CONCRETE LINING FOR IRRIGATION CANALS. 
measurements — Continued. 
17 
Loss per mile. 
Loss per 
Maxi- 
mum. 
Mini- 
mum. 
Mean. 
foot of 
wetted 
area in 
24 hours. 
Character of material 
in the channel. 
Source of informa- 
tion. 
Remarks. 
Per 
cent. 
Per 
cent. 
Per 
cent. 
29.80 
8.50 
8.90 
19.20 
13.80 
3.80 
9.00 
10.70 
29.30 
35.40 
12.70 
18.20 
Cu. feet. 
1.84 
.68 
.79 
1.68 
1.63 
.49 
LSI 
1.98 
2.23 
5.69 
2.2 
3.33 
Medium clay loam. . . 
do 
Deep medium clay 
loam. 
Rather porous clay 
loam, hardpan at 3 
feet. 
Deep uniform clay 
loam, hardpan at"2 
to 2§ feet. 
Medium clay loam, 
hardpan at 2 feet. 
Deep uniform sandy 
loam. 
Report D.H. Bark, 
9th Biennial Re- 
port State Eng. 
Idaho, 1911-12. 
do 
do 
Measured Sept. 13, 1912, 4 
miles southeast of Twin 
Falls. Regular cross sec- 
tion; somewhat eroded; no 
weeds; used 5 years. 
Measured Sept. 12, 1912, 7§ 
miles southwest of Twin 
Falls. Clean clover sod on 
banks; uniform cross sec- 
tion; used 3 years. 
Measured Sent. 9, 1912, 2 
do 
do 
do 
miles west of Filer. Clean 
uniform cross section; used 
4 years. 
Measured Sept. 12, 1912, 7 
miles southwest of Twin 
Falls. Uneven cross sec- 
tion; much moss; water 
near top of bank; used 4 
vears. 
Measured Sept. 14, 1912, 6J 
miles southwest of Twin 
Falls. Uniform cross sec- 
tion; 1,000 feet new dike; 
used 5 years. 
Measured Sept. 11, 1912, 6 
do 
do 
miles southwest of Twin 
Falls. Upper part fairlv 
uniform cross section; lower 
part somewhat irregular, 
with weeds; used 5 vears. 
Measured June 6, 1912, 2 
miles east of Wendell. 
Carryingonly half capacity; 
clean uniform cross sec- 
tion; used 4 years. 
Measured June 6, 1912, 1 
Gravelly, sandy loam 
Very gravelly and 
porous. 
Very gravelly 
do 
do 
mile south of "Wendell. 
Clean uniform cross sec- 
tion; no erosion; carrying 
only one-fourth capacity; 
used 3 vears. 
Measured Aug. 26, 1912, 5 
miles southwest of Rigby. 
Partly in dike; fairly uni- 
form cross section; alfalfa, 
moss and sweet clover 
growing in channel; used 5 
vears. 
Measured Aug. 25, 1912, 4 
miles southwest of Rigby. 
Uniform cross section; 
heavy growth of weeds and 
moss" in channel; low ve- 
locity; used 6 years. 
Measured Aug. 25, 1912, ih 
do 
Medium gravellv . . . 
do 
miles southwest of Rigby. 
Irregular cross section; 
some weeds and sweet clo- 
ver growing in channel; 
used 6 years. 
Measured Aug. 24, 1912, 7 
miles southwest of Rigby. 
Uniform cross section 
some gopher holes in bank 
used 7 years. 
48307°— Bull. 126—14—2 
