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Satellite view of Grand Rapids Flowage

Grand Rapids Flowage

Reservoir

Cool water — ease in carefully

Use caution

Cool water — ease in carefully: water temperature is 69°F, cool enough to cause cold-water shock on a sudden entry.

  • Water temperature is 69°F, cool enough to cause cold-water shock on a sudden entry.
  • Heavy rain today can raise bacteria levels near outfalls and river mouths.

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Cool water — ease in carefully

Use caution

Cool water — ease in carefully: water temperature is 69°F, cool enough to cause cold-water shock on a sudden entry.

  • Water temperature is 69°F, cool enough to cause cold-water shock on a sudden entry. NOAA buoy MNMM4, as of Aug 22, 5:18 AM UTC
  • Heavy rain today can raise bacteria levels near outfalls and river mouths.
Water temp
69°F
20°C

No official beach-advisory feed for Wisconsin yet — follow posted signs and local guidance.

Live data from NOAA buoy MNMM4 (18.7 mi away), as of Aug 22, 5:18 AM UTC.

Weather at Grand Rapids Flowage

H: 76° L: 57°
Patchy rain nearby
Patchy rain nearby
64°
|
Feels like 66°
Precipitation
78%
Humidity
93%
Wind
5 mph
UV Index
0
Water Conditions:
🥶Too cold for most swimmers🌧️Rain expected
12 AM
Heavy rain at times
65°
3 AM
Patchy rain nearby
62°
6 AM
Patchy rain nearby
58°
9 AM
Light rain shower
61°
12 PM
Patchy rain nearby
71°
3 PM
Thundery outbreaks in nearby
76°
6 PM
Cloudy
70°
9 PM
Clear
65°

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Frequently asked questions

Where is Grand Rapids Flowage?
Grand Rapids Flowage is a reservoir in Wisconsin.
What is the water temperature at Grand Rapids Flowage?
As of August 22, 2026, the water temperature at Grand Rapids Flowage in Wisconsin is 69°F (20°C), measured by NOAA buoy MNMM4, 18.7 miles away.
Can you swim at Grand Rapids Flowage?
Cool water — ease in carefully: water temperature is 69°F, cool enough to cause cold-water shock on a sudden entry. Checked August 22, 2026.

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Best Times to Visit

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Right Now
Not ideal for outdoor activities today
🏞️ Lakes Tips:
  • Check for boat launch facilities and fees
  • Obtain required fishing licenses before arrival
  • Be aware of lake-specific regulations and restrictions
  • Monitor water quality reports before swimming
Best Seasons:
☀️ Summer (Jun-Aug)🍂 Fall (Sep-Nov)🌸 Spring (Mar-May)

Location & Contact

Wisconsin

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