Mad River Slough, Arcata Bay tide chart
California · near Manila (1 mi) · NOAA station 9418865 · times in local time (PDT)
Make a pocket card
What's it for?
How many days?
Fits on one page. Fold it in half for your pocket.
Tides today, Sunday, October 11
- High 1:34 AM 6.8 ft
- Low 6:57 AM 1.9 ft
- High 1:15 PM 8.2 ft
- Low 7:44 PM -0.4 ft
Were today's predicted times right where you were?
Sunrise 7:24 AM · Sunset 6:44 PM · New moon (0%)
Plan a trip
Pick what you want to do and we'll find the best days and times coming up.
Fishing forecast
Hour by hour at Mad River Slough, Arcata BayBest times
6:00 PM–7:00 PM and 2:00 PM–3:00 PM
New moon (0% lit)
Rain radar
Biting around here in October
- Striped bass In seasonSF Bay and Delta on moving water
- Calico bass In seasonKelp and rocks in Southern California
- Yellowtail In seasonSouthern California, warm water
General seasonal guide for California. Seasons, sizes and limits vary, so check your state rules before keeping fish.
Free tide emails for Mad River Slough, Arcata Bay
Pick what's useful. No spam, no sharing your address, unsubscribe in one click.
Weather and conditions at Mad River Slough, Arcata Bay
Loading the National Weather Service forecast… Open it on weather.gov.
Marine forecast: Humboldt Bay
Loading the latest National Weather Service forecast… Open it on weather.gov.
- Water temperature —
- Nearest weather buoy Humboldt Bay, North Spit, CA (168) (11 mi): waves, wind and water temperature
Marine radio: weather channels and VHF
NOAA Weather Radio
- 162.450 MHz WX5 WZ2550, Willow Creek, CA (22 mi)
To get alerts on a weather alert radio, program county code 006023 (Humboldt).
VHF marine channels
- Ch 16 Distress, safety and calling
- Ch 9 Boater-to-boater calling
- Ch 22A Coast Guard safety broadcasts
- Ch 13 Bridge-to-bridge (big ships, drawbridges)
- Ch 68, 69, 71, 72, 78A Recreational chat
Weather radio broadcasts are continuous; VHF channels are the US standard. Local harbors and bridges may use others, so check your chart.
Live readings from NOAA and the National Weather Service, loaded when you open this page.
How was it out there?
Been to Mad River Slough, Arcata Bay recently? Tap what you saw to help the next person. No account needed.
Recent reports
- No reports in the last 30 days yet. Be the first.
Reports are from visitors and may be wrong. Inappropriate ones are removed.
Tide times this week
| Day | High and low tides | Sunrise / sunset | Moon |
|---|---|---|---|
| Sun Oct 11 | H 1:34 AM 6.8 ftL 6:57 AM 1.9 ftH 1:15 PM 8.2 ftL 7:44 PM -0.4 ft | 7:24 AM / 6:44 PM | New moon (0%) |
| Mon Oct 12 | H 2:21 AM 6.6 ftL 7:31 AM 2.4 ftH 1:44 PM 8.2 ftL 8:24 PM -0.4 ft | 7:25 AM / 6:42 PM | New moon (2%) |
| Tue Oct 13 | H 3:08 AM 6.3 ftL 8:05 AM 3.0 ftH 2:14 PM 8.0 ftL 9:04 PM -0.3 ft | 7:26 AM / 6:40 PM | Waxing crescent (6%) |
| Wed Oct 14 | H 3:56 AM 6.0 ftL 8:40 AM 3.5 ftH 2:45 PM 7.7 ftL 9:46 PM 0.0 ft | 7:27 AM / 6:39 PM | Waxing crescent (13%) |
| Thu Oct 15 | H 4:48 AM 5.7 ftL 9:16 AM 3.9 ftH 3:20 PM 7.3 ftL 10:33 PM 0.3 ft | 7:28 AM / 6:37 PM | Waxing crescent (20%) |
| Fri Oct 16 | H 5:47 AM 5.5 ftL 9:59 AM 4.2 ftH 4:02 PM 6.9 ftL 11:26 PM 0.6 ft | 7:29 AM / 6:36 PM | Waxing crescent (30%) |
| Sat Oct 17 | H 6:55 AM 5.3 ftL 10:59 AM 4.4 ftH 4:57 PM 6.5 ft | 7:31 AM / 6:34 PM | First quarter (40%) |
Tidal currents near Mad River Slough, Arcata Bay
From NOAA's current predictions for North Bay Channel at Samoa Channel at 15 ft depth, 5.2 miles away. Slack is when the current turns and the water is calmest; flood runs in with the rising tide and ebb runs out with the falling tide. Times are the peak of each run, in knots. The flood runs toward the NNE (15°) and the ebb toward the SSW (196°). The strongest current this week is 2.2 knots.
| Day | Slack water and peak currents |
|---|---|
| Sun Oct 11 | Slack 1:12 AMEbb 3:40 AM 1.4 knSlack 6:24 AMFlood 10:40 AM 1.8 knSlack 1:08 PMEbb 4:00 PM 2.2 knSlack 7:34 PMFlood 11:31 PM 1.5 kn |
| Mon Oct 12 | Slack 1:59 AMEbb 4:19 AM 1.2 knSlack 6:57 AMFlood 11:07 AM 1.6 knSlack 1:41 PMEbb 4:27 PM 2.1 knSlack 8:09 PM |
| Tue Oct 13 | Flood 12:15 AM 1.4 knSlack 2:45 AMEbb 4:56 AM 0.9 knSlack 7:33 AMFlood 11:32 AM 1.5 knSlack 2:14 PMEbb 4:55 PM 2.0 knSlack 8:41 PM |
| Wed Oct 14 | Flood 12:58 AM 1.2 knSlack 3:34 AMEbb 5:37 AM 0.7 knSlack 8:14 AMFlood 12:02 PM 1.3 knSlack 2:48 PMEbb 5:26 PM 1.8 knSlack 9:14 PM |
| Thu Oct 15 | Flood 1:43 AM 1.0 knSlack 4:28 AMEbb 6:27 AM 0.5 knSlack 9:01 AMFlood 12:42 PM 1.2 knSlack 3:26 PMEbb 6:03 PM 1.6 knSlack 9:52 PM |
| Fri Oct 16 | Flood 2:34 AM 0.9 knSlack 5:36 AMEbb 7:57 AM 0.3 knSlack 9:58 AMFlood 1:31 PM 1.0 knSlack 4:11 PMEbb 6:47 PM 1.4 knSlack 10:39 PM |
| Sat Oct 17 | Flood 3:37 AM 0.8 knSlack 7:04 AMEbb 9:31 AM 0.2 knSlack 11:07 AMFlood 2:26 PM 0.9 knSlack 5:03 PMEbb 7:38 PM 1.3 knSlack 11:38 PM |
Current predictions can differ a lot over short distances: check the station location on NOAA before planning a passage.
Best fishing times at Mad River Slough, Arcata Bay
The bite score (0 to 100) adds up what anglers watch most: moving water (a tide running harder than usual here scores higher), solunar periods (major periods of about two hours centred on the moon overhead or underfoot, minor periods of about an hour on moonrise and moonset), dawn and dusk light, and how close it is to the new or full moon. Best times are the stretches of the day scoring near that day's top.
| Day | Bite score | Best times | Major periods | Minor periods |
|---|---|---|---|---|
| Sun Oct 11 | 80 · Excellent | 6:00 PM–7:00 PM, 2:00 PM–3:00 PM | 12:35 AM–2:35 AM, 12:57 PM–2:57 PM | 8:16 AM–9:16 AM, 6:30 PM–7:30 PM |
| Mon Oct 12 | 70 · Good | 2:00 PM–4:00 PM, 6:00 PM–8:00 PM | 1:20 AM–3:20 AM, 1:44 PM–3:44 PM | 9:22 AM–10:22 AM, 6:59 PM–7:59 PM |
| Tue Oct 13 | 62 · Good | 3:00 PM–5:00 PM, 6:00 PM–7:00 PM | 2:08 AM–4:08 AM, 2:32 PM–4:32 PM | 10:27 AM–11:27 AM, 7:33 PM–8:33 PM |
| Wed Oct 14 | 56 · Good | 4:00 PM–6:00 PM | 2:57 AM–4:57 AM, 3:22 PM–5:22 PM | 11:28 AM–12:28 PM, 8:14 PM–9:14 PM |
| Thu Oct 15 | 45 · Fair | 5:00 PM–6:00 PM | 3:48 AM–5:48 AM, 4:13 PM–6:13 PM | 12:24 PM–1:24 PM, 9:02 PM–10:02 PM |
| Fri Oct 16 | 46 · Fair | 6:00 PM–7:00 PM | 4:39 AM–6:39 AM, 5:04 PM–7:04 PM | 1:13 PM–2:13 PM, 9:57 PM–10:57 PM |
| Sat Oct 17 | 48 · Fair | 6:00 PM–8:00 PM | 5:29 AM–7:29 AM, 5:53 PM–7:53 PM | 1:54 PM–2:54 PM, 10:58 PM–11:58 PM |
A planning aid, not a guarantee. Wind, water clarity, bait and pressure changes matter too; the forecast above adds live wind and pressure when you open the page.
Best daylight low tides in the next two weeks
The lowest water that falls between sunrise and sunset, for tide pooling and beachcombing.
- 0.2 ft at 6:00 PM on Saturday, October 24
- 1.0 ft at 5:19 PM on Friday, October 23
- 1.9 ft at 4:38 PM on Thursday, October 22
- 2.4 ft at 7:31 AM on Monday, October 12
- 2.8 ft at 3:53 PM on Wednesday, October 21
- 3.0 ft at 8:05 AM on Tuesday, October 13
Tide table: October 11 to November 10, 2026
Full 2026 tide table Full 2027 tide table
| Day | High and low tides | Sunrise / sunset |
|---|---|---|
| Sun Oct 11 | H 1:34 AM 6.8 ftL 6:57 AM 1.9 ftH 1:15 PM 8.2 ftL 7:44 PM -0.4 ft | 7:24 AM / 6:44 PM |
| Mon Oct 12 | H 2:21 AM 6.6 ftL 7:31 AM 2.4 ftH 1:44 PM 8.2 ftL 8:24 PM -0.4 ft | 7:25 AM / 6:42 PM |
| Tue Oct 13 | H 3:08 AM 6.3 ftL 8:05 AM 3.0 ftH 2:14 PM 8.0 ftL 9:04 PM -0.3 ft | 7:26 AM / 6:40 PM |
| Wed Oct 14 | H 3:56 AM 6.0 ftL 8:40 AM 3.5 ftH 2:45 PM 7.7 ftL 9:46 PM 0.0 ft | 7:27 AM / 6:39 PM |
| Thu Oct 15 | H 4:48 AM 5.7 ftL 9:16 AM 3.9 ftH 3:20 PM 7.3 ftL 10:33 PM 0.3 ft | 7:28 AM / 6:37 PM |
| Fri Oct 16 | H 5:47 AM 5.5 ftL 9:59 AM 4.2 ftH 4:02 PM 6.9 ftL 11:26 PM 0.6 ft | 7:29 AM / 6:36 PM |
| Sat Oct 17 | H 6:55 AM 5.3 ftL 10:59 AM 4.4 ftH 4:57 PM 6.5 ft | 7:31 AM / 6:34 PM |
| Sun Oct 18 | L 12:25 AM 0.9 ftH 8:04 AM 5.4 ftL 12:24 PM 4.4 ftH 6:08 PM 6.2 ft | 7:32 AM / 6:33 PM |
| Mon Oct 19 | L 1:28 AM 1.0 ftH 9:00 AM 5.6 ftL 1:51 PM 4.1 ftH 7:26 PM 6.0 ft | 7:33 AM / 6:31 PM |
| Tue Oct 20 | L 2:25 AM 1.0 ftH 9:40 AM 5.9 ftL 3:00 PM 3.5 ftH 8:38 PM 6.0 ft | 7:34 AM / 6:30 PM |
| Wed Oct 21 | L 3:13 AM 1.0 ftH 10:12 AM 6.3 ftL 3:53 PM 2.8 ftH 9:42 PM 6.1 ft | 7:35 AM / 6:28 PM |
| Thu Oct 22 | L 3:56 AM 1.1 ftH 10:41 AM 6.8 ftL 4:38 PM 1.9 ftH 10:40 PM 6.3 ft | 7:36 AM / 6:27 PM |
| Fri Oct 23 | L 4:34 AM 1.3 ftH 11:09 AM 7.4 ftL 5:19 PM 1.0 ftH 11:34 PM 6.5 ft | 7:37 AM / 6:26 PM |
| Sat Oct 24 | L 5:11 AM 1.5 ftH 11:38 AM 7.9 ftL 6:00 PM 0.2 ft | 7:38 AM / 6:24 PM |
| Sun Oct 25 | H 12:25 AM 6.6 ftL 5:48 AM 1.9 ftH 12:09 PM 8.4 ftL 6:42 PM -0.6 ft | 7:40 AM / 6:23 PM |
| Mon Oct 26 | H 1:17 AM 6.7 ftL 6:25 AM 2.3 ftH 12:41 PM 8.8 ftL 7:24 PM -1.2 ft | 7:41 AM / 6:21 PM |
| Tue Oct 27 | H 2:09 AM 6.6 ftL 7:04 AM 2.7 ftH 1:17 PM 9.0 ftL 8:10 PM -1.5 ft | 7:42 AM / 6:20 PM |
| Wed Oct 28 | H 3:02 AM 6.5 ftL 7:45 AM 3.1 ftH 1:56 PM 9.0 ftL 8:58 PM -1.5 ft | 7:43 AM / 6:19 PM |
| Thu Oct 29 | H 4:00 AM 6.3 ftL 8:31 AM 3.5 ftH 2:42 PM 8.8 ftL 9:51 PM -1.4 ft | 7:44 AM / 6:18 PM |
| Fri Oct 30 | H 5:01 AM 6.1 ftL 9:25 AM 3.8 ftH 3:34 PM 8.4 ftL 10:48 PM -1.0 ft | 7:45 AM / 6:16 PM |
| Sat Oct 31 | H 6:07 AM 6.0 ftL 10:32 AM 3.9 ftH 4:37 PM 7.8 ftL 11:50 PM -0.6 ft | 7:47 AM / 6:15 PM |
| Sun Nov 1 | H 6:14 AM 6.1 ftL 10:54 AM 3.9 ftH 4:52 PM 7.2 ftL 11:54 PM -0.1 ft | 6:48 AM / 5:14 PM |
| Mon Nov 2 | H 7:15 AM 6.4 ftL 12:24 PM 3.5 ftH 6:14 PM 6.7 ft | 6:49 AM / 5:13 PM |
| Tue Nov 3 | L 12:55 AM 0.3 ftH 8:06 AM 6.8 ftL 1:44 PM 2.7 ftH 7:35 PM 6.3 ft | 6:50 AM / 5:11 PM |
| Wed Nov 4 | L 1:52 AM 0.7 ftH 8:49 AM 7.3 ftL 2:49 PM 1.8 ftH 8:50 PM 6.2 ft | 6:51 AM / 5:10 PM |
| Thu Nov 5 | L 2:42 AM 1.1 ftH 9:27 AM 7.7 ftL 3:42 PM 1.0 ftH 9:57 PM 6.2 ft | 6:53 AM / 5:09 PM |
| Fri Nov 6 | L 3:27 AM 1.6 ftH 10:02 AM 8.1 ftL 4:29 PM 0.2 ftH 10:56 PM 6.2 ft | 6:54 AM / 5:08 PM |
| Sat Nov 7 | L 4:08 AM 2.1 ftH 10:34 AM 8.3 ftL 5:10 PM -0.3 ftH 11:49 PM 6.2 ft | 6:55 AM / 5:07 PM |
| Sun Nov 8 | L 4:47 AM 2.6 ftH 11:04 AM 8.4 ftL 5:49 PM -0.7 ft | 6:56 AM / 5:06 PM |
| Mon Nov 9 | H 12:37 AM 6.3 ftL 5:24 AM 3.1 ftH 11:35 AM 8.4 ftL 6:26 PM -0.8 ft | 6:57 AM / 5:05 PM |
| Tue Nov 10 | H 1:22 AM 6.2 ftL 6:01 AM 3.5 ftH 12:05 PM 8.3 ftL 7:03 PM -0.8 ft | 6:59 AM / 5:04 PM |
Heights are in feet above mean lower low water (MLLW), the zero line on most US nautical charts. A minus height means the water drops below that line.
Around Mad River Slough, Arcata Bay
Beaches
- Somoa Beach 3.7 mi
Marinas
- Woodley Island Marina 4.0 mi
- Eureka Public Marina 4.5 mi
Fishing piers and docks
- Bonnie Gool Dock 4.1 mi
- Adorni Fishing Pier 4.1 mi
- F Street Dock 4.2 mi
- Schneider Dock 5.1 mi
Distances from the tide station. Places from © OpenStreetMap contributors; links open in Google Maps.
Fish in the waters around Mad River Slough, Arcata Bay
39 kinds of fish, sharks and rays have been recorded within 15 km (about 9 miles) of this spot, most often Green Sturgeon, Prickly Sculpin, Three-spined Stickleback. The bar shows how many records each has.
- Green Sturgeon Acipenser medirostrisSalt water · 3048 records
- Prickly Sculpin Cottus asperSalt water · 15 records
- Three-spined Stickleback Gasterosteus aculeatusSalt water · 14 records
- Night Smelt Spirinchus starksiSalt water · 10 records
- Pacific Staghorn Sculpin Leptocottus armatusSalt water · 9 records
- Shiner Perch Cymatogaster aggregataSalt water · 8 records
- Rainbow Trout Oncorhynchus mykissSalt water · 7 records
- Saddleback Gunnel Pholis ornataSalt water · 7 records
- Surf Smelt Hypomesus pretiosusSalt water · 6 records
- Cutthroat Trout Oncorhynchus clarkiiSalt water · 6 records
- Coastrange Sculpin Cottus aleuticusSalt water · 5 records
- Starry Flounder Platichthys stellatusSalt water · 5 records
- Whitebait Smelt Allosmerus elongatusSalt water · 5 records
- Sharpnose Sculpin Clinocottus acuticepsSalt water · 4 records
- Tidewater Goby Eucyclogobius newberryiSalt water · 4 records
- English Sole Parophrys vetulusSalt water · 4 records
- Topsmelt Atherinops affinisSalt water · 4 records
- Northern Anchovy Engraulis mordaxSalt water · 4 records
- Slender Codling Halargyreus johnsoniiSalt water · 4 records
- Cabezon Scorpaenichthys marmoratusSalt water · 4 records
- Kelp Pipefish Syngnathus californiensisSalt water · 3 records
- Brown Irish Lord Hemilepidotus spinosusSalt water · 3 records
- Western Mosquitofish Gambusia affinisBrackish water · 3 records
- Redtail Surfperch Amphistichus rhodoterusSalt water · 3 records
- Striped Seaperch Embiotoca lateralisSalt water · 3 records
- Walleye Surfperch Hyperprosopon argenteumSalt water · 3 records
- Speckled Sanddab Citharichthys stigmaeusSalt water · 3 records
- Brown Smoothhound Mustelus henleiSalt water · 3 records
- King Salmon Oncorhynchus tshawytschaSalt water · 3 records
- Bay Pipefish Syngnathus leptorhynchusSalt water · 2 records
- Shortspine Thornyhead Sebastolobus alascanusSalt water · 2 records
- Greenstriped Rockfish Sebastes elongatusSalt water · 2 records
- Darkblotched Rockfish Sebastes crameriSalt water · 2 records
- Yellowtail Rockfish Sebastes flavidusSalt water · 2 records
- Black Rockfish Sebastes melanopsSalt water · 2 records
- Stripetail Rockfish Sebastes saxicolaSalt water · 2 records
- Rock Greenling Hexagrammos lagocephalusSalt water · 2 records
- Kelp Greenling Hexagrammos decagrammusSalt water · 2 records
- Warty Poacher Chesnonia verrucosaSalt water · 2 records
Fresh water nearby · 1 species
Rivers, creeks and ponds within 15 km, not the tidal water itself.
- Sacramento Sucker Catostomus occidentalisFresh water · 13 records
Records from GBIF datasets released under CC0 or CC BY 4.0 (museum collections, surveys and community sightings). It shows what has been found here, not a complete list. Check your state rules before keeping fish.
About the tides at Mad River Slough, Arcata Bay
Mad River Slough, Arcata Bay gets two high tides and two low tides most days, but one high is clearly higher than the other (and one low clearly lower), which is called a mixed tide. Over the next month the water typically rises or falls about 5.5 ft between a high and the next low.
The biggest swings in this window come around Wednesday, October 28, when the day's range reaches 10.6 ft, and again around Monday, November 9 (9.2 ft). Here the biggest ranges depend on the moon's phase and on how far north or south of the equator it is, so they don't always line up with the new and full moon. The calmest day is Tuesday, October 20, with only 5.0 ft between the day's highest and lowest water.
The lowest tide of the month is -1.5 ft at 8:58 PM on Wednesday, October 28. There are 16 minus tides (lows below the chart's zero line) in this window: the best times for tide pools, clamming and walking the flats.
The highest predicted tide is 9.0 ft at 1:56 PM on Wednesday, October 28. Onshore wind or a storm can push the real water level above that.
This is a subordinate station: NOAA calculates its times and heights by adjusting a nearby reference station, so expect them to be a few minutes or a few tenths of a foot off on any given day.
Station details
- NOAA station ID: 9418865
- Type: subordinate (adjusted from a reference station)
- Location: 40.8650, -124.1480
Reference station: Humboldt Bay (North Spit).
Nearby tide stations
- Arcata Wharf 2 mi
- Samoa 3 mi
- Eureka Slough Bridge 4 mi
- Eureka 4 mi
- Bucksport 7 mi
- Humboldt Bay (North Spit) 8 mi