Grand Lake Water Level
U.S. Bureau of Reclamation (Upper Colorado HydroData) · Colorado
Latest reading Oct 25, 12:00 AM · elevation · daily report
Grand Lake is at 8,366.61 ft as of Oct 25, 0.2 ft higher than a year ago. It has risen 0.02 ft since yesterday and is down 0.01 ft over 7 days.
Water level chart
ft above sea levelReading
Grand Lake fishing report & conditions
updated Oct 26, 12:50 PM ETLevel steady, light WSW wind — good fall fishing day (7/10), best window 7:39 AM–8:39 AM (moonset near sunrise).
- Water temp—no water-temperature sensor on this water yet
- Air temphigh 45°F / low 28°FChance Rain And Snow Showers then Partly Sunny
- WindLight WSW5–9 mph 6 AM–6 PM, gusts to 15
- Level8,366.61 ftLevel steady (+0.02 ft in 24 h)
Official Colorado fishing info: Colorado Parks and Wildlife — Fishing conditions & stocking report
Best fishing times today
Today is a good fishing day (solunar + local conditions)
7/10
Full moon · 99% lit · New moon Mon, Nov 9 · Sunrise 7:26 AM · Sunset 6:07 PM
Major fishing times
- Moon underfoot12:14 PM–2:14 PM
Minor fishing times
- Moonset7:39 AM–8:39 AMSunrise
- Moonrise5:40 PM–6:40 PMSunset
Fishing times for the next 7 days
| TodayOct 26 | 7/10Good | Major 12:14 PM–2:14 PM Minor 7:39 AM–8:39 AM · 5:40 PM–6:40 PM Light wind 5–9 mph |
|---|---|---|
| TueOct 27 | 5/10Fair | Major 12:42 AM–2:42 AM · 1:12 PM–3:12 PM Minor 8:57 AM–9:57 AM · 6:22 PM–7:22 PM Light wind 5–14 mph |
| WedOct 28 | 3/10Poor | Major 1:43 AM–3:43 AM · 2:15 PM–4:15 PM Minor 10:14 AM–11:14 AM · 7:14 PM–8:14 PM Light wind 4–14 mph |
| ThuOct 29 | 4/10Fair | Major 2:47 AM–4:47 AM · 3:20 PM–5:20 PM Minor 11:23 AM–12:23 PM · 8:17 PM–9:17 PM Calm wind 1–6 mph |
| FriOct 30 | 3/10Poor | Major 3:52 AM–5:52 AM · 4:23 PM–6:23 PM Minor 12:22 PM–1:22 PM · 9:29 PM–10:29 PM Calm wind 1–7 mph |
| SatOct 31 | 4/10Fair | Major 4:54 AM–6:54 AM · 5:23 PM–7:23 PM Minor 1:09 PM–2:09 PM · 10:44 PM–11:44 PM Calm wind 1–5 mph |
| SunNov 1 | 4/10Fair | Major 4:51 AM–6:51 AM · 5:18 PM–7:18 PM Minor 12:46 PM–1:46 PM · 10:59 PM–11:59 PM Calm wind 1–7 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)
| 2 |
| Today | 7, rounded | 7/10 |
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 40.24, -105.80 (moon times from astronomical equations, Grand Lake local time).
Weather & wind at Grand Lake
air temperature, not water3-day forecast
- Today45° / 28°Chance Rain And Snow Showers then Partly SunnyWind WSW 5 to 9 mphRain 31%
- Tuesday52° / 29°SunnyWind SSW 5 to 14 mphRain 0%
- Wednesday53° / 28°SunnyWind WSW 3 to 14 mphRain 0%
NOAA National Weather Service forecast for 40.242, -105.801 (grid BOU), issued Oct 26, 6:31 AM 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 U.S. Bureau of Reclamation (Upper Colorado HydroData)- Today8,366.61 ft
- Same date last year8,366.41 ft+0.2 ft change
- 12-month high8,366.83 ftMay 26, 2026
- 12-month low8,366.24 ftJul 25, 2026
Last 10 days
| Date | Level (ft) | Change |
|---|---|---|
| Sun Oct 25 | 8,366.61 | +0.02 |
| Sat Oct 24 | 8,366.59 | +0.02 |
| Fri Oct 23 | 8,366.57 | −0.03 |
| Thu Oct 22 | 8,366.60 | −0.03 |
| Wed Oct 21 | 8,366.63 | +0.04 |
| Tue Oct 20 | 8,366.59 | −0.02 |
| Mon Oct 19 | 8,366.61 | −0.01 |
| Sun Oct 18 | 8,366.62 | ±0.00 |
| Sat Oct 17 | 8,366.62 | +0.05 |
| Fri Oct 16 | 8,366.57 | −0.10 |
Daily mean of all readings that day; today is the average so far.
Nearby lakes & rivers
- Shadow Mountain Reservoir3 mi · Lake8,366.66 ft24h +0.01 ft
- Granby Reservoir7 mi · Lake8,234.79 ft24h −0.06 ft
- Willow Creek Reservoir10 mi · Lake8,117.23 ft24h +0.05 ft
- Marys Lake16 mi · Lake8,026.43 ft24h −2.70 ft
- Lake Estes (Olympus Dam)19 mi · Lake7,471.18 ft24h +1.33 ft
- Williams Fork Reservoir26 mi · Lake7,739.42 ft24h −0.20 ft
About this data
- Source
- U.S. Bureau of Reclamation (Upper Colorado HydroData)
- Location
- 40.2416, -105.8014 · Colorado
- Measures
- Reservoir water-surface elevation, feet above sea level
- Latest reading
- Oct 25, 12:00 AM local time (daily report)
- History
- 800 days on file since 2024-08-17
- Page built
- Oct 26, 2026 12:50 PM ET
Source: U.S. Bureau of Reclamation (Upper Colorado HydroData) (official page). Operator data is preliminary and may be revised. Weather: NOAA National Weather Service.