50 BULLETIN 339, U. S. DEPARTMENT OF AGRICULTURE. 
TaBLE XXIV.—Seepage losses from canals—Continued. 
i [ 
| = _ Loss 
Aver- Dis- 
age | Area | Wet-| charge | Total Lene = eee 
width SRG ted at loss see Loss ae ae Loss 
No.| of per- | upper in cn per | wettea| Pet Remarks. 
water ee i end of | sec mile mile 
ur- | “#°° |eter.| sec- | tion F ares 
ae So served. per 24 
e hours. 
Square Second-| Second- Second-| Cubic | Per: 
Heer) feet. =| Heet..| feet. feet. Miles.| feet. feet. cent. 
86 | 68.1 | 125 68.8 207 8.4 4.185 2.0 0. 480 1.0 | Clay eam: hardpan, lava 
rock. ae 
87 | 22.4 67.7 | 27.0 214] 10.2 3. 090 3.3 2. 001 1.5 | Gravel and clay loam. 
88 | 21.3 TASS |i Ze 242 1.33 3. 530 Bets: . 224 0.2 | Heavy gravel. 
89 | 26.4 91.6 | 31.0 243 Su Gutee 12920 1.88 . 988 0.8 | Compact clay loam. ~~ 
90 | 21.0 96.0 | 28.8 244 SUD) BEd) . 04 . 021 0.01 | Banks sandy. 
91 | 21.9 101.4 | 30.8 260 10.0 2. 450 4.1 2. 048 1.6 | Very sandy sidehill. 
92 | 24.8 106 33.0 265 3.4 2. 850 1.19 . 502 0.4 Sandy loam. 
93 | 25.8-| 107 31.3 270 | —2.0 2.110 OOK eee 0.4 | Cement gravel. 
94 | 25.1 113 32.8 272 6.0 2. 440 2.5 227 0.9 Sandy loam. 
OSaiela sults 36.0 295} 13.6 2. 260 6.0 2. 735 2.0 | Porous gravels, evidently 
seepage. 
96 | 68.0 159 70. 5 308 8.4 3. 870 De 2 - 500 0.7 | Clay loam and lava. 
97 | 68.0 | ,171 70.3 332 | 24.3 4,180 5. 8 Ee35 1.7 | Clay loam, hardpan. 
9871/3220) | 122 36.5 333 | —.76 | 2.620 By 308 eee 0.1 | Impervious clay loam. 
99 | Cik-| Basin. |22=--- B44 of SES ane se eres |e ae ep Clay loam, hardpan. 
100 | 38.3. | 142 42.4 420 | 12.5 5. 840 2.1 . 826 0.5 | Gravel, sand, clay. 
LO (Ch2k-|sBasinea|--2—s- 707 (| Pinos Se a | et S| Pee aaa Oe aAl ag os Bee ee 2 Clay loam, hardpan. 
102 | 53.5 | 265 57.0 760 | —4.0 2.180 L.84 Were Ss 22 0.2 Gain, gravel. 
103 | 56.7 | 288 61.4 783 | 10.4 2. 260 4.6 1. 227 0.6 | Compact gravel and clay. 
104 | 53.0 | 290 58.9 788 |—12.7 2.140 RU Wee eeece 0.8 | Composite clay and clay 
irrigated land above canal. 
105 | 57.0 | 316 62.6 832 11.1 2. 060 5.4 1.408 | 0.6 Uniform clay loam. 
106 | 66.0 | 319 64.8 877 | 20.9 2. 940 Tak 1408 |- 028 Do. 
OKO) [Sse cere cece at Pans aaa 1,615 | 108 3-41 0ulpo lies) sao | 2.0 | Varying clay loam. 
iOS ee | eee ee ee ee 13755.) 126 HSETO Aaa eee 1.4 Botton on creyiced lava 
rock. 
TOOR RS rss es ee 1,870 | 108 S41 OS 25S en Sesame 0.7 | Coulee and ditch. 
TIO) (SS Ge Ses oe eee eee ame 1,890 | 19.2 2.750 TsO mat eee 0.4 | Gravel, sidehill. 
AAT ee es |) epee safe Se 2,006 | 116 827905| slda2 melee 0.7 | Clay Sous creviced lava 
rock. 
TAT: | ee eee | PU apes 74 BV 13.5 4.390 B Sai Et eee 0.1 | 4concrete lined, $clay. 
113 |104.0 | 784 TGS |) Pe TBYA |) CBE 5. 350 17.4 2. 574 0.6 Deep uniform clay loam. 
114 |107.3 829 114.3 | 2,798 | 30.4 6. 070 5.0 . 719 0.2 Do. 
115 |107.5 831 114 2,857 | 27.0 2. 650 10,2 1. 462 0.4 Do. 
TGs eee Ss Bese es ee Ee ee 2,934 54S Osos oc eeelaseeieee en eee eee Reservoir. 
117 }118.0 | 955 {123 3,097 | 148 5.050 | 29.3 3. 899 0.9 | Deep clay loam. 
118 |123.0 | 984 {129 3,192 | 167 3.350 | 49.9 6. 324 1.6 | Clay loam, underlain by 
creviced lava rock. 
Table XXV shows the range of the losses to which the canals were 
subject in per cent per mile and in cubic feet per square foot of wetted 
area per 24 hours. 
TABLE XXV.—Range of seepage losses from canals. 
Loss per 
Per mile. | Sauare foot 
Per cent. | Cubic feet. 
5 é 
Minimumrloss ay Ate ee Se ee ee) ee ae eee 1 —5, 
Mam Want Loss nck ede ed ee aaa a RR 0m Sep pee A en Ae pe ee 58.3 Me G@ze2 
‘A‘verage loss :(109: sections)! 2 (e342 = 2 oy ee Pa es Deen ha a) a ee eee | 7.4 1.21 
1 Gain. 
The effect of capacity and other factors upon the losses is shown by 
the curves in figure 13, which are based upon all of the data secured 
after eliminating the few sections which showed a gain. These curyes 
