By 1880, the island had four cottages, all located upriver, on the northern portion of the island.
It was located on the north side of the river, approximately half a mile upriver from the post's habitant coast.
Construction of new sections extended upriver (southward) until 1880.
Using steam power, riverboats were developed during that time which could navigate in shallow waters as well as upriver against strong currents.
In the end, they only arrived shortly before the ships were able to navigate up-river.
Rafts could transport juveniles and therefore return individuals to the populations of the several fish species that migrate upriver to breed.
Upriver lacks the post-vocalic glottal stops of the other two dialects, and vowel length usually appears in that environment for speakers of that dialect.
Cotton was grown upriver, made into nets and traded with fishing villages along the coast for large supplies of fish.
