120 LANDS OF THE ARID REGION OF THE UNITED STATES. 
be supplied. Still, a great extension of the irrigated area is inevitable, 
and I anticipate that when the water of the Weber has been carried as far 
as is economically practicable, not more than 15 miles of the plain will 
remain unsupplied. Deducting this amount, as well as the area served by 
the minor streams and springs of the plain, there remain 185 square miles 
dependent on the Weber and Ogden Rivers. The Ogden River has also to 
water 8 square miles in its upper course, and the Weber 84, making a 
total of 227 square miles dependent on the two streams. Whether they are 
competent to serve so great an area may well be questioned. On the 8th 
of October I found in the Ogden River, at the mouth of its canon, a flow of 
115 feet per second, and three days later the Weber showed 886 feet. 
There was almost no irrigation in progress at that time, and the total of 501 
feet included practically all the water of the streams. To irrigate 227 
square miles, the rivers need to furnish at the critical season (in this case 
about the 10th of July) 1,450 feet, or nearly three times their October 
volume. Of the ratio between their July and October volumes I have no 
direct means of judging, and the problem is too nice a one to be trusted 
to the estimates of residents unaided by measurements; but indirectly a 
partial judgment may be reached by comparing the rivers with certain 
tributaries of the Jordan which were twice observed. City Creek was 
measured on the 5th of July, and again on Ist of September, and Emi- 
gration and Parley creeks were measured July 5th, and again September 
3rd. These streams rise in mountains that are about as high as those which 
furnish. the Weber and its branches, and their conditions are generally 
parallel. Their measured volumes were as follows : 
a Ba ° 1 
“a oe 2 J 
ot rakes H 
a & HH 4 jee 
Ens my TS 3 | 
a loa = pS 
Streams. PoR eh | eof >| 
> oO a 7c 3 
re eu | ol a 
B+. mos 
em cle 
[ 2 4 3 2 = 
KH BR =| 
ity Creek: 3-F 2.04.2) 5 ee cesta She csr Ee oe Seen ee oe eee 119 |, 32 3.7 
Lia fae) NW ONGEd see emode pages oS e sess oor ea Ab Edcom ep meartiocbens so aceacosoredoosreeeeee 24 | 8 3.0 
) LEE TSG) so se Gna sanos cer deStnncemes cess Jocncon Asa sucpansSegqecooasucacnasoaneeted 72 29 2.5 
The comparison is not decisive, but it seems to show that the problem 
demands for its solution a careful examination at the ‘critical season.” If 
