Knappa, Knappa Slough tide chart
Oregon · near Astoria (12 mi) · NOAA station 9439069 · times in local time (PDT)
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Tides today, Sunday, October 11
- High 2:53 AM 7.5 ft
- Low 9:13 AM 0.9 ft
- High 2:43 PM 8.7 ft
- Low 9:55 PM -0.7 ft
Were today's predicted times right where you were?
Sunrise 7:26 AM · Sunset 6:37 PM · New moon (0%)
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Fishing forecast
Hour by hour at Knappa, Knappa SloughBest times
6:00 PM–7:00 PM and 1:00 AM–2:00 AM
New moon (0% lit)
Rain radar
Biting around here in October
- Coho salmon In seasonNearshore and bays on the incoming tide
- Rockfish In seasonJetties and reefs, slower tides
General seasonal guide for Pacific Northwest. Seasons, sizes and limits vary, so check your state rules before keeping fish.
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Weather and conditions at Knappa, Knappa Slough
Loading the National Weather Service forecast… Open it on weather.gov.
Marine forecast: Columbia River Bar
Loading the latest National Weather Service forecast… Open it on weather.gov.
- Water temperature —
- Nearest weather buoy Clatsop Spit, OR (162) (26 mi): waves, wind and water temperature
Marine radio: weather channels and VHF
NOAA Weather Radio
- 162.400 MHz WX2 KEC91, Astoria, WA (19 mi)
- 162.425 MHz WX4 WWF94, Neahkahnie, OR (35 mi)
To get alerts on a weather alert radio, program county code 041007 (Clatsop).
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.
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Tide times this week
| Day | High and low tides | Sunrise / sunset | Moon |
|---|---|---|---|
| Sun Oct 11 | H 2:53 AM 7.5 ftL 9:13 AM 0.9 ftH 2:43 PM 8.7 ftL 9:55 PM -0.7 ft | 7:26 AM / 6:37 PM | New moon (0%) |
| Mon Oct 12 | H 3:39 AM 7.3 ftL 9:47 AM 1.4 ftH 3:12 PM 8.6 ftL 10:33 PM -0.7 ft | 7:28 AM / 6:35 PM | New moon (2%) |
| Tue Oct 13 | H 4:23 AM 7.1 ftL 10:21 AM 1.9 ftH 3:40 PM 8.4 ftL 11:09 PM -0.5 ft | 7:29 AM / 6:33 PM | Waxing crescent (6%) |
| Wed Oct 14 | H 5:09 AM 6.8 ftL 10:54 AM 2.4 ftH 4:08 PM 8.2 ftL 11:46 PM -0.1 ft | 7:31 AM / 6:31 PM | Waxing crescent (13%) |
| Thu Oct 15 | H 5:57 AM 6.4 ftL 11:30 AM 2.8 ftH 4:40 PM 7.9 ft | 7:32 AM / 6:29 PM | Waxing crescent (20%) |
| Fri Oct 16 | L 12:26 AM 0.2 ftH 6:49 AM 6.1 ftL 12:12 PM 3.1 ftH 5:18 PM 7.5 ft | 7:33 AM / 6:28 PM | Waxing crescent (30%) |
| Sat Oct 17 | L 1:13 AM 0.6 ftH 7:49 AM 5.9 ftL 1:06 PM 3.4 ftH 6:07 PM 7.1 ft | 7:35 AM / 6:26 PM | First quarter (40%) |
Tidal currents near Knappa, Knappa Slough
From NOAA's current predictions for Woody Island Channel (off Seal Island) at 12 ft depth, 2.9 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 E (81°) and the ebb toward the WSW (247°). The strongest current this week is 1.5 knots.
| Day | Slack water and peak currents |
|---|---|
| Sun Oct 11 | Flood 1:35 AM 0.8 knSlack 3:48 AMEbb 8:20 AM 1.1 knSlack 10:55 AMFlood 1:17 PM 0.7 knSlack 3:37 PMEbb 8:37 PM 1.5 knSlack 11:42 PM |
| Mon Oct 12 | Flood 2:09 AM 0.7 knSlack 4:29 AMEbb 8:58 AM 1.0 knSlack 11:27 AMFlood 1:37 PM 0.6 knSlack 4:08 PMEbb 9:11 PM 1.5 kn |
| Tue Oct 13 | Slack 12:18 AMFlood 2:38 AM 0.7 knSlack 5:10 AMEbb 9:33 AM 0.9 knSlack 12:00 PMFlood 2:00 PM 0.6 knSlack 4:38 PMEbb 9:44 PM 1.4 kn |
| Wed Oct 14 | Slack 12:55 AMFlood 3:05 AM 0.6 knSlack 5:51 AMEbb 10:09 AM 0.8 knSlack 12:35 PMFlood 2:27 PM 0.5 knSlack 5:08 PMEbb 10:16 PM 1.3 kn |
| Thu Oct 15 | Slack 1:35 AMFlood 3:36 AM 0.5 knSlack 6:35 AMEbb 10:46 AM 0.6 knSlack 1:14 PMFlood 2:59 PM 0.4 knSlack 5:38 PMEbb 10:53 PM 1.2 kn |
| Fri Oct 16 | Slack 2:19 AMFlood 4:14 AM 0.5 knSlack 7:24 AMEbb 11:30 AM 0.5 knSlack 2:00 PMFlood 3:36 PM 0.4 knSlack 6:11 PMEbb 11:37 PM 1.1 kn |
| Sat Oct 17 | Slack 3:10 AMFlood 5:04 AM 0.4 knSlack 8:21 AMEbb 12:33 PM 0.4 knSlack 2:57 PMFlood 4:23 PM 0.3 knSlack 6:52 PM |
Current predictions can differ a lot over short distances: check the station location on NOAA before planning a passage.
Best fishing times at Knappa, Knappa Slough
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 | 94 · Excellent | 6:00 PM–7:00 PM, 1:00 AM–2:00 AM | 12:32 AM–2:32 AM, 12:55 PM–2:55 PM | 8:27 AM–9:27 AM, 6:14 PM–7:14 PM |
| Mon Oct 12 | 78 · Excellent | 6:00 PM–8:00 PM, 1:00 AM–3:00 AM | 1:18 AM–3:18 AM, 1:42 PM–3:42 PM | 9:37 AM–10:37 AM, 6:38 PM–7:38 PM |
| Tue Oct 13 | 63 · Good | 7:00 PM–8:00 PM, 2:00 AM–3:00 AM | 2:06 AM–4:06 AM, 2:30 PM–4:30 PM | 10:46 AM–11:46 AM, 7:08 PM–8:08 PM |
| Wed Oct 14 | 43 · Fair | 3:00 AM–4:00 AM | 2:55 AM–4:55 AM, 3:20 PM–5:20 PM | 11:51 AM–12:51 PM, 7:46 PM–8:46 PM |
| Thu Oct 15 | 37 · Fair | 4:00 AM–5:00 AM, 5:00 PM–6:00 PM | 3:45 AM–5:45 AM, 4:11 PM–6:11 PM | 12:48 PM–1:48 PM, 8:34 PM–9:34 PM |
| Fri Oct 16 | 38 · Fair | 6:00 PM–7:00 PM | 4:36 AM–6:36 AM, 5:01 PM–7:01 PM | 1:36 PM–2:36 PM, 9:30 PM–10:30 PM |
| Sat Oct 17 | 39 · Fair | 6:00 AM–7:00 AM, 6:00 PM–7:00 PM | 5:26 AM–7:26 AM, 5:51 PM–7:51 PM | 2:14 PM–3:14 PM, 10:33 PM–11:33 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.
- 0.9 ft at 9:13 AM on Sunday, October 11
- 1.4 ft at 9:47 AM on Monday, October 12
- 1.9 ft at 10:21 AM on Tuesday, October 13
- 2.0 ft at 5:51 PM on Wednesday, October 21
- 2.4 ft at 10:54 AM on Wednesday, October 14
- 2.7 ft at 4:53 PM on Tuesday, October 20
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 2:53 AM 7.5 ftL 9:13 AM 0.9 ftH 2:43 PM 8.7 ftL 9:55 PM -0.7 ft | 7:26 AM / 6:37 PM |
| Mon Oct 12 | H 3:39 AM 7.3 ftL 9:47 AM 1.4 ftH 3:12 PM 8.6 ftL 10:33 PM -0.7 ft | 7:28 AM / 6:35 PM |
| Tue Oct 13 | H 4:23 AM 7.1 ftL 10:21 AM 1.9 ftH 3:40 PM 8.4 ftL 11:09 PM -0.5 ft | 7:29 AM / 6:33 PM |
| Wed Oct 14 | H 5:09 AM 6.8 ftL 10:54 AM 2.4 ftH 4:08 PM 8.2 ftL 11:46 PM -0.1 ft | 7:31 AM / 6:31 PM |
| Thu Oct 15 | H 5:57 AM 6.4 ftL 11:30 AM 2.8 ftH 4:40 PM 7.9 ft | 7:32 AM / 6:29 PM |
| Fri Oct 16 | L 12:26 AM 0.2 ftH 6:49 AM 6.1 ftL 12:12 PM 3.1 ftH 5:18 PM 7.5 ft | 7:33 AM / 6:28 PM |
| Sat Oct 17 | L 1:13 AM 0.6 ftH 7:49 AM 5.9 ftL 1:06 PM 3.4 ftH 6:07 PM 7.1 ft | 7:35 AM / 6:26 PM |
| Sun Oct 18 | L 2:13 AM 0.9 ftH 8:53 AM 5.9 ftL 2:20 PM 3.5 ftH 7:14 PM 6.6 ft | 7:36 AM / 6:24 PM |
| Mon Oct 19 | L 3:22 AM 1.0 ftH 9:54 AM 6.1 ftL 3:42 PM 3.2 ftH 8:38 PM 6.3 ft | 7:37 AM / 6:22 PM |
| Tue Oct 20 | L 4:26 AM 1.0 ftH 10:45 AM 6.5 ftL 4:53 PM 2.7 ftH 10:00 PM 6.3 ft | 7:39 AM / 6:20 PM |
| Wed Oct 21 | L 5:19 AM 0.8 ftH 11:27 AM 6.9 ftL 5:51 PM 2.0 ftH 11:08 PM 6.6 ft | 7:40 AM / 6:19 PM |
| Thu Oct 22 | L 6:04 AM 0.8 ftH 12:02 PM 7.4 ftL 6:41 PM 1.2 ft | 7:42 AM / 6:17 PM |
| Fri Oct 23 | H 12:06 AM 6.9 ftL 6:45 AM 0.8 ftH 12:33 PM 7.9 ftL 7:26 PM 0.5 ft | 7:43 AM / 6:15 PM |
| Sat Oct 24 | H 12:59 AM 7.2 ftL 7:24 AM 0.9 ftH 1:03 PM 8.4 ftL 8:09 PM -0.2 ft | 7:44 AM / 6:14 PM |
| Sun Oct 25 | H 1:48 AM 7.4 ftL 8:02 AM 1.2 ftH 1:34 PM 8.9 ftL 8:51 PM -0.7 ft | 7:46 AM / 6:12 PM |
| Mon Oct 26 | H 2:37 AM 7.5 ftL 8:41 AM 1.6 ftH 2:07 PM 9.2 ftL 9:34 PM -1.1 ft | 7:47 AM / 6:10 PM |
| Tue Oct 27 | H 3:26 AM 7.5 ftL 9:21 AM 1.9 ftH 2:42 PM 9.5 ftL 10:19 PM -1.2 ft | 7:49 AM / 6:09 PM |
| Wed Oct 28 | H 4:17 AM 7.4 ftL 10:04 AM 2.3 ftH 3:22 PM 9.6 ftL 11:06 PM -1.1 ft | 7:50 AM / 6:07 PM |
| Thu Oct 29 | H 5:10 AM 7.2 ftL 10:50 AM 2.6 ftH 4:06 PM 9.4 ftL 11:56 PM -0.9 ft | 7:52 AM / 6:06 PM |
| Fri Oct 30 | H 6:07 AM 6.9 ftL 11:41 AM 2.8 ftH 4:57 PM 8.9 ft | 7:53 AM / 6:04 PM |
| Sat Oct 31 | L 12:52 AM -0.5 ftH 7:09 AM 6.8 ftL 12:44 PM 3.0 ftH 5:57 PM 8.3 ft | 7:54 AM / 6:03 PM |
| Sun Nov 1 | L 1:56 AM -0.1 ftH 7:14 AM 6.8 ftL 1:00 PM 3.0 ftH 6:11 PM 7.6 ft | 6:56 AM / 5:01 PM |
| Mon Nov 2 | L 2:04 AM 0.2 ftH 8:17 AM 7.0 ftL 2:24 PM 2.7 ftH 7:37 PM 7.1 ft | 6:57 AM / 5:00 PM |
| Tue Nov 3 | L 3:10 AM 0.4 ftH 9:15 AM 7.4 ftL 3:42 PM 2.1 ftH 9:01 PM 6.9 ft | 6:59 AM / 4:58 PM |
| Wed Nov 4 | L 4:08 AM 0.6 ftH 10:05 AM 7.9 ftL 4:48 PM 1.3 ftH 10:14 PM 7.0 ft | 7:00 AM / 4:57 PM |
| Thu Nov 5 | L 4:58 AM 0.8 ftH 10:48 AM 8.4 ftL 5:44 PM 0.5 ftH 11:16 PM 7.1 ft | 7:02 AM / 4:56 PM |
| Fri Nov 6 | L 5:43 AM 1.1 ftH 11:26 AM 8.8 ftL 6:32 PM -0.1 ft | 7:03 AM / 4:54 PM |
| Sat Nov 7 | H 12:10 AM 7.3 ftL 6:24 AM 1.4 ftH 12:01 PM 9.0 ftL 7:16 PM -0.5 ft | 7:05 AM / 4:53 PM |
| Sun Nov 8 | H 12:59 AM 7.4 ftL 7:03 AM 1.8 ftH 12:34 PM 9.0 ftL 7:57 PM -0.7 ft | 7:06 AM / 4:52 PM |
| Mon Nov 9 | H 1:46 AM 7.4 ftL 7:42 AM 2.2 ftH 1:04 PM 9.0 ftL 8:35 PM -0.7 ft | 7:07 AM / 4:50 PM |
| Tue Nov 10 | H 2:30 AM 7.4 ftL 8:19 AM 2.6 ftH 1:34 PM 8.9 ftL 9:12 PM -0.6 ft | 7:09 AM / 4:49 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 Knappa, Knappa Slough
Boat ramps
- Aldrich Point Boat Ramp 4.7 mi
Distances from the tide station. Places from © OpenStreetMap contributors; links open in Google Maps.
Fish in the waters around Knappa, Knappa Slough
16 kinds of fish, sharks and rays have been recorded within 15 km (about 9 miles) of this spot, most often Cutthroat Trout, Peamouth, Prickly Sculpin. The bar shows how many records each has.
- Cutthroat Trout Oncorhynchus clarkiiSalt water · 111 records
- Peamouth Mylocheilus caurinusBrackish water · 19 records
- Prickly Sculpin Cottus asperSalt water · 17 records
- Coastrange Sculpin Cottus aleuticusSalt water · 16 records
- Yellow Perch Perca flavescensBrackish water · 8 records
- Coho Salmon Oncorhynchus kisutchSalt water · 8 records
- White Sturgeon Acipenser transmontanusSalt water · 6 records
- Rainbow Trout Oncorhynchus mykissSalt water · 5 records
- Three-spined Stickleback Gasterosteus aculeatusSalt water · 4 records
- Banded Killifish Fundulus diaphanusBrackish water · 4 records
- American Shad Alosa sapidissimaSalt water · 2 records
- Chum Salmon Oncorhynchus ketaSalt water · 2 records
- King Salmon Oncorhynchus tshawytschaSalt water · 2 records
- Shiner Perch Cymatogaster aggregataSalt water · 1 record
- Surf Smelt Hypomesus pretiosusSalt water · 1 record
- Burbot Lota lotaBrackish water · 1 record
Fresh water nearby · 12 species
Rivers, creeks and ponds within 15 km, not the tidal water itself.
- Riffle Sculpin Cottus gulosusFresh water · 8 records
- Largemouth Bass Micropterus salmoidesFresh water · 6 records
- Northern Pikeminnow Ptychocheilus oregonensisFresh water · 6 records
- Black Crappie Pomoxis nigromaculatusFresh water · 5 records
- Reticulate Sculpin Cottus perplexusFresh water · 4 records
- Yellow Bullhead Ameiurus natalisFresh water · 4 records
- White Crappie Pomoxis annularisFresh water · 4 records
- Torrent Sculpin Cottus rhotheusFresh water · 3 records
- Bluegill Lepomis macrochirusFresh water · 3 records
- Shorthead Sculpin Cottus confususFresh water · 2 records
- Largescale Sucker Catostomus macrocheilusFresh water · 2 records
- Sand Roller Percopsis transmontanaFresh water · 1 record
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 Knappa, Knappa Slough
Knappa, Knappa Slough gets two high tides and two low tides almost every day, and the two highs are close in height. Over the next month the water typically rises or falls about 6.5 ft between a high and the next low.
The biggest swings in this window come around Tuesday, October 27, when the day's range reaches 10.7 ft, and again around Sunday, November 8 (9.7 ft). Those spring tides follow the new and full moon by a day or two. The calmest day is Monday, October 19, with only 5.3 ft between the day's highest and lowest water.
The lowest tide of the month is -1.2 ft at 10:19 PM on Tuesday, October 27. There are 17 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 9.6 ft at 3:22 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: 9439069
- Type: subordinate (adjusted from a reference station)
- Location: 46.1867, -123.5880
Reference station: Astoria (Tongue Point), Oreg..
Nearby tide stations
- Settlers Point, Oreg. 4 mi
- Skamokawa 9 mi
- Astoria (Tongue Point), Oreg. 9 mi
- Wauna 9 mi
- Cathcart Landing, Youngs River 11 mi
- Astoria (Youngs Bay), Oreg. 12 mi