Table 20. Soil salinity on Padre Island by topographic position. 





North Padre 



South Padre 



Date 



Beach 



Top of dune 



Beach 



Top of dune 



Hurricane pass 





o 



6 







6 



o 



6 







6 



| 6 





(inches) 



(inches) 



(inches) 



(inches) 



(inches) 



Nov. 70 



455 



671 



434 



389 



2,264 



789 



450 



570 



5,500 



2,150 



Dec. 



310 



58 



213 



118 



69 



305 



50 



247 



40 



80 



Jan. 71 



583 



68 



237 



64 



476 



475 



65 



23 



700 



525 



Feb. 



3,850 



325 



2,733 



512 



5,458 



1,204 



1,493 



487 



4,750 



1,400 



Mar. 



2,108 



408 



2,117 



5,555 



2,458 



912 



1,273 



287 



2,850 



1,350 



Apr. 



1,358 



558 



1,325 



2,129 



6,700 



1,470 



1,317 



453 



9,300 



2,125 



May 



3,533 



364 



3,583 



5,300 



2,864 



4,275 



168 



135 



1,700 



1,775 



June 



1,996 



475 



3,183 



925 



168 



128 



131 



62 



175 



500 



July 



1,246 



692 



2,067 



1,120 



176 



75 



47 



37 



270 



835 



Aug. 



40 



65 



32 



147 



42 



48 



43 



38 



72 



500 



Sept. 



232 



359 



65 



170 



423 



67 



102 



75 



1,412 



2,030 



Sept. 



81 



59 



95 



87 



8,333 



5,783 



3,883 



1,737 



8,250 



5,250 



Oct. 



233 



108 



505 



160 



478 



400 



420 



340 



950 



4,000 



Nov. 



2,275 



725 



3,000 



367 



686 



482 



620 



417 



6,750 



2,400 



Dec. 



208 



166 



143 



520 



1,265 



437 



367 



243 



1,800 



2,100 



Jan. 72 



3,283 



1,613 



1,755 



2,732 



1,600 



1,540 



1,700 



1,525 



5,250 



4,750 



Feb. 



83 



640 



88 



918 



1,000 



2,160 



350 



310 



2,750 



3,000 



Mar. 



1,150 



250 



230 



72 



50 



190 



50 



247 



62 



700 



Apr. 



3,920 



810 



1,335 



385 



4,190 



5,295 



530 



225 



1,600 



3,167 



Apr. 











7,000 



9,400 



3,930 



1,830 



8,500 



5,000 



May 



1,290 



1,940 



730 



578 



2,683 



2,216 



470 



292 



7,167 



7,000 



June 



570 



950 



290 



476 



1,950 



1,050 



140 



70 



3,500 



4,000 



July 



7,100 



1,380 



4,088 



1,038 



5,216 



2,900 



320 



80 



14,000 



3,986 



Aug. 



50 



43 



50 



50 



180 



90 



70 



50 



100 



100 



Sept. 



7,900 



1,070 



975 



912 



260 



110 



130 



100 



50 



100 



Oct. 



750 



400 



455 



215 



700 



440 



240 



60 



600 



317 



1. Soil salinity (/imho/cm, using a 1:2 solution of dry sand-distilled water). 



83 



