Waters · Lakes · CO · Mon, Aug 24

How's the bite at Grand Lake today? Picky — fish it after dark.

Work for it.

Built from solunar, pressure, level, wind. This water has no live gauge for every reading — see the sources below.

5/10
Picky

Today's bite windows

12 AM6 AMNoon6 PM11 PM
Minor
2:04 AM–3:04 AM
Moonset
Major
9:27 AM–11:27 AM
Moon underfoot
Minor
5:41 PM–6:41 PM
Moonrise
Major
9:51 PM–11:51 PM
Moon overhead

Sunrise 6:23 AM · sunset 7:47 PM · tomorrow's first major 10:15 AM–12:15 PM · windows on every water

Solunar · computed updated 7:17 AM

Conditions right now

Water level
8366.45ft
+0.02 ft in 24h
USBR Grand Lake reading for Aug 23
Pressure
30.56inHg
rising fast · +3.7 hPa/12h
NOAA KGNB updated 6:35 AM
Wind
0mph N
NOAA KGNB updated 6:35 AM
Moon
89% waxing
Solunar · computed updated 7:17 AM

What this means

Largemouth bass, Crappie, Catfish
This gauge reports level but no water temperature, so depth calls stay open. Read the windows and the pressure trend instead.

Grand Lake water level today

8366.45 ft up 0.02 ft in 24 hours

That sits 50% of the way up the band it has held over the last 9 days, between 8366.39 and 8366.51 ft. Over the week it is up0.01ft.

08-14 8366.39–8366.51 ft 08-23
USBR Grand Lake reading for Aug 23

The week ahead

Tue 6 Biting
Wed 6 Biting
Thu 7 Biting
Fri 7 Biting
Sat 6 Biting
Sun 6 Biting
Mon 6 Biting

Forecast days carry solunar and the wind outlook. Pressure and gauge movement land the morning of.

Before you go

A CO fishing license covers this water. The state agency sets the rules and is the one that counts.

Nearby waters today

Questions people ask about Grand Lake

Answered from the same readings as the rest of this page. Where we have no basis for an answer, there is no entry — spot-by-spot local knowledge is not something we can claim for Grand Lake.

Is it worth fishing Grand Lake today?
5 out of 10 — picky. Work for it. The strongest stretch is 9:27 AM–11:27 AM. That number is worked out fresh each morning from the solunar windows, the pressure trend, the water level.
What time should you fish Grand Lake?
Today's major windows run 9:27 AM–11:27 AM and 9:51 PM–11:51 PM, with minor windows at 2:04 AM–3:04 AM and 5:41 PM–6:41 PM. Sunrise is 6:23 AM and sunset 7:47 PM. A major landing on first or last light is the stretch worth setting an alarm for.
What is the water temperature at Grand Lake?
No gauge on Grand Lake measures water temperature. US reservoir gauges report height, not temperature — so rather than estimate it, this page leaves it out and leans on the windows and the pressure trend instead.
What is the water level at Grand Lake right now?
8366.45 ft, the reading for August 23 from the Grand Lake gauge run by the USBR, which publishes one value a day. Over 24 hours it is up 0.02 ft.
Can you eat the fish you catch in Grand Lake?
That is a health question, and it is answered officially rather than by us. Colorado Department of Public Health and Environment publishes the fish consumption advisory covering these waters, where a baseline mercury guidance covers every water, with added PFOS advisories at Barr Lake, Runyon Lake and Chatfield Reservoir. Read it before you keep a meal — we give no eating advice.

CDPHE fish consumption advisory

What size fish can you keep in Colorado?
It depends on the species, and several have slot limits rather than a simple minimum. Open to harvest today: trout, arctic char, grayling and mountain whitefish, kokanee salmon, walleye, saugeye and sauger, largemouth, smallmouth and spotted bass. Seasons here change mid-year by agency order, so the status is re-checked every morning.

Trout, Arctic char, grayling and mountain whitefish limits · Kokanee salmon limits · Walleye, saugeye and sauger limits · Largemouth, smallmouth and spotted bass limits · Check a length against the rules

Where these numbers come from

Colorado's largest natural lake, part of the Colorado-Big Thompson project; the Bureau of Reclamation reads it once a day. A different water from the Oklahoma reservoir of the same name that Wave 2 could not find a gauge for. No temperature sensor.

No one types these in by hand. If a source goes quiet, the page says so instead of showing you yesterday.