The lake bed in 3-D: deep basin, drop-offs and shoreline. Shape estimated, not for navigation. Spot 1 (point drop-off) is open for everyone; the other 2 come with LakeScope PRO. Full screen
Boulder Reservoir
Boulder County, Colorado · about 720 acres (1.1 sq mi)
57°F water, calm this morning.
About Boulder Reservoir
In Boulder County, Colorado, Boulder Reservoir covers about 720 acres.
From end to end it runs about 1.8 miles with roughly 6.3 miles of shoreline. The water sits about 5,180 ft above sea level. The nearest town, Niwot, is about 2.2 miles northeast.
- Size
- About 720 acres (1.1 sq mi)
- Shoreline
- About 6.3 miles
- End to end
- About 1.8 miles
- Elevation
- About 5,180 ft
- County
- Boulder County
The lake from above
Best fishing times
Friday Good
- 6:00 am – 8:15 amsunrise · wind 2 mph
- 3:15 pm – 4:30 pm bestsunset, moon overhead · wind 2 mph
Saturday Good
- 6:15 am – 8:30 amsunrise · wind 2 mph
- 3:15 pm – 5:15 pm bestsunset, moon overhead · wind 2 mph
Based on sun and moon times and the wind forecast. A guide, not a promise. The app shows the whole week.
Fish to expect
Lakes like Boulder Reservoir in Colorado usually hold trout, yellow perch and smallmouth bass. The state fish and wildlife agency lists what is stocked and the rules for this lake. With the surface at 57°F, the notes below say which of them should be biting.
- GoodTrout
Good range. Near the surface and along shorelines.
- GoodYellow perch
Schooled near weed edges and soft bottom.
- FairSmallmouth bass
Picking up. Look on rocky points and gravel.
From today's water temperature and the season. A guide, not a promise.
Fishing spots
- 1Point drop-off
The bottom falls away fast off this point; fish rest deep and move up the slope to feed.
- 2
- 3
2 more spots with LakeScope PRO: fish, depth band, water temperature, best time and bait for each.
Picked from the shape of the lake bed. A guide, not a promise.
Water temperature
At the surface, seen .
Water level
No daily level reading for this lake.
Ice
Open water
Ice thickness is an estimate from air temperature, not a measurement. Check the ice yourself before going on it.
Weather and wind
Sunrise 6:44 am · sunset 4:45 pm · waxing crescent moon (lake time).
Towns and places to stay near Boulder Reservoir
- Niwotabout 2.2 mi northeast
- Gunbarrelabout 2.4 mi southeast
- Boulderabout 4.4 mi southwest
- Longmontabout 7.7 mi northeast
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Questions about Boulder Reservoir
What fish are in Boulder Reservoir?
Lakes like Boulder Reservoir usually hold trout, yellow perch and smallmouth bass. Check the state fish and wildlife agency for stocking and limits.
How deep is Boulder Reservoir?
We have no published depth for this lake. The 3-D view gives an estimated shape of the bed: where the deep basin and the drop-offs are. Not for navigation.
How big is Boulder Reservoir?
About 720 acres, with about 6.3 miles of shoreline.
What town is near Boulder Reservoir?
Niwot is about 2.2 miles northeast; Gunbarrel is about 2.4 miles southeast.
What is the water temperature at Boulder Reservoir today?
The surface was about 57°F on the latest clear reading. The page updates every day.
Boulder Reservoir on your phone
The whole week of bite times, lake alerts and the 3-D view, every morning.
