Lulu Island is situated between the two principal arms of the Fraser River estuary across and downstream from the City of New Westminster.

The islands of Annacis, Poplar, Don and Lion are to its east; to the south are Deas, Kirkland, Gunn, Barber, Reifel and Westham.

The Eburne swing bridge was removed in 2015, leaving remaining railroad tracks on the Richmond side of the river orphaned.

Because the island is composed partly of glacial silt brought down by the Fraser River, there is a fear of liquefaction of its sands if a tremor with sufficient intensity were to shake it.

Additionally, statically-triggered liquefaction failures have been documented in this area, highlighting the extremely loose localized soil conditions, as well as the high potential for associated slope instability and mass wasting.