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NauticalNickVisibility Report

Fort Ross Reef

Fort Ross · Sonoma County · California

Diver reports today · zones from today’s forecast

Visibility Breakdown

Updated through the day · times PT

Visibility by position

Post Break
headline zone
7ft
today’s forecast
Open Water
9ft
today’s forecast

Solid = diver report · outlined = today's forecast

Cross-section from the sand out to open water, split into 2 visibility zones: Post Break (0-200 ft from shore), Open Water (200+ ft from shore).
Shore
Post Break
0-200 ft from shore
Open Water
200+ ft from shore

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.

No measured readings today

Did you dive today?Please share the visibility to make our algorithm more accurate.

Report visibility
Entry type
Shore
Parking
Good · lot
Spearfishing
Legal
Difficulty
Intermediate
Popular activities
Freediving · Scuba · Fishing

Today's forecast

Updated 4:38 PM PT today · October 13, 2026
Predicted visibility
5–9
ft
Fair
Low confidence
0510152030+ ft
Time of day
Today's forecast updates
8 ft
6 AM
Morning run
8 ft
10 AM
Wind refresh
7 ft
1 PM
Wind refresh

Dawn is the clearest window — onshore wind picks up by late morning and surface chop stirs the bottom through the afternoon.

What influences the visibility?
Contributing factors
Moderate phytoplankton
1.04 mg/m³
Major impact · Bad for vis
Regional calibration correction
+5ft
Moderate impact · Good for vis
Moderate swell
3.2 ft
Minor swell · Bad for vis
Light wind
7 kt
Minor wind · Neutral for vis
Ocean Oracle

7-Day Forecast

Today is the live headline above. Tomorrow onward is the algorithm's forecast from predicted swell, wind, and rain, updated each morning and at 6 PM Pacific.
Forecasts beyond today are Pro-only
Today · Tue
Oct 13
5–9 ft
Fair
Dawn is the clearest window — onshore wind picks up by late morning and surface chop stirs the bottom through the afternoon.
Swell 3 ft at 12 s, wind 2 kt at 10 AM. No rain forecast.
Wed
Oct 14
14
Good
Ocean Oracle Pro
Thu
Oct 15
9
Fair
Ocean Oracle Pro
Fri
Oct 16
16
Excellent
Ocean Oracle Pro
Sat
Oct 17
19
Excellent
Ocean Oracle Pro
Sun
Oct 18
11
Good
Ocean Oracle Pro
Mon
Oct 19
13
Good
Ocean Oracle Pro
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Map · getting there

38.508° N · 123.228° W
Map of Fort Ross Reef
Static map
Address
Sonoma County, CA
38.5084° N, 123.2282° W
Parking
Paved day-use lot inside Reef Campground with restrooms; $10 per vehicle April 1 to November 30. Gate is closed and access is walk-in only off-season. Enforcement is active.
Field notes

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 biome illustration
Biome illustration
Biome

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 biome illustration
Sub-biome illustration
Sub-biome

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 Glossary
For spearos · for fishing

Target Fish Species

Species report in production

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 →
From the Nautilids who hunt it

Spot strategies

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How other Nautilids actually hunt Fort Ross Reef: the biome they worked, the gear, the tide and time of day, and what they were after. Post your own and earn XP.
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