162 LANDS OF THE ARID REGION OF THE UNITED STATES. 
a small portion of its course in Utah, but lying within the boundaries of 
the Territory are 75 square miles of arable land which may be irrigated 
with its water. The river was measured in October, 1877, near its mouth, 
and flowed 734 cubic feet per second. High water usually occurs in 
June, and the critical period in the irrigation of the land is probably in 
August, when the stream should flow at least double the volume of 
October, or, 1,468 cubic feet per second. ‘This would be greatly m excess 
of the amount needed to irrigate the available land in Utah, and, from the 
best information attainable, it seems doubtful if it could be used higher 
up on the course of the stream. 
THE GREEN RIVER. 
Brown’s Park—Brown’s Park is a valley through which the Green 
River meanders. Three or four small streams head in the mountains to 
the north and a like number in the moutains to the south and find their 
way into the river in the midst of the park. But a small portion of the 
park lies within Utah and the small streams will be used for irrigation 
in the portion which falls in Colorado. The flood plain lands of the 
Green are extensive, and here many natural meadow lands are found, 
interspersed with fine groves of cottonwood. Some of the bench lands are 
well adapted to irrigation, but a portion of them and the foot hills back 
of them are naked, valueless bad-lands. 
When the general industries of the country shall warrant the great 
expenditure necessary, the Green will be taken out to irrigate the bench 
lands on either side. About 10 square miles of these bench lands will fall 
within Utah. 
Below Split Mountain Canon.—Lying along the Green, and between the 
foot of Split Mountain Canon and the mouth of the Uinta, are 50 square 
miles of arable land. Some portions of this may be subject to inundations 
at times of extraordinary floods, but the greater part is above high water 
mark, Green River here carries sufficient water to irrigate many times this 
amount of land, and while the cost for the construction of suitable dams 
and canals would be greater than on smaller streams, neither this nor the 
