Sandstone Flowage
Marinette County, Wisconsin · WBIC 531300
This lake has fishing rules that differ from the standard ones for its area. Check the official rules before you fish. Official regulations
Size
153 acres
Max depth
35 ft
DNR lake type
Complex, Riverine
Water clarity
9.5 ft
Moderate, measured Sep 2003
A river-like water type, with flow instead of a still basin. This describes the lake type in general, not this lake in particular.
Outline
Numbered dots are boat landings; tap one for directions. The list below has the same numbers. Drawn from the DNR's 24K hydrography (surveyed 1973), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
9.5 ft Secchi depthModerateOlder reading
Last measured Sep 2, 2003. 4 readings on record, 2003.
Only a few readings are on record.
Nothing has been measured in the last 5 years, so this may not match the lake today.
Secchi depth is how far down a white disk stays visible. A bigger number means clearer water. Clear means a Secchi depth of 10 feet or more, moderate 5 to 10 feet, low under 5 feet.
Wisconsin DNR water monitoring (volunteer and staff), via the Water Quality Portal; station SANDSTONE FLOWAGE - DEEP HOLE. Checked Oct 23, 2026.
Water temperature
A typical year Modeled estimate
- Ice goes outabout Apr 4 (Mar 26 to Apr 12)
- Surface reaches 48°Fabout Apr 20 (Apr 11 to Apr 28)
- Surface reaches 64°Fabout May 22 (May 14 to May 26)
- June surface72°F, usually 70 to 73°F
- July surface78°F, usually 76 to 79°F
- August surface74°F, usually 72 to 76°F
Forms a warm top layer around Apr 29, lasting about 155 days.
A computer model of this lake's typical weather and water, built from 15 years, 2005 to 2019. Ranges show the middle half of years. The model was not calibrated against measured temperatures for this lake. It is an estimate, not a measurement.
Modeled: U.S. Geological Survey lake temperature data release (doi:10.5066/P9CA6XP8).
Today at the lake
Forecast: National Weather Service (no endorsement implied). Sunrise, sunset and moon phase are calculated. The moon phase can be a day off.
Stocking history
- Walleyelast stocked 2024 (large fingerling and small fingerling); stocked in 9 years since 2010
Stocking shows what was added to the lake, not what is in it now.
Wisconsin DNR annual fish stocking summary. Checked Oct 23, 2026.
Boat landings
- 1Sandstone Flowage AccessBoat ramp · Gravel surface · Township
Directions
Wisconsin DNR public boat access sites. Checked Oct 23, 2026.
More lakes in Marinette County
- Devils Lake1.6 miles away
- Kirby Lake1.8 miles away
- Left Foot Lake3.7 miles away
- Retcof Lake4.5 miles away
- Mud Lake5.0 miles away
- Nelligan Lake5.8 miles away
Where this comes from
- Size, depth and lake typeWisconsin DNR lake classifications, checked Oct 23, 2026
- OutlineWisconsin DNR 24K hydrography, checked Oct 23, 2026
- Stocking historyWisconsin DNR annual fish stocking summary, checked Oct 23, 2026
- Regulations linkWisconsin DNR fishing regulations (linked, not restated), checked Oct 23, 2026
- Boat landingsWisconsin DNR public boat access sites, checked Oct 23, 2026
- Water clarityWisconsin DNR water monitoring, via the Water Quality Portal, checked Oct 23, 2026
- Typical-year temperatureU.S. Geological Survey lake temperature model (modeled estimate), checked Oct 23, 2026
- VHS statusWisconsin DNR VHS status by watershed, checked Oct 24, 2026
- Depth map linkWisconsin DNR lake maps list, checked Oct 24, 2026
See data sources for what each source covers, and about for how the numbers are matched to lakes.
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