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SurfperchRetention openBar · California
Shag Rocks
37.83°N · 122.44°W · Bar · San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge
Species here · tap to switch
Best score today · 8 PM · Surfperch
- Now
- 6010 AM PDT
- Best window
- 6-10 PMFlood tide
- Tide now
- Flooding4.7 ft ▲
Data from: NOAA CO-OPS + NDBC + ECMWF + Open-Meteo Marine · Waterlands engine
Notify me when Shag Rocks scores 75+
Checked every morning against the 14-day forecast. Free by push and email.
14-day forecast
Best days to fish
24-hour conditions · rolling from now
Conditions · 10 AM · now
Tide & current
NOAA CO-OPS
98Tide: FloodingCurrent: 2.1 kn floodWind & pressure
ECMWF
87Wind: 2 kt WSWPressure: SteadyWater temp & sky
NDBC + Open-Meteo Marine
81Water temp: 64°F, primeLight: Partly cloudySolunar: Near a majorSeas: 2.6 ftSeason & habitat · Surfperch
Species seasonality
48Season: PeakHabitat: Poor fitDepth: Out of rangeRegulations: Retention open
Current regulations
What you can keep here today
San Francisco Groundfish Management Area
Surfperch
Retention open- Daily limit
- 20 per day
- Possession
- Not published
- Size
- Minimum 10.5 in, total length. Redtail surfperch only. No minimum size for other surfperch.
- Season
- No closed season on file
- Annual quota
- Not published
- Other
- In San Francisco Bay and San Pablo Bay, surfperch are closed April 1 through July 31 and the limit is 5 (shiner perch excepted). 20 surfperch in combination, not more than 10 of any one species. Shiner perch have a separate limit of 20.
From CDFW 2026 California Ocean Sport Fishing Regulations booklet (last updated July 17, 2026), read Sep 13
Other species here
- Albacore tuna Retention open (25 per day)
- Barred sand bass Retention open (4 per day (5 kelp bass, barred sand bass and spotted sand bass combined))
- Cabezon Retention open (10 per day (10 rockfish, cabezon and greenlings combined))
- California halibut Retention open (2 per day)
- Chinook salmon Retention open (2 per day (2 salmon combined))
- Coho salmon Closed (No retention)
- Kelp bass Retention open (5 per day (5 kelp bass, barred sand bass and spotted sand bass combined))
- Kelp greenling Retention open (10 per day (10 rockfish, cabezon and greenlings combined))
- Leopard shark Retention open (3 per day)
- Lingcod Retention open (2 per day)
- Mahi-mahi Retention open (10 per day)
- Pacific bluefin tuna Retention open (2 per day)
- Pacific halibut Retention open (1 per day)
- Rockfish Retention open (10 per day (10 rockfish, cabezon and greenlings combined))
- Sablefish Retention open (10 per day)
- Striped bass Retention open (2 per day)
- White seabass Retention open (3 per day)
- Yellowfin tuna Retention open (10 per day)
- Yellowtail Retention open (10 per day)
Source: CDFW · synced today
Seasonality · 52-week view · this week ringed
When Surfperch is best here
Peak season for Surfperch · 1 more week at peak
- Peak
- Shoulder
- Off
- This week
Spot profile
Shag Rocks
- Depth
- 60-90 ftDrop-off
- Structure
- Ledge · Inner · Semi-exposedLedge · drop-off
- Season
- Peak seasonSurfperch
NOAA NCEI DEM, sampled Sep 14 on a 3.4 m grid. Depths are feet below NAVD 88, not chart datum (MLLW), so they can differ from a chart by a few feet. Not for navigation.
About this spot
Fishing Shag Rocks
Shag Rocks is a bar in San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge, California. Depth is 60-90 ft, with a drop-off. Its profile reads ledge, inner water and semi-exposed.
Waterlands scores 11 species here; the best right now are white seabass, striped bass and rockfish. It is peak season now for striped bass, rockfish, surfperch and cabezon, and shoulder season for white seabass, lingcod, Chinook salmon and kelp greenling. Striped bass peak from June through July and from September through October. Rockfish peak from May through September.
Tackle & technique
- Surfperch
- Surfperch feed in the troughs and holes within about 30 feet of the waterline, just outside the first set of breakers. Cast a two-hook high-low or Carolina rig with size 4 to 2 hooks and a 1 to 6 ounce pyramid sinker and let the surge work it through the trough. Fish the incoming tide on beaches with a steep drop, and switch to jetties, pilings and bays when the surf is too big.
- White seabass
- White seabass hold along kelp bed edges and over nearby sand where market squid gather, usually in 20 to 80 feet of water and shallower as the water warms. Fish a live squid on a dropper loop or fly-line a sardine near the kelp at dawn, dusk and after dark, especially around the spring full moon. Tagged fish spend most of their time in 52 to 66 degree water.
- Striped bass
- Striped bass feed where moving tide pushes bait past structure: inlets, points, jetties, bridge pilings and rips in the surf, usually in 2 to 40 feet of water. Fish dawn, dusk and night hardest, casting plugs, bucktails and soft plastics or drifting live bunker and eels, and chunk bait on the bottom in current. In midsummer the larger fish drop deeper or feed mostly after dark.
Nearby spots
Other spots within an easy run
- Harding Rock64
Bar · 0.3 mi
Top: White seabassShoulder season- White seabass 64
- Rockfish 61
- Striped bass 61
2 kt WSWH 11:02 AM · 4.7 ftL 4:27 PM · 2.2 ft
- Arch Rock64
Bar · 0.4 mi
Top: White seabassShoulder season- White seabass 64
- Striped bass 62
- Rockfish 61
2 kt WSWH 11:03 AM · 4.9 ftL 4:24 PM · 2.2 ft
- Alcatraz Shoal63
Bar · 0.8 mi
Top: Striped bassPeak season- Striped bass 63
- Surfperch 61
- White seabass 57
2 kt WSWH 11:03 AM · 4.9 ftL 4:24 PM · 2.2 ft
- Point Knox Shoal57
Bar · 1.1 mi
Top: Striped bassPeak season- Striped bass 57
- Rockfish 56
- Surfperch 56
2 kt WSWH 11:02 AM · 4.7 ftL 4:27 PM · 2.2 ft
Scores and forecasts are for planning only and can be wrong. Conditions on the water change fast; check the marine forecast before you go. Regulations change during the season, so confirm limits and closures with CDFW before you keep a fish.