Knappa Tides February 2023 | Tide Charts & Tables | Columbia River, OR

Knappa Tide Chart for (Wed) February 1, 2023

Knappa tide chart for Wednesday, February 1, 2023
Knappa tides for Feb 1st, the sunrise is 7:36am-5:19pm and the tide times are L 4:48am 3'6" H 10:19am 8'3" L 6:21pm 0'3" .

Knappa Tide Chart for (Thu) February 2, 2023

Knappa tide chart for Thursday, February 2, 2023
Knappa tides for Feb 2nd, the sunrise is 7:35am-5:20pm and the tide times are H 12:16am 6'8" L 5:48am 3'5" H 11:10am 8'4" L 7:07pm 0'0" .

Knappa Tide Chart for (Fri) February 3, 2023

Knappa tide chart for Friday, February 3, 2023
Knappa tides for Feb 3rd, the sunrise is 7:34am-5:22pm and the tide times are H 1:01am 7'0" L 6:41am 3'3" H 11:57am 8'5" L 7:47pm -0'0" .

Knappa Tide Chart for (Sat) February 4, 2023

Knappa tide chart for Saturday, February 4, 2023
Knappa tides for Feb 4th, the sunrise is 7:33am-5:23pm and the tide times are H 1:41am 7'3" L 7:27am 3'1" H 12:40pm 8'6" L 8:23pm -0'1" .

Knappa Tide Chart for (Sun) February 5, 2023

Knappa tide chart for Sunday, February 5, 2023
Knappa tides for Feb 5th, the sunrise is 7:31am-5:25pm and the tide times are H 2:16am 7'5" L 8:09am 2'10" H 1:21pm 8'6" L 8:55pm -0'0" .

Knappa Tide Chart for (Mon) February 6, 2023

Knappa tide chart for Monday, February 6, 2023
Knappa tides for Feb 6th, the sunrise is 7:30am-5:26pm and the tide times are H 2:48am 7'7" L 8:49am 2'8" H 1:59pm 8'6" L 9:25pm 0'0" .

Knappa Tide Chart for (Tue) February 7, 2023

Knappa tide chart for Tuesday, February 7, 2023
Knappa tides for Feb 7th, the sunrise is 7:29am-5:28pm and the tide times are H 3:18am 7'8" L 9:25am 2'5" H 2:36pm 8'4" L 9:51pm 0'2" .

Knappa Tide Chart for (Wed) February 8, 2023

Knappa tide chart for Wednesday, February 8, 2023
Knappa tides for Feb 8th, the sunrise is 7:27am-5:29pm and the tide times are H 3:44am 7'10" L 10:01am 2'2" H 3:14pm 8'1" L 10:16pm 0'5" .

Knappa Tide Chart for (Thu) February 9, 2023

Knappa tide chart for Thursday, February 9, 2023
Knappa tides for Feb 9th, the sunrise is 7:26am-5:31pm and the tide times are H 4:08am 8'0" L 10:37am 2'0" H 3:53pm 7'9" L 10:41pm 0'9" .

Knappa Tide Chart for (Fri) February 10, 2023

Knappa tide chart for Friday, February 10, 2023
Knappa tides for Feb 10th, the sunrise is 7:25am-5:32pm and the tide times are H 4:33am 8'3" L 11:16am 1'9" H 4:36pm 7'3" L 11:09pm 1'2" .

Knappa Tide Chart for (Sat) February 11, 2023

Knappa tide chart for Saturday, February 11, 2023
Knappa tides for Feb 11th, the sunrise is 7:23am-5:34pm and the tide times are H 5:00am 8'5" L 11:59am 1'6" H 5:28pm 6'8" L 11:42pm 1'9" .

Knappa Tide Chart for (Sun) February 12, 2023

Knappa tide chart for Sunday, February 12, 2023
Knappa tides for Feb 12th, the sunrise is 7:22am-5:35pm and the tide times are H 5:34am 8'6" L 12:52pm 1'5" H 6:35pm 6'1" .

Knappa Tide Chart for (Mon) February 13, 2023

Knappa tide chart for Monday, February 13, 2023
Knappa tides for Feb 13th, the sunrise is 7:20am-5:37pm and the tide times are L 12:22am 2'4" H 6:15am 8'6" L 2:00pm 1'3" H 8:01pm 5'8" .

Knappa Tide Chart for (Tue) February 14, 2023

Knappa tide chart for Tuesday, February 14, 2023
Knappa tides for Feb 14th, the sunrise is 7:18am-5:38pm and the tide times are L 1:16am 2'11" H 7:09am 8'6" L 3:20pm 0'11" H 9:32pm 5'8" .

Knappa Tide Chart for (Wed) February 15, 2023

Knappa tide chart for Wednesday, February 15, 2023
Knappa tides for Feb 15th, the sunrise is 7:17am-5:40pm and the tide times are L 2:30am 3'5" H 8:17am 8'6" L 4:39pm 0'5" H 10:50pm 6'1" .

Knappa Tide Chart for (Thu) February 16, 2023

Knappa tide chart for Thursday, February 16, 2023
Knappa tides for Feb 16th, the sunrise is 7:15am-5:41pm and the tide times are L 3:59am 3'7" H 9:32am 8'7" L 5:46pm -0'0" H 11:52pm 6'7" .

Knappa Tide Chart for (Fri) February 17, 2023

Knappa tide chart for Friday, February 17, 2023
Knappa tides for Feb 17th, the sunrise is 7:14am-5:43pm and the tide times are L 5:18am 3'4" H 10:43am 8'11" L 6:43pm -0'6" .

Knappa Tide Chart for (Sat) February 18, 2023

Knappa tide chart for Saturday, February 18, 2023
Knappa tides for Feb 18th, the sunrise is 7:12am-5:44pm and the tide times are H 12:43am 7'2" L 6:25am 2'11" H 11:48am 9'3" L 7:33pm -0'10" .

Knappa Tide Chart for (Sun) February 19, 2023

Knappa tide chart for Sunday, February 19, 2023
Knappa tides for Feb 19th, the sunrise is 7:10am-5:46pm and the tide times are H 1:28am 7'8" L 7:24am 2'4" H 12:46pm 9'6" L 8:18pm -1'0" .

Knappa Tide Chart for (Mon) February 20, 2023

Knappa tide chart for Monday, February 20, 2023
Knappa tides for Feb 20th, the sunrise is 7:09am-5:47pm and the tide times are H 2:10am 8'2" L 8:17am 1'9" H 1:41pm 9'6" L 9:00pm -0'11" .

Knappa Tide Chart for (Tue) February 21, 2023

Knappa tide chart for Tuesday, February 21, 2023
Knappa tides for Feb 21st, the sunrise is 7:07am-5:48pm and the tide times are H 2:49am 8'6" L 9:08am 1'3" H 2:33pm 9'3" L 9:39pm -0'7" .

Knappa Tide Chart for (Wed) February 22, 2023

Knappa tide chart for Wednesday, February 22, 2023
Knappa tides for Feb 22nd, the sunrise is 7:05am-5:50pm and the tide times are H 3:26am 8'10" L 9:58am 0'10" H 3:23pm 8'10" L 10:16pm -0'1" .

Knappa Tide Chart for (Thu) February 23, 2023

Knappa tide chart for Thursday, February 23, 2023
Knappa tides for Feb 23rd, the sunrise is 7:04am-5:51pm and the tide times are H 4:02am 9'0" L 10:47am 0'7" H 4:14pm 8'2" L 10:52pm 0'6" .

Knappa Tide Chart for (Fri) February 24, 2023

Knappa tide chart for Friday, February 24, 2023
Knappa tides for Feb 24th, the sunrise is 7:02am-5:53pm and the tide times are H 4:37am 9'0" L 11:36am 0'7" H 5:07pm 7'5" L 11:29pm 1'3" .

Knappa Tide Chart for (Sat) February 25, 2023

Knappa tide chart for Saturday, February 25, 2023
Knappa tides for Feb 25th, the sunrise is 7:00am-5:54pm and the tide times are H 5:13am 8'10" L 12:29pm 0'8" H 6:05pm 6'8" .

Knappa Tide Chart for (Sun) February 26, 2023

Knappa tide chart for Sunday, February 26, 2023
Knappa tides for Feb 26th, the sunrise is 6:58am-5:56pm and the tide times are L 12:09am 1'11" H 5:52am 8'6" L 1:28pm 0'10" H 7:13pm 6'1" .

Knappa Tide Chart for (Mon) February 27, 2023

Knappa tide chart for Monday, February 27, 2023
Knappa tides for Feb 27th, the sunrise is 6:57am-5:57pm and the tide times are L 12:55am 2'8" H 6:37am 8'1" L 2:35pm 1'0" H 8:31pm 5'9" .

Knappa Tide Chart for (Tue) February 28, 2023

Knappa tide chart for Tuesday, February 28, 2023
Knappa tides for Feb 28th, the sunrise is 6:55am-5:59pm and the tide times are L 1:55am 3'2" H 7:33am 7'8" L 3:48pm 0'11" H 9:50pm 5'10" .

Knappa Tide Calendar | February 2023

Sun Mon Tue Wed Thu Fri Sat
 
 

Restricted days available with membership — details below


Knappa Tide Table for February 2023

View tide tables in a column-row format below, with a "diff" column to spot large tide height swings—great for anglers. Scroll down for a textual format, ideal for reading or sharing.

- diff Tides diff Tides diff Tides diff Tides diff Sun Moon
2/1 N/A L 3'6" 4:48AM 4'9" H 8'3" 10:19AM 8'0" L 0'3" 6:21PM 6'5" - - - - 07:36-17:19 13:19-05:21
2/2 6'5" H 6'8" 12:16AM 3'3" L 3'5" 5:48AM 4'10" H 8'4" 11:10AM 8'3" L 0'0" 7:07PM 6'11" 07:35-17:20 14:11-06:15
2/3 6'11" H 7'0" 1:01AM 3'8" L 3'3" 6:41AM 5'1" H 8'5" 11:57AM 8'5" L -0'0" 7:47PM 7'3" 07:34-17:22 15:10-06:59
2/4 7'3" H 7'3" 1:41AM 4'1" L 3'1" 7:27AM 5'4" H 8'6" 12:40PM 8'7" L -0'1" 8:23PM 7'6" 07:33-17:23 16:14-07:35
2/5 7'6" H 7'5" 2:16AM 4'6" L 2'10" 8:09AM 5'7" H 8'6" 1:21PM 8'7" L -0'0" 8:55PM 7'7" 07:31-17:25 17:21-08:03
2/6 7'7" H 7'7" 2:48AM 4'10" L 2'8" 8:49AM 5'9" H 8'6" 1:59PM 8'5" L 0'0" 9:25PM 7'8" 07:30-17:26 18:28-08:26
2/7 7'8" H 7'8" 3:18AM 5'3" L 2'5" 9:25AM 5'11" H 8'4" 2:36PM 8'2" L 0'2" 9:51PM 7'8" 07:29-17:28 19:34-08:45
2/8 7'8" H 7'10" 3:44AM 5'7" L 2'2" 10:01AM 5'11" H 8'1" 3:14PM 7'8" L 0'5" 10:16PM 7'7" 07:27-17:29 20:40-09:03
2/9 7'7" H 8'0" 4:08AM 6'0" L 2'0" 10:37AM 5'9" H 7'9" 3:53PM 7 L 0'9" 10:41PM 7'5" 07:26-17:31 21:46-09:19
2/10 7'5" H 8'3" 4:33AM 6'5" L 1'9" 11:16AM 5'6" H 7'3" 4:36PM 6'0" L 1'2" 11:09PM 7'2" 07:25-17:32 22:55-09:35
2/11 7'2" H 8'5" 5:00AM 6'10" L 1'6" 11:59AM 5'1" H 6'8" 5:28PM 4'11" L 1'9" 11:42PM 6'9" 07:23-17:34 00:00-09:53
2/12 6'9" H 8'6" 5:34AM 7'1" L 1'5" 12:52PM 4'8" H 6'1" 6:35PM 3'8" - - - - 07:22-17:35 00:05-10:13
2/13 3'8" L 2'4" 12:22AM 6'2" H 8'6" 6:15AM 7'3" L 1'3" 2:00PM 4'5" H 5'8" 8:01PM 2'8" 07:20-17:37 01:20-10:39
2/14 2'8" L 2'11" 1:16AM 5'6" H 8'6" 7:09AM 7'6" L 0'11" 3:20PM 4'9" H 5'8" 9:32PM 2'3" 07:18-17:38 02:37-11:12
2/15 2'3" L 3'5" 2:30AM 5'0" H 8'6" 8:17AM 8'0" L 0'5" 4:39PM 5'7" H 6'1" 10:50PM 2'6" 07:17-17:40 03:54-11:57
2/16 2'6" L 3'7" 3:59AM 5'0" H 8'7" 9:32AM 8'8" L -0'0" 5:46PM 6'8" H 6'7" 11:52PM 3'3" 07:15-17:41 05:04-12:58
2/17 3'3" L 3'4" 5:18AM 5'6" H 8'11" 10:43AM 9'6" L -0'6" 6:43PM 7'9" - - - - 07:14-17:43 06:03-14:14
2/18 7'9" H 7'2" 12:43AM 4'3" L 2'11" 6:25AM 6'4" H 9'3" 11:48AM 10'2" L -0'10" 7:33PM 8'7" 07:12-17:44 06:49-15:39
2/19 8'7" H 7'8" 1:28AM 5'4" L 2'4" 7:24AM 7'1" H 9'6" 12:46PM 10'6" L -1'0" 8:18PM 9'2" 07:10-17:46 07:23-17:07
2/20 9'2" H 8'2" 2:10AM 6'4" L 1'9" 8:17AM 7'9" H 9'6" 1:41PM 10'5" L -0'11" 9:00PM 9'6" 07:09-17:47 07:51-18:32
2/21 9'6" H 8'6" 2:49AM 7'3" L 1'3" 9:08AM 8'0" H 9'3" 2:33PM 9'11" L -0'7" 9:39PM 9'6" 07:07-17:48 08:13-19:55
2/22 9'6" H 8'10" 3:26AM 8'0" L 0'10" 9:58AM 7'11" H 8'10" 3:23PM 8'11" L -0'1" 10:16PM 9'1" 07:05-17:50 08:33-21:14
2/23 9'1" H 9'0" 4:02AM 8'4" L 0'7" 10:47AM 7'6" H 8'2" 4:14PM 7'8" L 0'6" 10:52PM 8'6" 07:04-17:51 08:52-22:30
2/24 8'6" H 9'0" 4:37AM 8'5" L 0'7" 11:36AM 6'10" H 7'5" 5:07PM 6'2" L 1'3" 11:29PM 7'7" 07:02-17:53 09:12-23:45
2/25 7'7" H 8'10" 5:13AM 8'2" L 0'8" 12:29PM 6'0" H 6'8" 6:05PM 4'8" - - - - 07:00-17:54 09:34-00:00
2/26 4'8" L 1'11" 12:09AM 6'6" H 8'6" 5:52AM 7'8" L 0'10" 1:28PM 5'3" H 6'1" 7:13PM 3'5" 06:58-17:56 10:01-00:59
2/27 3'5" L 2'8" 12:55AM 5'5" H 8'1" 6:37AM 7'1" L 1'0" 2:35PM 4'9" H 5'9" 8:31PM 2'6" 06:57-17:57 10:34-02:09
2/28 2'6" L 3'2" 1:55AM 4'5" H 7'8" 7:33AM 6'8" L 0'11" 3:48PM 4'10" H 5'10" 9:50PM N/A 06:55-17:59 11:14-03:14

Knappa Textual Tide Table for February 2023


Feb 1st (Wed)
the sunrise is 7:36am-5:19pm and the tide times are L 4:48am 3'6" H 10:19am 8'3" L 6:21pm 0'3" .
Feb 2nd (Thu)
the sunrise is 7:35am-5:20pm and the tide times are H 12:16am 6'8" L 5:48am 3'5" H 11:10am 8'4" L 7:07pm 0'0" .
Feb 3rd (Fri)
the sunrise is 7:34am-5:22pm and the tide times are H 1:01am 7'0" L 6:41am 3'3" H 11:57am 8'5" L 7:47pm -0'0" .
Feb 4th (Sat)
the sunrise is 7:33am-5:23pm and the tide times are H 1:41am 7'3" L 7:27am 3'1" H 12:40pm 8'6" L 8:23pm -0'1" .
Feb 5th (Sun)
the sunrise is 7:31am-5:25pm and the tide times are H 2:16am 7'5" L 8:09am 2'10" H 1:21pm 8'6" L 8:55pm -0'0" .
Feb 6th (Mon)
the sunrise is 7:30am-5:26pm and the tide times are H 2:48am 7'7" L 8:49am 2'8" H 1:59pm 8'6" L 9:25pm 0'0" .
Feb 7th (Tue)
the sunrise is 7:29am-5:28pm and the tide times are H 3:18am 7'8" L 9:25am 2'5" H 2:36pm 8'4" L 9:51pm 0'2" .
Feb 8th (Wed)
the sunrise is 7:27am-5:29pm and the tide times are H 3:44am 7'10" L 10:01am 2'2" H 3:14pm 8'1" L 10:16pm 0'5" .
Feb 9th (Thu)
the sunrise is 7:26am-5:31pm and the tide times are H 4:08am 8'0" L 10:37am 2'0" H 3:53pm 7'9" L 10:41pm 0'9" .
Feb 10th (Fri)
the sunrise is 7:25am-5:32pm and the tide times are H 4:33am 8'3" L 11:16am 1'9" H 4:36pm 7'3" L 11:09pm 1'2" .
Feb 11th (Sat)
the sunrise is 7:23am-5:34pm and the tide times are H 5:00am 8'5" L 11:59am 1'6" H 5:28pm 6'8" L 11:42pm 1'9" .
Feb 12th (Sun)
the sunrise is 7:22am-5:35pm and the tide times are H 5:34am 8'6" L 12:52pm 1'5" H 6:35pm 6'1" .
Feb 13th (Mon)
the sunrise is 7:20am-5:37pm and the tide times are L 12:22am 2'4" H 6:15am 8'6" L 2:00pm 1'3" H 8:01pm 5'8" .
Feb 14th (Tue)
the sunrise is 7:18am-5:38pm and the tide times are L 1:16am 2'11" H 7:09am 8'6" L 3:20pm 0'11" H 9:32pm 5'8" .
Feb 15th (Wed)
the sunrise is 7:17am-5:40pm and the tide times are L 2:30am 3'5" H 8:17am 8'6" L 4:39pm 0'5" H 10:50pm 6'1" .
Feb 16th (Thu)
the sunrise is 7:15am-5:41pm and the tide times are L 3:59am 3'7" H 9:32am 8'7" L 5:46pm -0'0" H 11:52pm 6'7" .
Feb 17th (Fri)
the sunrise is 7:14am-5:43pm and the tide times are L 5:18am 3'4" H 10:43am 8'11" L 6:43pm -0'6" .
Feb 18th (Sat)
the sunrise is 7:12am-5:44pm and the tide times are H 12:43am 7'2" L 6:25am 2'11" H 11:48am 9'3" L 7:33pm -0'10" .
Feb 19th (Sun)
the sunrise is 7:10am-5:46pm and the tide times are H 1:28am 7'8" L 7:24am 2'4" H 12:46pm 9'6" L 8:18pm -1'0" .
Feb 20th (Mon)
the sunrise is 7:09am-5:47pm and the tide times are H 2:10am 8'2" L 8:17am 1'9" H 1:41pm 9'6" L 9:00pm -0'11" .
Feb 21st (Tue)
the sunrise is 7:07am-5:48pm and the tide times are H 2:49am 8'6" L 9:08am 1'3" H 2:33pm 9'3" L 9:39pm -0'7" .
Feb 22nd (Wed)
the sunrise is 7:05am-5:50pm and the tide times are H 3:26am 8'10" L 9:58am 0'10" H 3:23pm 8'10" L 10:16pm -0'1" .
Feb 23rd (Thu)
the sunrise is 7:04am-5:51pm and the tide times are H 4:02am 9'0" L 10:47am 0'7" H 4:14pm 8'2" L 10:52pm 0'6" .
Feb 24th (Fri)
the sunrise is 7:02am-5:53pm and the tide times are H 4:37am 9'0" L 11:36am 0'7" H 5:07pm 7'5" L 11:29pm 1'3" .
Feb 25th (Sat)
the sunrise is 7:00am-5:54pm and the tide times are H 5:13am 8'10" L 12:29pm 0'8" H 6:05pm 6'8" .
Feb 26th (Sun)
the sunrise is 6:58am-5:56pm and the tide times are L 12:09am 1'11" H 5:52am 8'6" L 1:28pm 0'10" H 7:13pm 6'1" .
Feb 27th (Mon)
the sunrise is 6:57am-5:57pm and the tide times are L 12:55am 2'8" H 6:37am 8'1" L 2:35pm 1'0" H 8:31pm 5'9" .
Feb 28th (Tue)
the sunrise is 6:55am-5:59pm and the tide times are L 1:55am 3'2" H 7:33am 7'8" L 3:48pm 0'11" H 9:50pm 5'10" .

Oregon Tides Map

Tides map. Large blue pin with white center = this station. Small blue pin = other tide stations. Red pins = tidepools covered by this tide station.

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NOAA/NWS Forecast for Knappa | Small Craft Advisory

Last updated: June 19, 2026, 6:07 AM

Small Craft Advisory

Small Craft Advisory issued June 19 at 1:11AM PDT until June 19 at 10:00AM PDT by NWS Portland OR

* WHAT...Rough bar conditions expected due to a strong ebb
current of 5.74 kt at 835 AM Friday. Seas 7 ft.

* WHERE...In the Main Channel of the Columbia River Bar.

* WHEN...From 5 AM to 10 AM PDT this morning.

* IMPACTS...Conditions will be hazardous to small craft,
especially when operating near to, or attempting to cross, the
Columbia River Bar.

Effective: June 19, 2026, 8:11 AM

Expires: June 19, 2026, 5:00 PM

Marine Forecast (PZZ210)

PZZ210-192230-
Columbia River Bar-
112 AM PDT Fri Jun 19 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM TO 10 AM PDT THIS
MORNING...

.IN THE MAIN CHANNEL...

.GENERAL SEAS...7 to 8 ft through Saturday morning.

.FIRST EBB...Strong ebb current of 5.74 kt at 835 AM Friday. Seas
8 ft.

.SECOND EBB...Ebb current of 3.85 kt at 927 PM Friday. Seas 7 to
8 ft.

.THIRD EBB...Ebb current of 4.89 kt at 929 AM Saturday. Seas 7 to
8 ft.

$$

Land Forecast (ORZ101)

TODAY: Sunny. Highs in the lower 70s. Northwest wind 5 to 10 mph.

TONIGHT: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 50s. West wind 5 to 10 mph.

SATURDAY: Mostly cloudy in the morning, then becoming partly sunny. Highs in the mid 60s. West wind 5 to 10 mph.

SATURDAY NIGHT: Mostly cloudy. Lows in the mid 50s. West wind 5 to 10 mph.

SUNDAY: Partly sunny in the morning, then clearing. Highs in the lower 70s. Light and variable winds, becoming northwest 5 to 10 mph in the afternoon.

SUNDAY NIGHT: Mostly clear. Lows in the mid 50s.

MONDAY: Sunny. Highs in the mid 80s.

MONDAY NIGHT: Mostly clear. Lows in the upper 50s.

TUESDAY: Mostly sunny. Highs in the lower 80s.

TUESDAY NIGHT: Partly cloudy. Lows in the mid 50s.

WEDNESDAY: Mostly sunny. Highs in the lower 70s.

WEDNESDAY NIGHT: Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 50s.

THURSDAY: Partly sunny. Highs in the upper 60s.

Last updated: June 19, 2026, 6:07 AM

ODFW

Oregon Department of Fish and Wildlife with current fishing regulations seasons bag size limits and area specific rules

Oregon State Parks

Oregon State Parks and beaches with coastal camping, reservations, beach access, and tidepooling opportunities

Columbia River Lower Section Boating Overview (Other)

Overview of lower Columbia River boating near Knappa including nearby access points, sloughs, and channels for fishing, small boat launches, and river exploration. Tidal influences and river flows are key for safe navigation and launches; good for planning trips with tide charts and awareness of currents in the Astoria/Knappa region. Check Oregon State Marine Board for updates on facilities and regulations.

Knappa Slough Columbia River Shore Access (Other)

Informal shore and slough access near Knappa on the lower Columbia River for small boats, kayaks, and fishing from shore or hand carry launches. Connects to main Columbia channels with opportunities for salmon fishing, crabbing, and tidal river travel. Strong tides and currents require caution for safe access and navigation; check Marine Board or local conditions for updates.

Lower Columbia River Boating Guide Oregon Marine Board (Other)

Oregon State Marine Board guide to the lower Columbia River including areas near Knappa and Knappa Slough with details on ramps, navigation, hazards, moorages, and facilities for recreational boating in the tidal lower river section. Useful for planning launches from nearby access points with notes on tides, currents, shoals, and safe travel in the Astoria vicinity.