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Satellite view of Mill Valley Reservoir

Mill Valley Reservoir

Reservoir

Cool todaycamping-nearby

Interactive map not available

Current water conditions

Water temp
68°F
20°C
Cool water — ease in carefully. Cool enough to cause cold-water shock on a sudden entry. Get in gradually, let your breathing settle, and keep an eye on weaker swimmers.

Live data from NOAA buoy TIBC1 (6.2 mi away), as of Aug 21, 11:00 AM UTC. Conditions are for general information only and can change quickly — always judge the water in person and follow posted advisories before swimming.

Weather at Mill Valley Reservoir

H: 77° L: 55°
Clear
Clear
56°
|
Feels like 55°
Precipitation
12%
Humidity
89%
Wind
5 mph
UV Index
0
Water Conditions:
🥶Too cold for most swimmers
12 AM
Overcast
59°
3 AM
Overcast
57°
6 AM
Clear
55°
9 AM
Overcast
65°
12 PM
Sunny
69°
3 PM
Overcast
70°
6 PM
Sunny
69°
9 PM
Clear
58°

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Frequently asked questions

Where is Mill Valley Reservoir?
Mill Valley Reservoir is a reservoir in California.
What is the water temperature at Mill Valley Reservoir?
As of August 21, 2026, the water temperature at Mill Valley Reservoir in California is 68°F (20°C), measured by NOAA buoy TIBC1, 6.2 miles away.
Can you swim at Mill Valley Reservoir?
There is no fixed answer for Mill Valley Reservoir: whether it is safe to swim there on a given day depends on the water temperature, recent rainfall, and any advisories posted at Mill Valley Reservoir in California. Check current water conditions before you go, and follow posted signs and local guidance.
What amenities does Mill Valley Reservoir have?
Visitor-listed amenities at Mill Valley Reservoir include camping-nearby.

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Been here? A quick note helps the next visitor plan their day. Handy things to mention:

Water temperatureCrowds & parkingBest time to goSafety & access

Best Times to Visit

🧥
Right Now
Cool weather - dress warmly
🏞️ 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

California

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Amenities

Camping nearby