TABLE 14 



SUMMARY SHOWING MONTHLY USE OF WATER BY SALT GRASS. TULES, CAT-TAILS, WILLOWS, AND WIRE RUSH, AND EVAPORATION FROM 



SOIL AND WATER SURFACES, MAY, 1930, TO APRIL, 1931. IN TANKS AT SANTA ANA, CALIFORNIA* ' 



Tank 

 No. 



I--- 

 2.-- 



3 -- 



Mean. 



4 -- 



6..- 

 6..- 



Mean. 



9 

 Mean 



10... 



11 . 



12 - 



Mean 



13 ., 



14 .. 



15 . 



Mean 



16 .. 



19 .. 



20 -. 

 21... 

 22- - 

 23 -. 

 24-.. 

 25 .. 



Content of tank 



Bare soil planted to salt grass October, 1930 

 Bare soil planted to salt grass October. 1930 

 Bare soil planted to salt grass October. 1930 



Bare soil planted to salt grass October, 1930 



Bare soil planted to salt grass October, 1930 

 Bare soil planted to salt grass October. 1930 

 Bare soil planted to salt grass October, 1930 



Bare soil planted to salt grass October. 1930 



Salt grass sod'. 

 Halt grass sod'- 

 Salt grass sod' 



Salt grass sod' - 



Salt grass sod=. 

 Salt grass sod-. 

 Salt grass sod ^ 



Salt grass sod*. 



Bnre soil planted to salt grass October. 1930- 

 Baresoil planted to salt grass October. 1930- 

 Bare soil planted to salt grass October, 1930- 



Bare soil planted to salt grass October, 1930^ 



\Vater in circular sunken tank 



Hound stem tides in submerged soil' 



Water in s andard Weather Bureau pan. 

 Triangular stem tules in submerged soil' 



Cat-tails in submerged soil'. 



Round stem tulea in submerged soil' 



Willow* - 



Wire rush* 



Depth to 



water 



table, in 



feet 



2-1 

 2-1 

 2-1 



4-5 

 4-5 

 4-5 



4-5 



Amount of water used in inches of depth 



May 



147 

 043 

 147 



358 

 398 

 .284 



3 180 

 3 485 

 3 709 



3 458 



1 655 



1 003 



.792 



1 600 

 1 590 

 1.880 



1 090 



5 988 

 22 565 



6 792 

 12 301 

 11 875 

 10 230 



3 275 



June 



075 

 021 

 .043 



368 

 .564 

 295 



4 426 

 4 834 

 4 563 



2 173 

 1 292 

 1 024 



1 575 

 1.366 

 2.138 



1 C93 



li 440 

 23 088 



6 948 

 15 896 

 13 520 

 12 428 



4.988 



July 



138 

 074 

 242 



485 

 573 

 421 



5 740 



6 664 

 281 



2 720 

 1 707 

 1 545 



1 854 



1 914 



2 472 



2 080 



7 824 

 28 595 



8 544 

 23 286 



16 906 



17 211 

 7 343 



August 



158 

 .000 

 095 



.084 



422 

 586 

 326 



5 697 



6 056 

 5 894 



2,461 

 1 473 

 1 414 



1 699 



1 792 



2 213 



1 901 



6.744 

 24 793 



7 392 

 24 292 



14 924 



15 946 

 7 803 

 5 735 



September 



221 

 000 

 242 



154 



422 

 595 

 390 



4 314 

 4 600 

 4 505 



1 898 

 1 410 

 1,170 



1 489 

 1 399 

 1 782 



1 557 



5 588 

 19 754 



5.828 

 21 942 

 11.210 

 13 058 



6 628 

 6 427 



October 



232 

 .053 

 074 



349 

 .429 

 368 



.382 



1 250 

 1 288 

 1 308 



1 302 



5 032 

 18 352 



5 500 

 21 012 

 10 140 

 12 043 



5 359 



5 682 



November December 



274 

 .000 

 021 



.380 

 388 

 285 



I 187 

 881 

 ,784 



,951 



1 407 

 1 741 

 1,751 



1 033 



3 816 

 12 956 



4 262 

 15 031 



7 427 



8 602 

 3 545 

 5,031 



204 

 042 

 ,126 



336 

 314 

 295 



1 834 



2 084 

 2 066 



1 995 



635 

 430 

 ,549 



538 



1 515 



2 063 

 1 805 



1 794 



3 144 

 8 024 

 3 312 

 6 405 

 5 214 



3 322 

 2,115 



4 233 



January 



116 

 043 

 158 



,221 

 ,305 



1,141 

 1 129 

 1 344 



274 

 .242 



.938 

 .896 

 .882 



.905 



2.194 

 3 730 

 2 890 



2 894 



3 007 

 2 587 



2^654 



February 



074 

 084 

 168 



444 

 .730 

 336 



830 

 508 



1 263 



2.472 

 2,365 

 2,736 



2 165 

 2 100 

 2 201 

 2 005 

 2,950 



March 



601 

 ,454 

 .401 



1.267 

 2.231 



1 749 



2.035 



2 084 

 2.247 



2.122 



.891 

 729 

 710 



2 191 



2 514 

 3,199 



2,635 



5 454 

 5 183 

 5 778 



5 901 

 847 

 8 553 



3 922 



6 781 



April 



0-517 

 ,571 



2 426 

 3,214 



1 145 



2,262 



2 618 

 2 581 

 2 820 



1,602 

 773 

 ,450 



2 759 

 2,909 

 3,081 



2 916 



5 212 



8 386 

 6,016 



9 789 

 7 891 



11 508 

 5 724 

 7 761 



Number 

 of months 

 of record 



Total 

 amount 

 used, in 



inches 



59 908 

 177 790 



65 998 

 160 974 

 111 067 

 117 689 



52 707 



40,260 



Per cent of 



Tank 

 No. 16 



100 

 290 8 

 110 2 

 268 7 

 185 4 

 190 4 

 91 3 

 110,7 



Tank 

 No. 20 



90 8 

 269 4 

 100,0 

 243 9 

 168 3 

 178 3 



83 5 

 105 8 



1 Water table raised from two feet to one foot October, 1930, 



> Water table lowered from four to 6ve feet October, 1930. 



■ Tanks Nos. 1 to 12, inclusive, contain undi.sturbcd soil. Tanks Nos. 13 to 15, inclusive, contain disturbed soil. 



* Rainfallinckided in water used but changes in soil moisture on account of rainfall disregarded. 

 'Tanks Nos. 1 to 15, inclusive, covered during rains, 



• Totals are not given for soil moisture tanks as conditions are not comparable throughout the vear due to changing water levels and planting new grass, 

 » Not applicable to field conditions. 



4503 — Bet, pp. 52-53 



