TABLE 11 

 RECORD OF WEEKLY EVAPORATION FROM SOIL AND USE OF WATER BY SALT GRASS IN TANKS AT SANTA ANA, CALIFORNU, MAY, 1929. TO SEPTEMBER, 1930> 



Week ending 



1929- 



May 

 May 

 May 

 May 

 June 

 JuDe 

 June 

 June 

 July 

 July 

 July 

 July 

 July 

 Aug. 

 Aug. 

 Aug. 

 Aug. 

 Sept. 

 Sept. 

 Spet. 

 Sept. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Nov. 

 Nov. 

 Nov. 

 Nov. 

 Dec. 



Evaporation from bare soil and use of water by salt grass in acre-incbes per acre 



Bare soil with fi-\ed water table three feet 

 below the ground surface 



Tank 

 No. 1 



Tank 

 No. 2 



Tank 

 No. 3 



Mean 



Xo evaporation from Tanks Nos. 

 1, 2 and 3 with water table at depth 

 of four feet, May 1 to October 1, 

 1929 



0.115 

 .084 

 .084 

 .074 

 .075 

 .105 

 .074 

 .081 

 .074 

 .004 

 .063 

 .053 

 .074 



.074 

 .074 

 .011 

 .010 

 .010 

 .032 

 .031 

 .021 

 .064 

 .043 

 .021 

 .021 

 .021 

 .021 

 .000 

 .021 

 .000 

 .084 

 .042 

 .010 

 .032 

 .000 

 .011 

 .000 

 .042 

 .022 

 Oil 

 .042 

 .021 

 .064 

 .010 

 .042 

 .042 

 .042 

 .033 

 .126 

 ,021 

 .032 

 .031 



.473 

 ,296 

 .173 

 .078 

 ,120 

 ,074 

 ,095 

 ,053 

 ,084 

 .056 

 .064 

 .025 

 .060 



,036 

 ,039 



007 

 ,014 

 .007 

 .018 

 .017 

 ,014 

 ,029 

 ,028 



OH 



018 

 ,024 



007 



018 



017 

 ,011 

 ,046 

 ,032 

 .021 

 ,021 

 .000 

 ,018 

 ,000 

 .018 



Oil 

 .010 



042 

 .028 

 .060 

 .021 



025 

 .014 



028 

 .015 



056 

 ,021 



036 



035 



Bare soil with fixed water table two feet 

 below the ground surface 



Tank 

 No 4 



.561 

 .445 

 .359 

 .275 

 ,296 

 ,233 

 .222 

 .232 

 085 

 .190 

 ,169 

 ,180 

 ,169 

 .170 

 .158 

 .157 

 .159 

 .158 

 .094 

 ,032 

 .105 

 .127 

 ,126 

 ,106 

 .147 

 .127 

 .126 

 ,106 

 ,127 

 ,075 

 .053 

 .053 

 .106 

 ,063 



,116 

 ,074 

 ,031 

 .021 

 .032 

 .021 

 .052 

 .074 

 ,021 

 .031 

 ,064 

 .010 

 ,053 

 ,032 

 ,063 

 .074 

 .084 



143 

 .063 

 ,074 

 ,042 

 ,095 

 ,073 



105 

 .105 

 .074 



095 

 ,095 

 .095 

 .137 

 .105 

 .116 

 .084 

 .105 

 .086 



127 

 ,074 

 ,094 



095 



Tank 

 No. 5 



600 

 ,597 

 ,523 

 .450 

 .449 

 .449 

 .355 

 .323 

 ,251 

 .229 

 ,188 

 ,177 

 ,167 

 293 

 .251 

 ,249 

 ,218 

 .241 

 ,261 

 ,177 

 ,W6 

 ,157 

 .166 

 ,156 

 ,125 

 ,178 

 ,187 

 .156 

 ,135 

 ,104 

 .137 

 .074 

 ,063 

 .104 

 .116 



.105 

 .074 

 ,010 

 ,000 

 .043 

 .031 

 .063 

 .042 

 ,021 

 .043 

 .074 

 .041 

 ,064 

 ,063 



115 

 ,095 



178 

 ,146 

 ,053 

 ,106 

 .104 



116 



126 

 .145 

 .105 



146 

 .156 

 .094 

 .125 

 .125 

 .125 

 ,136 

 ,137 

 ,135 

 ,157 

 ,177 

 ,137 



104 



125 



Tank 

 No. 6 



274 

 263 

 .232 

 ,223 

 ,210 

 .136 

 ,158 

 ,115 

 .180 

 ,168 

 ,180 

 -147 

 ,169 

 ,136 

 ,158 

 .126 

 157 

 155 

 184 

 .020 

 .084 

 105 

 ,073 

 .084 

 ,106 

 ,115 

 ,096 

 ,095 

 ,095 

 ,096 

 ,064 

 ,074 

 .042 

 .096 

 .063 



.074 

 .073 

 .032 

 .042 

 .032 

 .021 

 .063 

 .063 

 .042 

 .042 

 .032 

 ,031 

 ,042 

 .064 

 .021 

 ,073 

 ,063 

 ,116 

 063 

 063 

 ,031 

 ,063 

 064 

 084 

 ,084 

 ,053 

 ,094 

 ,084 

 ,085 

 ,126 

 ,053 

 094 

 074 

 073 

 085 

 085 

 105 

 074 

 084 



0,541 

 ,470 

 ,400 

 ,344 

 ,311 

 ,294 

 ,249 

 ,220 

 ,221 

 ,161 

 .186 

 .164 

 .172 

 .199 

 .193 

 .178 

 .177 

 .185 

 .201 

 097 

 084 

 ,122 

 .122 

 .122 

 .112 

 .147 

 .137 

 ,126 

 .112 

 .109 

 .092 

 .067 

 .053 

 .101 

 .081 



.098 

 .074 

 .024 

 .021 



Salt grass with fixed water table two feet 

 below the ground surface 



Tank 

 No. 7 



.024 

 .059 

 .060 

 ,028 

 ,039 

 .057 

 .027 

 ,053 



053 

 .066 

 .081 

 .108 

 , 135 

 ,060 



077 

 ,059 

 ,091 

 ,088 



111 

 ,098 

 .091 

 .115 

 ,091 

 .102 

 ,129 



094 

 .115 

 ,098 

 ,104 

 ,109 

 ,133 

 .105 



091 



101 



296 

 ,275 



275 

 .371 

 ,626 



964 

 ,975 



1 632 

 I 281 

 1 217 

 1 282 

 1 325 

 1 208 

 1 154 

 1 048 

 1,165 

 1,101 

 1 144 



,744 

 816 



.646 



.785 

 890 



,667 



.848 

 ,636 

 .647 

 .521 

 .413 

 .317 

 .286 

 .434 

 .435 



■ .297 



.148 



.137 



.192 



.243 



.211 



,286 



,222 



,201 



265 



,223 



,328 



,435 



.499 



,540 



,668 



678 



,382 



.647 



.721 



,953 



954 



1 134 



,890 



,974 



1 174 



1,133 



1 521 



1,454 



1 155 



1 303 



1 228 



1,068 



1 453 



1 312 



1 250 



996 



,891 



Tank 

 No. 8 



862 

 ,561 

 ,293 

 .429 

 .481 

 ,398 

 .670 



1 167 

 1 178 

 1 251 

 I 442 

 1,462 

 1 315 

 1 283 

 1 271 

 1 314 

 1 314 

 1,430 



840 

 .945 

 .661 

 ,881 

 ,998 



735 

 ,736 

 ,840 

 ,923 

 .661 

 .713 

 ,565 

 .429 

 ,324 

 ,313 

 ,471 

 ,460 



.345 



.031 



.000 



.105 



.250 



,187 



,313 



,136 



,188 



.281 



229 



,387 



.491 



,544 



,650 



.800 



.756 



.386 



,713 



,788 



1.062 



1 050 



1.231 



944 



1,051 



1 336 



1.272 



1 703 



1 555 



1 513 



1 597 



1 125 



1,167 



1 578 



1 410 



1 314 



1 050 



Tank 

 No. 9 



.801 



699 

 1,003 



,624 

 ,741 



1 111 

 1 007 



.975 



1,461 



1,154 



1,132 



1 323 



1 335 



1.176 



1,334 



1,166 



1,282 



1-227 



1 292 



868 



,890 



,605 



,838 



933 



689 



,689 



,817 



,784 



572 



.593 



.478 



.392 



.265 



.307 



,434 



,392 



,329 



,127 



063 



.148 



.244 



.169 



.318 



.146 



,211 



,275 



233 



,392 



,520 



,539 



,732 



,943 



921 



478 



764 



.953 



1,048 



,995 



1 228 



890 



964 



1 227 



I 217 



1 579 



1 505 



1 398 



1 452 



1 187 



1 123 



1 527 



1 389 



1 314 



1,049 



953 



818 



619 

 613 

 397 

 514 

 ,739 

 ,790 



873 

 1,420 

 1,204 



1 200 

 1,349 

 1,374 

 1 233 

 1 257 

 1 162 

 1 254 

 1,214 

 1 289 



,817 

 ,884 

 637 

 835 

 940 

 697 

 ,698 

 ,831 

 ,852 

 ,623 

 ,651 

 621 

 ,411 

 ,302 

 ,302 

 ,446 

 ,429 



.324 



.102 



.067 



.148 



.246 



,189 



,306 



.169 



.200 



.274 



228 



,369 



,482 



,527 



,641 



,804 



,785 



,415 



,708 



,821 



1,021 



1 000 



1 198 



908 



,996 



I 246 



1 207 



1 601 



1 505 



1 355 



1,451 



1 180 



1 119 



1 519 



1 370 



1 293 



1,032 



937 



,846 



Salt grass with fixed water table four feet 

 below the ground surface 



Tank 

 No. 10 



Tank 

 .No. 11 



105 

 074 

 ,053 

 .032 

 ,053 

 ,063 

 ,064 

 ,223 

 216 

 ,314 

 ,414 

 764 

 ,996 

 ,773 

 ,770 

 1,049 

 ,413 

 ,690 

 ,604 

 ,514 

 ,343 

 .403 

 540 

 403 

 ,233 

 ,073 

 ,414 

 ,340 

 243 

 .240 

 .270 

 217 

 .166 

 ,196 

 ,176 



,265 

 .084 

 052 

 ,106 

 ,169 

 084 

 ,127 

 ,169 

 .168 

 .147 

 .063 

 .116 

 .361 

 ,243 

 446 

 424 

 ,297 

 234 

 392 

 ,393 

 .415 

 .476 

 510 

 510 

 444 

 540 

 552 

 656 

 637 

 647 

 ,700 

 457 

 ,393 

 ,615 

 626 

 ,520 

 .435 

 402 

 ,382 



000 

 000 

 000 

 000 

 022 

 021 

 115 

 191 

 333 

 265 

 444 

 462 

 561 

 508 

 508 

 439 

 579 

 593 

 308 

 -466 

 -273 

 -138 

 445 

 -243 

 259 

 147 

 297 

 196 

 173 

 177 

 -138 

 -107 

 -138 

 099 

 114 



148 

 -043 

 000 

 000 

 021 

 -053 

 125 

 063 

 127 

 095 

 074 

 084 

 201 

 159 

 148 

 276 

 212 

 191 

 180 

 179 

 306 

 305 

 295 

 255 

 319 

 329 

 306 

 404 

 382 

 456 

 318 

 445 

 318 

 276 

 349 

 414 

 265 

 339 

 286 



Tank 

 No. 12 



180 

 277 

 -127 

 .096 

 .097 

 ,179 

 .234 

 .519 

 ,482 

 .366 

 587 

 ,636 

 ,823 

 ,944 

 870 

 373 

 .561 

 ,689 

 ,625 

 ,276 

 ,270 

 ,515 

 .737 

 .646 

 .487 

 ,343 

 ,123 

 ,021 

 .000 

 .000 

 .036 

 .070 

 .022 

 .222 

 .117 



.095 

 .063 

 ,010 

 Oil 

 ,010 

 .000 

 .032 

 .010 

 .021 

 .000 

 .000 

 ,074 

 ,064 

 ,115 

 ,159 

 ,190 

 ,212 

 .168 

 .170 

 .168 

 ,233 

 ,180 

 ,222 

 ,222 

 ,243 

 274 

 316 

 ,349 

 371 

 360 

 382 

 284 

 ,284 

 349 

 338 

 320 

 ,267 

 244 

 233 



095 

 .117 

 ,060 

 .042 

 .057 

 .088 

 .138 

 .311 

 .344 

 .315 

 .482 

 .621 

 .790 

 742 

 716 

 620 

 518 

 ,657 

 512 

 ,419 

 ,295 

 ,352 

 674 

 .431 

 ,326 

 .188 

 ,278 

 .186 

 ,139 

 .139 

 ,148 

 .131 

 .109 

 .172 

 .136 



.169 

 .063 

 .021 

 ,039 

 ,067 

 ,046 

 095 

 ,081 

 105 

 ,081 

 ,046 

 .091 

 .209 

 ,172 

 251 

 ,297 

 .240 

 .108 

 247 

 246 

 .318 

 .320 

 ,342 

 ,329 

 ,335 

 .381 

 391 

 470 

 ,463 

 .488 

 .467 

 .395 

 .332 

 .413 

 .438 

 ,418 

 ,322 

 ,328 

 300 



Bare soil with fixed water table two feet 

 below the ground surface 



Tank 

 No. 13 



,542 

 ,392 

 .488 

 ,552 

 ,318 

 ,531 

 572 

 ,499 

 ,490 

 ,403 

 511 

 435 

 403 

 371 

 ,295 

 ,159 

 ,128 

 ,211 

 ,286 



.137 

 .063 

 .137 

 .042 

 .106 

 .126 

 .148 

 ,169 

 ,181 

 ,203 

 .192 

 ,234 

 ,256 

 .290 

 278 

 .299 

 299 

 332 

 ,437 

 ,362 

 ,383 

 373 

 ,340 

 ,361 

 ,394 

 ,405 

 .405 

 ,459 

 415 

 .426 

 395 

 .321 

 375 

 ,427 

 386 

 ,342 

 .322 

 .311 



Tank 

 Xo. 14 



Tank 

 Xo. 15 



449 

 866 

 824 

 738 

 514 

 450 

 524 

 479 

 372 

 502 

 ,385 

 ,438 

 .417 

 ,385 

 ,309 

 310 

 245 

 ,206 

 ,246 

 192 

 267 



234 

 .140 



.235 

 .277 

 .211 

 .171 

 ,265 

 ,203 

 ,448 

 320 

 ,288 

 320 

 394 

 331 

 351 

 ,246 

 278 

 ,373 

 426 

 471 

 449 

 309 

 ,202 

 .277 

 342 

 406 

 ,514 

 428 

 469 

 405 

 352 

 427 

 427 

 437 

 288 

 247 

 299 



353 



1 465 

 1 197 

 1 336 



749 

 685 

 546 

 748 

 696 

 588 

 ,546 

 641 

 600 

 ,492 

 ,491 

 395 

 ,197 

 ,324 

 ,175 

 386 

 ,363 



.277 

 085 

 .097 

 .160 

 .160 

 .181 

 .256 

 ,255 

 203 

 331 

 .159 

 ,201 

 385 

 330 

 ,417 

 ,341 

 ,471 

 ,268 

 .394 

 .416 

 534 

 578 

 .524 

 ,426 

 ,439 

 589 

 514 

 .503 

 .727 

 514 

 .621 

 .438 

 .383 

 535 

 514 

 ,492 

 .405 

 .352 

 .394 



' All tanks covered during rains. Tanks Nos. 1 to 12, inclusive, contain undisturbed soil. Tanks Nos. 13 to 15, inclusive, contain disturbed soil. 

 4503— Bet. pp. 52-53 



