Threemile Slough Tide Chart
California · NOAA Station 9415236 · 38.107°, -121.700°
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This Week’s Tides for Threemile Slough
High and low tide times and heights (ft, MLLW) for the week ahead.
| Low | 4:53 AM | 0.7 ft |
| High | 10:21 AM | 2.8 ft |
| Low | 3:49 PM | 0.9 ft |
| High | 10:29 PM | 4.0 ft |
| Low | 6:03 AM | 0.5 ft |
| High | 11:40 AM | 2.7 ft |
| Low | 4:35 PM | 1.3 ft |
| High | 11:11 PM | 4.0 ft |
| Low | 7:09 AM | 0.4 ft |
| High | 12:53 PM | 2.8 ft |
| Low | 5:29 PM | 1.6 ft |
| High | 11:55 PM | 4.1 ft |
| Low | 8:08 AM | 0.2 ft |
| High | 1:58 PM | 3.0 ft |
| Low | 6:28 PM | 1.9 ft |
| High | 12:38 AM | 4.2 ft |
| Low | 8:59 AM | 0.1 ft |
| High | 2:54 PM | 3.2 ft |
| Low | 7:28 PM | 2.0 ft |
| High | 1:20 AM | 4.2 ft |
| Low | 9:45 AM | 0.0 ft |
| High | 3:43 PM | 3.3 ft |
| Low | 8:23 PM | 2.1 ft |
| High | 2:01 AM | 4.3 ft |
| Low | 10:25 AM | 0.0 ft |
| High | 4:27 PM | 3.4 ft |
| Low | 9:15 PM | 2.0 ft |
Threemile Slough Tide Table — Next 30 Days
Every high and low tide for the next month at Threemile Slough, with heights in feet (MLLW), the daily tidal range, and sunrise & sunset.
| Day | Sunrise | Sunset | Tides (time · ft, MLLW) | Range | |||
|---|---|---|---|---|---|---|---|
| Tue, Jul 21Today | 6:00 AM | 8:26 PM | Low4:53 AM0.7 ft | High10:21 AM2.8 ft | Low3:49 PM0.9 ft | High10:29 PM4.0 ft | 3.3 ft |
| Wed, Jul 22 | 6:01 AM | 8:25 PM | Low6:03 AM0.5 ft | High11:40 AM2.7 ft | Low4:35 PM1.3 ft | High11:11 PM4.0 ft | 3.5 ft |
| Thu, Jul 23 | 6:02 AM | 8:24 PM | Low7:09 AM0.4 ft | High12:53 PM2.8 ft | Low5:29 PM1.6 ft | High11:55 PM4.1 ft | 3.7 ft |
| Fri, Jul 24 | 6:03 AM | 8:23 PM | Low8:08 AM0.2 ft | High1:58 PM3.0 ft | Low6:28 PM1.9 ft | — | 2.8 ft |
| Sat, Jul 25 | 6:04 AM | 8:23 PM | High12:38 AM4.2 ft | Low8:59 AM0.1 ft | High2:54 PM3.2 ft | Low7:28 PM2.0 ft | 4.1 ft |
| Sun, Jul 26 | 6:04 AM | 8:22 PM | High1:20 AM4.2 ft | Low9:45 AM0.0 ft | High3:43 PM3.3 ft | Low8:23 PM2.1 ft | 4.2 ft |
| Mon, Jul 27 | 6:05 AM | 8:21 PM | High2:01 AM4.3 ft | Low10:25 AM0.0 ft | High4:27 PM3.4 ft | Low9:15 PM2.0 ft | 4.3 ft |
| Tue, Jul 28 | 6:06 AM | 8:20 PM | High2:40 AM4.3 ft | Low11:01 AM-0.1 ft | High5:06 PM3.4 ft | Low10:01 PM1.9 ft | 4.4 ft |
| Wed, Jul 29 | 6:07 AM | 8:19 PM | High3:19 AM4.3 ft | Low11:32 AM-0.1 ft | High5:40 PM3.4 ft | Low10:45 PM1.8 ft | 4.4 ft |
| Thu, Jul 30 | 6:08 AM | 8:18 PM | High3:59 AM4.2 ft | Low11:57 AM-0.1 ft | High6:10 PM3.4 ft | Low11:27 PM1.6 ft | 4.3 ft |
| Fri, Jul 31 | 6:09 AM | 8:17 PM | High4:41 AM4.1 ft | Low12:19 PM0.0 ft | High6:34 PM3.5 ft | — | 4.1 ft |
| Sat, Aug 1 | 6:09 AM | 8:16 PM | Low12:08 AM1.4 ft | High5:24 AM3.9 ft | Low12:39 PM0.0 ft | High6:53 PM3.5 ft | 3.9 ft |
| Sun, Aug 2 | 6:10 AM | 8:15 PM | Low12:50 AM1.2 ft | High6:11 AM3.7 ft | Low1:03 PM0.1 ft | High7:14 PM3.7 ft | 3.6 ft |
| Mon, Aug 3 | 6:11 AM | 8:14 PM | Low1:37 AM1.0 ft | High7:03 AM3.4 ft | Low1:34 PM0.3 ft | High7:40 PM3.9 ft | 3.6 ft |
| Tue, Aug 4 | 6:12 AM | 8:13 PM | Low2:30 AM0.9 ft | High8:05 AM3.1 ft | Low2:11 PM0.6 ft | High8:16 PM4.2 ft | 3.6 ft |
| Wed, Aug 5 | 6:13 AM | 8:12 PM | Low3:38 AM0.9 ft | High9:28 AM2.8 ft | Low2:54 PM1.0 ft | High8:59 PM4.3 ft | 3.4 ft |
| Thu, Aug 6 | 6:14 AM | 8:11 PM | Low5:07 AM0.8 ft | High11:08 AM2.7 ft | Low3:47 PM1.4 ft | High9:51 PM4.5 ft | 3.7 ft |
| Fri, Aug 7 | 6:15 AM | 8:10 PM | Low6:33 AM0.6 ft | High12:37 PM2.8 ft | Low4:50 PM1.7 ft | High10:51 PM4.6 ft | 4.0 ft |
| Sat, Aug 8 | 6:15 AM | 8:09 PM | Low7:45 AM0.4 ft | High1:49 PM3.0 ft | Low6:04 PM1.9 ft | High11:58 PM4.7 ft | 4.3 ft |
| Sun, Aug 9 | 6:16 AM | 8:08 PM | Low8:45 AM0.1 ft | High2:48 PM3.2 ft | Low7:21 PM1.9 ft | — | 3.1 ft |
| Mon, Aug 10 | 6:17 AM | 8:06 PM | High1:07 AM4.7 ft | Low9:37 AM-0.1 ft | High3:39 PM3.4 ft | Low8:32 PM1.8 ft | 4.8 ft |
| Tue, Aug 11 | 6:18 AM | 8:05 PM | High2:10 AM4.7 ft | Low10:24 AM-0.2 ft | High4:24 PM3.5 ft | Low9:36 PM1.6 ft | 4.9 ft |
| Wed, Aug 12 | 6:19 AM | 8:04 PM | High3:09 AM4.7 ft | Low11:05 AM-0.2 ft | High5:06 PM3.6 ft | Low10:35 PM1.4 ft | 4.9 ft |
| Thu, Aug 13 | 6:20 AM | 8:03 PM | High4:03 AM4.5 ft | Low11:42 AM-0.1 ft | High5:45 PM3.7 ft | Low11:30 PM1.2 ft | 4.6 ft |
| Fri, Aug 14 | 6:21 AM | 8:02 PM | High4:56 AM4.3 ft | Low12:16 PM0.0 ft | High6:21 PM3.8 ft | — | 4.3 ft |
| Sat, Aug 15 | 6:22 AM | 8:00 PM | Low12:24 AM1.0 ft | High5:48 AM4.0 ft | Low12:46 PM0.2 ft | High6:54 PM3.8 ft | 3.8 ft |
| Sun, Aug 16 | 6:22 AM | 7:59 PM | Low1:17 AM0.8 ft | High6:42 AM3.6 ft | Low1:14 PM0.4 ft | High7:25 PM3.9 ft | 3.5 ft |
| Mon, Aug 17 | 6:23 AM | 7:58 PM | Low2:13 AM0.7 ft | High7:42 AM3.3 ft | Low1:42 PM0.7 ft | High7:55 PM3.9 ft | 3.2 ft |
| Tue, Aug 18 | 6:24 AM | 7:56 PM | Low3:13 AM0.7 ft | High8:50 AM3.0 ft | Low2:16 PM1.0 ft | High8:27 PM3.9 ft | 3.2 ft |
| Wed, Aug 19 | 6:25 AM | 7:55 PM | Low4:20 AM0.7 ft | High10:06 AM2.8 ft | Low2:57 PM1.4 ft | High9:04 PM3.9 ft | 3.2 ft |
About Threemile Slough tides
Tide predictions for Threemile Slough come from NOAA station 9415236 (California), computed from long-term harmonic analysis of observed water levels. Heights are shown in feet relative to MLLW (Mean Lower Low Water) — the same datum used on US nautical charts — so they line up directly with charted depths.
Threemile Slough typically sees a mixed semidiurnal tide, with two highs and two lows of differing heights each day. Use the curve above to time a harbor entrance, a beach walk, fishing a moving tide, or clearing a shallow bar — and remember that wind and pressure can push the real water level above or below prediction. The daily tidal range in the 30-day table shows how much water moves each day: bigger ranges around the new and full moon mean stronger currents.
Frequently asked
What time is high tide in Threemile Slough today?+
Today (Tuesday, July 21), high tide at Threemile Slough is at 10:21 AM (2.8 ft), 10:29 PM (4.0 ft). Heights are referenced to MLLW (Mean Lower Low Water).
What time is low tide in Threemile Slough today?+
Today, low tide at Threemile Slough is at 4:53 AM (0.7 ft), 3:49 PM (0.9 ft).
What tidal datum do these Threemile Slough tide heights use?+
All heights are given in feet relative to MLLW (Mean Lower Low Water), the standard NOAA chart datum for US tidal waters. A tide of 0.0 ft equals the chart datum; negative tides fall below it.
How accurate are these tide predictions?+
These are NOAA harmonic predictions — highly accurate for the astronomical tide. Real water levels can still differ with wind, barometric pressure, and storms, so always check current conditions before getting underway.
Never mistime a tide again.
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