Table 17. Sediment discharge measurements, Upper Paraguay river at Porto Esperança.1 Date Liquid Sediment Sediment discharge discharge concentration (m3/s) (tons/day) (mg/liter) 03APR77 3520 160 020 526 28MAY77 4152 172 469 481 04JUN77 4223 103 238 283 18AUG77 2730 77 263 327 16SEPT77 2383 72 821 353 07OCT77 1979 63 809 373 17NOV77 1642 127 336 897 06DEC77 1426 59 946 486 13JAN78 1816 94 025 599 02FEB78 3207 102 809 371 27MAR78 2802 93 364 385 05MAY78 3382 66 867 229 12MAY78 3853 125 559 377 23JUN78 3142 68 467 252 09JUL78 2776 63 622 265 09OCT78 1578 22 406 164 22DEC78 1505 7 709 59 23JAN79 2388 11 248 54 20FEB79 2950 11 063 43 17MAR79 5881 30 768 60 11APR79 5312 17 046 37 09MAY79 4469 18 888 49 19JUN79 3718 12 359 38 20JUL79 3146 19 445 72 30AUG79 2568 8 552 39 26SEPT79 2174 20 033 107 25OCT79 1833 16 889 107 15NOV79 1561 8 287 61 28DEC79 1701 8 540 58 11JAN80 1770 8 000 52 23FEB80 2160 12 060 65 31MAR80 3813 34 480 105 03APR80 5623 46 804 96 16MAY80 5078 20 379 46 26JUN80 3754 17 357 53 10JUL80 3536 9 116 30 06AUG80 2866 9 780 39 06SEPT80 2250 10 086 52 04OCT80 2062 10 381 58 18NOV80 1853 13 050 81 16DEC80 1378 11 073 93 23JAN81 2416 77 990 373 01FEB81 2827 11 190 46 26MAR81 3315 26 705 93 01APR81 3573 17 005 55 22MAY81 4220 18 491 51 11JUL81 3803 5 998 18 24JUL81 3332 3 483 12 17SEPT81 2327 36 030 179 30SEPT81 2060 31 968 179 16NOV81 1565 14 226 105 27NOV81 1460 13 523 107 1 Source: DNOS, DNAEE, and Hidrologia S. A. (unpublished data).