  H10835/98-99--OPR-K171-KR;  LOCATED AN OBSTRUCTION BY SIDE SCAN SONAR AND MULTIBEAM ECHOSOUNDER IN LAT. 29/21/49.02N, LONG. 094/32/04.64W (NAD83) WITH A LEAST DEPTH OF 35 FEET MLLW.  (ENTERED 9/01 BY MBH)