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Photo: Castor river castor river by ARPwildlifebio (CC BY-SA 4.0) License

Castor River Shut-Ins

Park · Fredericktown, Missouri

Use caution — flow is well above normal for this date

Use caution

Use caution — flow is well above normal for this date: live streamflow is available but no water-temperature sensor is nearby.

  • Live streamflow is available but no water-temperature sensor is nearby.
  • Flow is above the 75th percentile for Aug 22 (median 6 ft³/s over 34 years); fast water is the top river-drowning risk.
Use cautionGreat conditions today
Editor's Notes
At the Castor River Shut-Ins, the river squeezes through a maze of pink granite boulders more than a billion years old, carving natural chutes, pools, and slides — one of the Missouri Ozarks' most beautiful natural water playgrounds.

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Use caution — flow is well above normal for this date

Use caution

Use caution — flow is well above normal for this date: live streamflow is available but no water-temperature sensor is nearby.

  • Live streamflow is available but no water-temperature sensor is nearby. USGS gauge 07035000, as of Aug 21, 10:00 PM gauge-local time
  • Flow is above the 75th percentile for Aug 22 (median 6 ft³/s over 34 years); fast water is the top river-drowning risk. USGS daily streamflow statistics, as of Aug 21, 10:00 PM gauge-local time
Streamflow
25 ft³/s
discharge
Gage height
1.37 ft
water level

Flow is high for this date — above the 75th percentile for Aug 22 (median 6 ft³/s over 34 years).

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

Live, provisional data from USGS gauge Little St. Francis River at Fredericktown, MO (9 mi away), as of Aug 21, 10:00 PM gauge-local time.

Weather at Castor River Shut-Ins

H: 90° L: 66°
Overcast
Overcast
76°
|
Feels like 82°
Precipitation
8%
Humidity
82%
Wind
3 mph
UV Index
0
Water Conditions:
🏊Perfect for swimming
12 AM
Clear
72°
3 AM
Mist
69°
6 AM
Clear
66°
9 AM
Sunny
74°
12 PM
Sunny
88°
3 PM
Sunny
90°
6 PM
Sunny
87°
9 PM
Clear
78°

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Frequently asked questions

Where is Castor River Shut-Ins?
Castor River Shut-Ins is a park in Fredericktown, Missouri.
Can you swim at Castor River Shut-Ins?
Use caution — flow is well above normal for this date: live streamflow is available but no water-temperature sensor is nearby. Checked August 21, 2026.
How is Castor River Shut-Ins rated?
Castor River Shut-Ins in Fredericktown, Missouri has an average visitor rating of 4.8 out of 5, based on 471 reviews.

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Best Times to Visit

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General Tips:
  • Weekday mornings (8–10 AM) are typically less crowded
  • Check the forecast 2–3 days ahead for best planning
  • Avoid holiday weekends for a quieter experience
Best Seasons:
☀️ Summer (Jun-Aug)🍂 Fall (Sep-Nov)🌸 Spring (Mar-May)

Location & Contact

Fredericktown, MO 63645

Fredericktown, Missouri 63645

Popular Times

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People Talk About

💬 water💬 rocks💬 swimming💬 hike💬 scenery💬 nature💬 area💬 trail💬 crowded💬 summer

Accessibility

Family & Children

👶 Good for kids👶 Kid-friendly hikes