Castle Lake Water Level
USGS gauge 14240446 · near Mount St. Helens, WA
Latest reading Oct 26, 2:45 PM · elevation
Castle Lake is at 2,577.76 ft today. It has risen 0.06 ft since yesterday and is up 0.06 ft over 7 days.
Water level chart
ft above sea levelReading
Castle Lake fishing report & conditions
updated Oct 26, 6:49 PM ETLevel steady, calm wind — good fall fishing day (6/10), best window 8:06 AM–9:06 AM (moonset near sunrise).
- Water temp—no water-temperature sensor on this water yet
- Air temphigh 44°F / low 41°FLight Rain Likely
- WindCalm1–4 mph 6 AM–6 PM, gusts to 9
- Level2,577.76 ftLevel steady (+0.06 ft in 24 h)
Official Washington fishing report: Washington Department of Fish & Wildlife — Fishing and stocking reports
Best fishing times today
Today is a good fishing day (solunar + local conditions)
6/10
Full moon · 99% lit · New moon Sun, Nov 8 · Sunrise 7:42 AM · Sunset 6:03 PM
Major fishing times
- Moon underfoot12:22 PM–2:22 PM
Minor fishing times
- Moonset8:06 AM–9:06 AMSunrise
- Moonrise5:28 PM–6:28 PMSunset
Fishing times for the next 7 days
| TodayOct 26 | 6/10Good | Major 12:22 PM–2:22 PM Minor 8:06 AM–9:06 AM · 5:28 PM–6:28 PM Calm wind 1–4 mph |
|---|---|---|
| TueOct 27 | 4/10Fair | Major 12:51 AM–2:51 AM · 1:21 PM–3:21 PM Minor 9:30 AM–10:30 AM · 6:05 PM–7:05 PM Calm wind 1–5 mph |
| WedOct 28 | 4/10Fair | Major 1:52 AM–3:52 AM · 2:24 PM–4:24 PM Minor 10:50 AM–11:50 AM · 6:54 PM–7:54 PM Light wind 2–8 mph |
| ThuOct 29 | 4/10Fair | Major 2:56 AM–4:56 AM · 3:29 PM–5:29 PM Minor 12:01 PM–1:01 PM · 7:58 PM–8:58 PM Calm wind 1–5 mph |
| FriOct 30 | 3/10Poor | Major 4:01 AM–6:01 AM · 4:32 PM–6:32 PM Minor 12:57 PM–1:57 PM · 9:12 PM–10:12 PM Calm wind 0–2 mph |
| SatOct 31 | 4/10Fair | Major 5:02 AM–7:02 AM · 5:32 PM–7:32 PM Minor 1:39 PM–2:39 PM · 10:33 PM–11:33 PM Calm wind 0–1 mph |
| SunNov 1 | 4/10Fair | Major 5:00 AM–7:00 AM · 5:26 PM–7:26 PM Minor 1:10 PM–2:10 PM · 10:53 PM–11:53 PM Calm wind 0–1 mph |
How this rating works
Solunar theory says fish feed more when the moon is overhead or underfoot (major periods, about 2 hours) and around moonrise and moonset (minor periods, about 1 hour). On a lake or river there is no tide, so instead of tide changes we score the local conditions anglers watch: the barometric pressure trend, the wind, whether the lake level is steady, and the water temperature where it is measured.
| Base | every day starts at 1 | 1 |
|---|---|---|
| Sunrise / sunset | a period overlaps sunrise or sunset ±1 h: major +2, minor +1 (max 3) (Moonset × sunrise +1; Moonrise × sunset +1) | 2 |
| Moon phase | within 2 days of a new or full moon +2, within 4 days +1 (today: 0.5 days) | 2 |
| Local conditions | pressure 6 AM→6 PM: falling +2, steady or slowly rising +1, rising fast 0 · daytime wind 4–15 mph +1, over 20 mph (or gusts over 30) −1 · level within ±0.25 ft in 24 h +1 · water 55–75°F +1, below 45°F or above 85°F −1 (0 to 4 in total)
| 1 |
| Today | 6, rounded | 6/10 |
1–3 poor · 4–5 fair · 6–7 good · 8–10 excellent. Pressure and wind are the NOAA National Weather Service hourly forecast for this spot; the level/flow trend is the latest 24 hours of readings on this page. Days 2–7 score sun, moon, forecast pressure and forecast wind only (level and water temperature aren’t forecast). Solunar times are a rule of thumb, not a guarantee.
Solunar periods calculated for 46.26, -122.27 (moon times from astronomical equations, Castle Lake local time).
Weather & wind at Castle Lake
air temperature, not water3-day forecast
- This Afternoon44° / 41°Light Rain LikelyWind SSW 2 mphRain 90%
- Tuesday43° / 38°Light RainWind W 1 to 5 mphRain 100%
- Wednesday40° / 36°Rain And SnowWind SW 2 to 8 mphRain 100%
NOAA National Weather Service forecast for 46.256, -122.274 (grid PQR), issued Oct 26, 3:41 PM local time. High / low are air temperatures; water temperature is in the fishing section above. The “Air temp & weather” tile at the top refreshes live.
Past 12 months
daily readings from the operator- Today2,577.76 ft
- 12-month high2,577.96 ftJun 27, 2026
- 12-month low2,577.52 ftSep 1, 2026
Last 10 days
| Date | Level (ft) | Change |
|---|---|---|
| Mon Oct 26 (today) | 2,577.73 | +0.05 |
| Sun Oct 25 | 2,577.68 | +0.01 |
| Sat Oct 24 | 2,577.67 | −0.01 |
| Fri Oct 23 | 2,577.68 | ±0.00 |
| Thu Oct 22 | 2,577.68 | −0.01 |
| Wed Oct 21 | 2,577.69 | ±0.00 |
| Tue Oct 20 | 2,577.69 | −0.01 |
| Mon Oct 19 | 2,577.70 | ±0.00 |
| Sun Oct 18 | 2,577.70 | −0.01 |
| Sat Oct 17 | 2,577.71 | ±0.00 |
Daily mean of all readings that day; today is the average so far.
Plan your trip to Castle Lake
Affiliate linksPlaces to stay near Castle Lake
Search lake houses, cabins & hotels near Castle Lake → via Stay22
Affiliate links: if you book through Stay22, GetYourGuide or Viator we may earn a commission, at no extra cost to you. It doesn’t affect the data on this page. How this works
Nearby lakes & rivers
- Spirit Lake6 mi · Lake · Tunnel at Spirit Lake3,403.36 ft24h −0.01 ft
- Swift Reservoir 3.2 Mi East of Dam15 mi · Lake · Cougar952.00 ft24h ±0.00 ft
- Yale Reservoir16 mi · Lake · Cougar472.00 ft24h +1.00 ft
- Lake Merwin20 mi · Lake · Chelatchie229.00 ft24h −1.00 ft
- Bull Run Reservoir No 154 mi · Lake · Bull Run977.73 ft24h +0.01 ft
- Willamette River at Portland54 mi · River-20,300.00 cfs-128% of normal
About this data
- Gauge
- USGS 14240446 — Castle Lake Near Mount St. Helens, Wa
- Location
- 46.2564, -122.2744 · Washington
- Measures
- Lake/reservoir water-surface elevation above NGVD 1929
- Daily statistics
- Not available (approved daily values)
- Latest reading
- Oct 26, 2:45 PM local time (provisional)
- Page built
- Oct 26, 2026 6:49 PM ET
Source: U.S. Geological Survey Water Data for the Nation (USGS monitoring location page). Readings every 15–60 minutes; the newest values are provisional. Percentiles compare today’s reading with every past year’s daily mean for the same calendar date. Weather: NOAA National Weather Service.