, 2% by wells and 3% by perennial streams. Throughout the province the area in which well-cultivation is possible is extremely limited, and the field has already been covered.
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