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SurfperchRetention openBay · California
Dowest Slough
38.02°N · 121.84°W · Bay · 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 · 11 PM · Surfperch
- Now
- 6911 AM PDT
- Best window
- 11 PM-12 AMFlood tide
- Tide now
- Flooding1.5 ft ▲
Data from: NOAA CO-OPS + NDBC + ECMWF · Waterlands engine
Notify me when Dowest Slough 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 · 11 AM · now
Tide & current
NOAA CO-OPS
93Tide: FloodingCurrent: 0.6 kn floodWind & pressure
ECMWF
97Wind: 3 kt NNWPressure: SteadyWater temp & sky
NDBC
58Water temp: 67°F, warmLight: Bright sunSolunar: Major periodSeason & habitat · Surfperch
Species seasonality
83Season: PeakHabitat: Usable structureDepth: In 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
Dowest Slough
- Depth
- 10-45 ftNearest water
- Structure
- Bay · Inner · ProtectedBay · slope
- 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 Dowest Slough
Dowest Slough is a bay in San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge, California. Depth in the nearest water is 10-45 ft, with a slope. Its profile reads bay, inner water and protected.
Waterlands scores 11 species here; the best right now are leopard shark, surfperch and California halibut. It is peak season now for surfperch, striped bass, cabezon and rockfish, and shoulder season for leopard shark, California halibut, white seabass and kelp greenling. Leopard shark peak from May through August. Surfperch peak in May and from July through September. California halibut peak from May through August.
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.
- Leopard shark
- Leopard sharks cruise shallow mudflats, sloughs and channel edges in bays, most often in less than 15 feet of water, and follow the flooding tide onto the flats to feed on crabs, worms, clams and small fish. Anchor or fish from shore or a pier with a sliding sinker rig and a chunk of squid, mackerel or ghost shrimp on the bottom. The bite is often better into the evening and at night.
- California halibut
- California halibut are ambush feeders that lie on sand or mud bottom, mostly in water shallower than 100 feet and often inside bays, harbors and estuaries. Drift or slow-troll a live anchovy or sardine on a sliding sinker rig, or bounce a swimbait along the bottom over flats, channel edges and sandy areas near structure. Keep the bait within a foot or two of the bottom and give a fish time to turn the bait before setting the hook.
Nearby spots
Other spots within an easy run
- Antioch Point70
Cape · 1.0 mi
Top: RockfishPeak season- Rockfish 70
- Striped bass 69
- Cabezon 66
3 kt NNWH 2:14 PM · 3.4 ftL 7:54 PM · 1.1 ft
- New York Slough69
Channel · 1.0 mi
Top: Striped bassPeak season- Striped bass 69
- California halibut 66
- Leopard shark 66
3 kt NNWH 2:11 PM · 3.4 ftL 7:51 PM · 1.1 ft
- Point Beenar66
Cape · 0.5 mi
Top: RockfishPeak season- Rockfish 66
- Striped bass 66
- Cabezon 63
3 kt NNWH 2:14 PM · 3.4 ftL 7:54 PM · 1.1 ft
- Middle Slough64
Channel · 1.1 mi
Top: Striped bassPeak season- Striped bass 64
- California halibut 63
- Leopard shark 61
3 kt NNWH 2:11 PM · 3.4 ftL 7:51 PM · 1.1 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.
