USACE Surveys performed a survey of the Delaware River, Philadelphia Harbor Range on 16 Sep and identified a potential navigation obstruction. After collecting a high density survey, the obstruction appears to be a boulder of approximate dimensions 4.5’ x 2.5’ x 1’, with a minimum depth of 39.1’ MLLW. The authorized channel depth is 40’ MLLW. Please see the attached chartlet for reference. The position of the object is:
Latitude: 39 57.764199 N
Longitude: 075 7.807885 W
Depth: 39.1’ MLLW
View Attachment 1 (.JPEG)
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