I te timatanga o tenei tau, i whakawhiwhia e te Roopu Dutra he kirimana mai i te Ope Taua mo te keri-a-tau i te awa o Sacramento River Deep Water Channel (DWSC).
Kei roto i te kaupapa te keri-a-tau i te awa o Sacramento DWSC ki te -30-ft (MLLW) me te 1-ft o te utu nui-hohonu me te kawe i nga rawa keri ki nga waahi tuunga whenua.
I tukuna e te kamupene inanahi nga whakaahua e whakaatu ana i te clamshell dredge DB24 me te putunga scow KS10 e whakapau kaha ana ki tenei kaupapa.
Ko tenei kaupapa maha miriona taara, i timata i te marama o Akuhata 2022, ka oti i nga marama e whai ake nei.
Ko te Sacramento Deep Water Ship Channel he kaupapa iti-whakamahi, he kaupapa hoahoa hohonu kua whakamanahia ki te pupuri i te hongere 30-putu te hohonu mo te 43 maero o runga o te hongere kaipuke 80-maero te roa.Ka hono i te Tauranga o West Sacramento me te Moana-nui-a-Kiwa.Kei roto hoki i te kaupapa te 33 maero o te whakaterenga kaupapa rua me nga tahataha tiaki waipuke.
Ko te hongere kaipuke tetahi waahanga nui o te kaiao kaiao o California Bay Delta me te tautoko i te Tauranga o West Sacramento he hononga nui ki te umanga ahuwhenua o California.