J. W. POWELL’S REPORT ON SURVEY OF THE ROCKY 
MOUNTAIN REGION. 
DETER 
FROM 
THE SECRETARY OF THE INTERIOR, 
TRANSMITTING 
Report of J. W. Powell, geologist in charge of the United States Geographical 
and Geological Survey of the Rocky Mountain Region, upon the lands of 
the Arid Region of the United States. 
APRIL 3, 1878.—Referred to the Committee on Appropriations and ordered to be printed. 
DrePARTMENT OF THE INTERIOR, 
Wasuineton, D. C., April 3, 1878. 
Sir: I have the honor to transmit herewith a report from Maj. J. W. 
Powell, geologist in charge of the United States Geographical and Geolog- 
ical Survey of the Rocky Mountain Region, upon the lands of the Arid 
Region of the United States, setting forth the extent of said region, and 
making suggestions as to the conditions under which the lands embraced 
within its limit may be rendered available for agricultural and grazing 
purposes. With the report is transmitted a statement of the rainfall of the 
western portion of the United States, with reports upon the subject of 
irrigation by Capt. C. E. Dutton, U.S. A., Prot. A. TH. Thompson, and Mr. 
G. K. Gilbert. . 
Herewith are also transmitted draughts of two bills, one entitled ‘A 
bill to authorize the organization of pasturage districts by homestead settie- 
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