Coastal estuary restoration · since 2009

Give the coast back its water.

Tidewater restores the living edge where rivers meet the sea — rebuilding tidal marshes, reseeding oyster beds, and reopening blocked channels so the water runs clean again. We work in the mud, with the people who live beside it. Your gift is what puts a crew on the water.

Donate Volunteer
94¢ of every dollar goes directly to restoration in the field
0M litres of tidal flow restored to choked estuaries
0 estuaries actively under restoration across three coastlines
0 donors and members keeping our crews on the water
What we do

Restoration that
starts in the mud.

We don't lobby from a distance. Tidewater runs field crews, monitoring teams, and community plantings on the estuaries that need them most — and we publish what we measure.

01

Reopen the tides

We replace failed culverts and dams with channels the tide can move through again — the single fastest way to revive a dying marsh. Flow returns within a season.

02

Reseed living reefs

Oyster beds filter the water and break the surge. We grow spat with local volunteers and return millions of young oysters to the beds they were stripped from.

03

Replant the marsh edge

Native cordgrass and eelgrass hold the shoreline and pull carbon into the sediment. Each spring our crews and neighbours plant the banks back, root by root.

Where your donation goes

Counted to the
cent.

We publish a full audited breakdown every year. The overwhelming majority of every gift reaches the water — not overhead, not glossy mail. Here is exactly how the last fiscal year was spent.

  • Independently auditedReviewed annually by Hale & Cardew LLP; full financials posted publicly.
  • Field-first by charterOur bylaws cap administration — restoration always comes first.

When the tide came back through Pell Marsh, the fish came back inside a year. My grandfather fished that water. My daughter will too.

Della Marsh-Owens Watershed steward, Pell River · partner since 2018
Become a Tidekeeper

A small monthly gift
keeps a crew on the water.

Recurring gifts are what let us commit to a marsh for the years restoration actually takes. Choose an amount — give once, or every month.

$35 / month seeds roughly 3,500 oysters a year.

Donate $35 / month Prefer to give your hands? Volunteer instead

Or come stand in the mud with us.

We run open planting days, oyster-bag builds, and shoreline counts up and down the coast. No experience needed — just boots you don't mind ruining.

Find a volunteer day