Fort Ross Reef
Fort Ross · Sonoma County · California
Visibility Breakdown
Visibility by position
Solid = diver report · outlined = today's forecast

Post Break: The range past where any waves are forming, where the water starts to have a significant increase in visibility. There might be some sediment here, but swell energy is diffused and the water is calmer.
Open Water: This zone is far out enough from the shore that the water is at its clearest. It’s deep enough that sediment is not disturbed by the wave energy at the surface. Haze can sit near the surface, so the water is usually clearer the deeper you go.
Through the day
Today's visibility readings at this spot, shown at the hour each one was taken.
Every bar is a reading for the Post Break zone.
This chart shows measured diver reports only.
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Report visibilityToday's forecast
Updated 4:38 PM PT today · October 13, 2026Dawn is the clearest window — onshore wind picks up by late morning and surface chop stirs the bottom through the afternoon.
7-Day Forecast
Map · getting there
38.508° N · 123.228° W
About Fort Ross Reef
Fort Ross Reef is a small protected cove roughly a mile south of the main Fort Ross visitor area, reached by a short trail from the Reef Campground day-use lot. At the water's edge, the entry is gradual, sand and cobble underfoot, sheltered by rock on both flanks. Inside the cove, the bottom runs 5 to 20 feet, and a north-side reef holds shallow structure at 15 to 20 feet before dropping onto a gradual outer slope to about 40 feet.
Cobble and boulder line the cove floor and the north-side reef. Much of that structure now sits bare after the sea urchin barrens that spread across this coast, and that unkelped rock is a rocky reef biome. Seasonal bull kelp still returns to the outer edge of the reef through the warmer months, an annual single-stipe growth that dies back each winter, and that kelp is the kelp forest biome. The canopy is thinner than before the 2014 to 2019 collapse.
The site earned its beginner-abalone reputation in the decades before the closure, because the north-side reef held legal shallow abalone right at 15 to 20 feet. Recreational take of abalone has been closed statewide since 2018 and remains closed through at least 2036. Freediving and scuba are the working uses today, along with shore fishing from the rocks. The interior is workable in most conditions; the outer slope closes out on northwest swell.
Reef Campground has a paved day-use lot with restrooms, and the day-use fee is $10 per vehicle through the operating season, April 1 to November 30. The gate is closed off-season, and access is walk-in only. Enforcement is active.
Fishing and spearfishing are legal here under standard California regulations. The site sits between the Russian River SMCA to the south and the Salt Point SMCA to the north and inside neither.

Rocky Reef
The rocky reef biome is bare rock, boulder, and cobble structure without a kelp canopy above it. The hard relief and its crevices shelter invertebrates and reef fish, and the structure concentrates life that the surrounding sand cannot hold. Learn more about this biome and the species found in it by clicking the link below.
Learn more in the Biome Glossary
Kelp Forest
The kelp forest biome is giant kelp anchored to rocky bottom and growing up through the water column. The canopy and stipes form a three-dimensional habitat that shelters fish, invertebrates, and the predators that hunt them. Learn more about this biome and the species found in it by clicking the link below.
Learn more in the Biome GlossaryTarget Fish Species
The fish found at Fort Ross Reef are being researched for the Ichthyopedia. This section fills in as species are mapped to this beach.
Browse the Ichthyopedia →Spot strategies
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