46.1867’ N, 123.5880’ W

Knappa, Knappa Slough, OR

51°
H -°
L 47°
SSE
3mph
Low tide
10:58 pm

Tides Today & Tomorrow in Knappa, Knappa Slough, OR

TIDE TIMES for Saturday, November 14, 2026
The tide is currently falling in Knappa, Knappa Slough, OR.
Next low tide (tomorrow) : in 28m at 10:58 pm (0.2 ft)
Next high tide : 5:25 am (6.7 ft)
Sunset today : 4:44 pm
Sunrise tomorrow : 7:12 am
Moon phase : Waxing Crescent (18% illuminated)
Tide Station Location : Station #9439069
Common Questions About Tides

Knappa, Knappa Slough, OR Tides - Jun 1925

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon8:486.19:387.63:362.13:341.24:267:57Waxing Gibbous1Mon
2Tue10:016.310:208.04:361.44:271.34:257:58Waxing Gibbous2Tue
3Wed11:056.611:028.55:300.75:181.44:257:59Waxing Gibbous3Wed
4Thu12:046.96:210.06:081.64:248:00Waxing Gibbous4Thu
5Fri12:587.27:10-0.66:571.84:248:01Full Moon5Fri
6Sat12:259.31:517.47:58-1.17:471.94:238:01Full Moon6Sat
7Sun1:089.62:437.68:46-1.48:382.04:238:02Full Moon7Sun
8Mon1:549.63:347.69:34-1.59:292.14:228:03Waning Gibbous8Mon
9Tue2:439.54:267.710:22-1.510:232.14:228:04Waning Gibbous9Tue
10Wed3:359.15:187.711:11-1.211:192.14:228:04Waning Gibbous10Wed
11Thu4:318.56:117.712:01-0.84:228:05Third Quarter11Thu
12Fri5:337.97:057.712:212.112:54-0.34:228:05Third Quarter12Fri
13Sat6:427.28:007.91:291.91:510.24:218:06Third Quarter13Sat
14Sun7:566.78:538.12:411.62:490.64:218:06Third Quarter14Sun
15Mon9:116.49:438.33:501.13:451.04:218:07Waning Crescent15Mon
16Tue10:216.510:308.54:520.64:381.34:218:07Waning Crescent16Tue
17Wed11:226.611:128.65:470.05:281.64:218:08Waning Crescent17Wed
18Thu12:166.86:35-0.36:151.94:218:08Waning Crescent18Thu
19Fri1:057.07:20-0.66:592.14:228:08New Moon19Fri
20Sat12:288.61:517.18:01-0.77:422.34:228:09New Moon20Sat
21Sun1:038.52:347.18:39-0.78:232.54:228:09New Moon21Sun
22Mon1:378.43:147.19:15-0.79:032.54:228:09New Moon22Mon
23Tue2:118.23:537.19:49-0.69:422.54:228:09Waxing Crescent23Tue
24Wed2:458.04:307.010:22-0.410:212.54:238:09Waxing Crescent24Wed
25Thu3:227.85:067.010:53-0.311:022.54:238:10Waxing Crescent25Thu
26Fri4:027.55:437.011:260.011:482.44:238:10Waxing Crescent26Fri
27Sat4:487.06:227.012:030.24:248:10First Quarter27Sat
28Sun5:446.57:057.212:422.312:470.64:248:10First Quarter28Sun
29Mon6:536.17:507.41:452.11:381.04:258:09First Quarter29Mon
30Tue8:135.88:397.82:541.62:371.34:258:09First Quarter30Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9439069)

Common Questions About Knappa, Knappa Slough, OR Tides

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Is this week a spring tide or neap tide in Knappa, Knappa Slough, OR?

Knappa, Knappa Slough, OR is currently in a spring phase. Tonight's moon is 18% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are near their weekly maximum.

What datum are Knappa, Knappa Slough, OR tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for Knappa, Knappa Slough, OR?

Tide predictions for Knappa, Knappa Slough, OR come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for Knappa, Knappa Slough, OR?

Tide data for Knappa, Knappa Slough, OR is sourced from NOAA Station #9439069. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9439069.

What is the moon phase in Knappa, Knappa Slough, OR tonight?

Tonight the moon over Knappa, Knappa Slough, OR is Waxing Crescent (18% illuminated). This places Knappa, Knappa Slough, OR in a spring tide cycle, so tidal ranges are near their weekly maximum this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA