12 
That in all patents for lands hereafter taken up under any of the land laws of the 
United States or on entries or claims validated by this act west of the one hundredth 
meridian, it shall he expressed that there is reserved from the lands in said patent 
described, a right of way thereon for ditches or canals constructed by the authority 
of the United States. (Sundry civil act approved August 30, 1890; Statutes at 
Large, vol. 26, p. 391.) 
From this it appears that the portion of the original law approved 
October 2, 1888, which affected the withdrawal of the public lauds 
from entry, occupation, and settlement was repealed, but that the 
remaining portions of the law were unaffected by the act of repeal, 
and there is still on the statute books authority for making an exami- 
nation of the arid region of the United States, for ascertaining the 
capacity of the streams, and "for the selection of sites for reservoirs 
and other hydraulic works necessary for the storage and utilization of 
water for irrigation and the prevention of floods and overflows, and to 
make the necessary maps." 
In the repealing act it was specifically provided that the reservoir 
sites shalt remain segregated, and in an act entitled "An act to repeal 
timber-culture laws, and for other purposes," approved March 3, 1891, 
it is provided : 
That reservoir sites located or selected and to be located and selected under the 
provisions of "An act making appropriations for sundry civil expenses of the Govern- 
ment for the fiscal year ending June thirtieth, eighteen hundred and eighty-nine, 
and for other purposes," and amendments thereto, shall be restricted to and shall 
contain only so much land as is actually necessary for the construction and mainte- 
nance of reservoirs ; excluding so far as practicable lands occupied by actual settlers 
at the date of the location of said reservoirs. (Statutes at Large, vol. 26, p. 1101.) 
Under the various laws above cited, systematic measurements of the 
streams of the arid regions were begun as part of the irrigation survey, 
and were continued after August 30, 1890, as incidental to the topo- 
graphic surveys and selection of reservoir sites, the amounts allotted 
to this work being, however, as previously stated, barely sufficient to 
preserve from loss the valuable data already obtained and to continue 
to completion series of measurements for which by far the greater part 
of the necessary expenditures had been incurred. The publication and 
diffusion of the information relating to streams of the West, even 
though fragmentary, brought emphatically to public attention the 
necessity of such work and of obtaining more detailed facts concern- 
ing the water resources of all parts of the country. As a result of this 
general appreciation, Congress, by act of August 18, 1894, made a 
specific appropriation for this class of work, as follows : 
For gaging the streams and determining the water supply of the United States, 
including the investigation of underground currents and artesian wells in the arid 
and semiarid sections, twelve thousand five hundred dollars. ( Digest of Appropria- 
tions for 1895, p. 270.) 
A further appropriation by act approved March 2, 1895, will make 
available on July 1, 1895, an additional sum for continuing this work 
until June 30, 1896. This bulletin, as relating to the field work for 
