Question 1

What is the current water temperature at Johnson Reservoir?

Accepted Answer

The current water temperature at Johnson Reservoir is 77°F as of July 5, 1781. This temperature reading is based on our advanced satellite monitoring system and current data collection. Water temperature is a crucial factor for fishing success and water activities.

Question 2

How often is the Johnson Reservoir water temperature updated?

Accepted Answer

Water temperature data for Johnson Reservoir is updated daily through our satellite monitoring system. The last update was made on July 5, 1781. We use advanced thermal imaging and surface monitoring technology to provide accurate temperature readings.

Question 3

What activities are suitable for the current water temperature at Johnson Reservoir?

Accepted Answer

With the current water temperature of 77°F at Johnson Reservoir, conditions are perfect for swimming, water sports, and warm-water fishing. The temperature typically fluctuates 2-3 degrees throughout the day. This data is monitored via satellite and updated regularly to help you plan your lake activities.

Question 4

How good is the fishing at Johnson Reservoir with the current water temperature?

Accepted Answer

The current water temperature of 77°F at Johnson Reservoir is suitable for fishing, though fish activity may vary. For best results, fish during early morning or late evening hours when fish are most active. Always check local fishing regulations and licenses before fishing.

Question 5

What is Johnson Reservoir and what activities are available?

Accepted Answer

Johnson Reservoir is a small but charming body of water located in Franklin County, Idaho. Covering an area of 42 acres, it is a popular destination for anglers who come to fish for a variety of fish species that call the reservoir home. The lake is located in a peaceful and serene setting, surrounded by lush green vegetation, making it a perfect place to spend a relaxing day fishing.

Fishing enthusiasts can expect to reel in a variety of fish species, with some of the most popular catches being Bluegill, Largemouth Bass, Yellow Perch, and Rainbow Trout. These fish are known for their hard-fighting nature, making it a thrilling experience for anglers of all levels. Johnson Reservoir is also stocked with fish regularly, ensuring that there are always plenty of fish to catch throughout the year.

The clear waters of Johnson Reservoir make it an ideal spot for fly fishing enthusiasts who enjoy the art of casting and presenting their flies to fish. The reservoir's unique features, including its inlets, outlets, and varying depths, create a diverse range of fishing conditions, adding to the excitement and challenge of fishing here.

In addition to fishing, Johnson Reservoir is also a great spot for other recreational activities such as kayaking, canoeing, and paddleboarding. The calm waters of the reservoir make it an excellent place for these activities, and visitors can enjoy the tranquil beauty of the area while paddling around the lake.

Overall, Johnson Reservoir is a peaceful and scenic spot that offers a great fishing experience for anglers of all skill levels. Its small size and location in a rural area make it a hidden gem for those seeking a quiet and serene fishing destination.

Question 6

How big and deep is Johnson Reservoir?

Accepted Answer

Johnson Reservoir is a substantial body of water covering 42.00 acres (0.07 square miles) with a maximum depth of 3.65 meters (12 feet). This size and depth make it ideal for various activities including and water recreation.

Question 7

What are the current conditions at Johnson Reservoir?

Accepted Answer

Current conditions at Johnson Reservoir as of June 12, 2026:
      Water temperature is 77°F, 
      weather is Windy, 
      and water clarity is typical for the season. 
      These conditions are regularly updated to help you plan your visit.

Question 8

When is the best time to fish at Johnson Reservoir?

Accepted Answer

The best fishing times at Johnson Reservoir vary by season:
      Spring (March-May): Spring fishing at the lake is excellent for Rainbow trout, Brown trout, Brook trout, Cutthroat trout, Mountain whitefish. Focus on shallow areas warming up first, and use light tackle as fish become more active after winter.
      Summer (June-August): During summer months, fish are most active early morning and late evening. Look for Rainbow trout, Brown trout, Brook trout, Cutthroat trout, Mountain whitefish in deeper, cooler waters during mid-day.
      Fall (September-November): Fall brings excellent fishing opportunities as Rainbow trout, Brown trout, Brook trout, Cutthroat trout, Mountain whitefish feed heavily before winter. Focus on areas with falling water temperatures.
      Winter (December-February): Ice fishing is popular during winter months. Target Rainbow trout, Brown trout, Brook trout, Cutthroat trout, Mountain whitefish in shallower bays and near structure, always ensuring safe ice conditions.
      Additionally, early morning and late evening typically offer the best fishing conditions.

Question 9

What facilities and access points are available at Johnson Reservoir?

Accepted Answer

Johnson Reservoir offers the following facilities and amenities:

Please note that some facilities may have seasonal hours or closures. Check current conditions and regulations before your visit.

Question 10

Is ice fishing safe at Johnson Reservoir, and what's the current ice thickness?

Accepted Answer

The current ice thickness at Johnson Reservoir is 0-1 inches as of June 12, 2026. This winter season's average ice thickness is 1 inches based on 453 measurements. Ice thickness is currently stable by approximately 0.00 inches per day.

Safe ice thickness guidelines:
- 4 inches: Safe for walking and ice fishing
- 8-12 inches: Safe for snowmobiles and ATVs
- 12-15 inches: Safe for small vehicles
- 20+ inches: Safe for medium trucks

Current ice thickness is NOT safe for any activities.

Important safety notes:
- Ice thickness can vary across the lake
- Check conditions frequently as they change daily
- Bring proper safety equipment (ice picks, rope, flotation device)
- Never go on ice alone
- Verify conditions locally before venturing out

This data is based on our current ice monitoring system which tracks daily changes in ice thickness.

Question 11

What types of fish can I catch at Johnson Reservoir?

Accepted Answer

Johnson Reservoir is home to Rainbow trout, Brown trout, Brook trout, Cutthroat trout, Mountain whitefish. Each species has specific patterns and preferences that can help you plan your fishing trip effectively.

Question 12

What are the best techniques and times to catch Rainbow trout at Johnson Reservoir?

Accepted Answer

For Rainbow trout at Johnson Reservoir:
- Best seasons: Spring, Fall
- Active times: Morning, Late afternoon
- Preferred water temperature: 50-60°F
- Typical depth: 3-9 feet in spring, deeper in summer
- Habitat: Streams, Rivers, Lakes
- Spawning season: Spring

Recommended techniques:
- Fishing methods: Fly fishing, Spincasting
- Effective lures: Small spinners, Spoons, Fly patterns
- Natural bait options: Worms, Salmon eggs, Insects

Tackle recommendations:
- Rod: Ultralight to light power rod
- Reel: Spinning or fly reel
- Line: 2-6 lb test

Question 13

What are the best techniques and times to catch Brown trout at Johnson Reservoir?

Accepted Answer

For Brown trout at Johnson Reservoir:
- Best seasons: Spring, Fall
- Active times: Dawn, Dusk, Night
- Preferred water temperature: 50-65°F
- Typical depth: 2-10 feet in streams, deeper in lakes
- Habitat: Streams, Rivers, Lakes
- Spawning season: Fall

Recommended techniques:
- Fishing methods: Fly fishing, Spincasting, Trolling in lakes
- Effective lures: Streamers, Spoons, Spinners
- Natural bait options: Worms, Crickets, Grasshoppers

Tackle recommendations:
- Rod: Light to medium power rod
- Reel: Spinning or fly reel
- Line: 4-8 lb test

Question 14

What are the best techniques and times to catch Brook trout at Johnson Reservoir?

Accepted Answer

For Brook trout at Johnson Reservoir:
- Best seasons: Spring, Fall
- Active times: Morning, Late afternoon
- Preferred water temperature: 45-55°F
- Typical depth: Surface to 10 feet
- Habitat: Small streams, Springs, Lakes
- Spawning season: Fall

Recommended techniques:
- Fishing methods: Fly fishing, Spincasting
- Effective lures: Small spinners, Spoons, Fly patterns
- Natural bait options: Worms, Insects

Tackle recommendations:
- Rod: Ultralight to light power rod
- Reel: Spinning or fly reel
- Line: 2-6 lb test

Question 15

What are the best techniques and times to catch Cutthroat trout at Johnson Reservoir?

Accepted Answer

For Cutthroat trout at Johnson Reservoir:
- Best seasons: Spring, Fall
- Active times: Morning, Late afternoon
- Preferred water temperature: 45-60°F
- Typical depth: Surface to 10 feet
- Habitat: Streams, Rivers, Lakes
- Spawning season: Spring

Recommended techniques:
- Fishing methods: Fly fishing, Spincasting
- Effective lures: Small spinners, Spoons, Fly patterns
- Natural bait options: Worms, Insects

Tackle recommendations:
- Rod: Ultralight to light power rod
- Reel: Spinning or fly reel
- Line: 2-6 lb test

Question 16

What are the best techniques and times to catch Mountain whitefish at Johnson Reservoir?

Accepted Answer

For Mountain whitefish at Johnson Reservoir:
- Best seasons: Fall, Winter
- Active times: Morning, Afternoon
- Preferred water temperature: 50-60°F
- Typical depth: 5-25 feet
- Habitat: Rivers, Streams
- Spawning season: Fall

Recommended techniques:
- Fishing methods: Fly fishing, Casting
- Effective lures: Small spinners, Jigs
- Natural bait options: Flies, Worms

Tackle recommendations:
- Rod: Medium action rod
- Reel: Spinning reel
- Line: 4-8 lb test

Question 17

What are the best fishing seasons at Johnson Reservoir?

Accepted Answer

Spring: Best for catching Rainbow trout, Brown trout, Brook trout, Cutthroat trout

Fall: Best for catching Rainbow trout, Brown trout, Brook trout, Cutthroat trout, Mountain whitefish

Winter: Best for catching Mountain whitefish

Question 18

What water recreation activities are available at Johnson Reservoir?

Accepted Answer

Johnson Reservoir offers various recreational opportunities including:
      - Fishing

Additional lake information:
      - Lake size: 42.00 acres (0.07 square miles)
      - Maximum depth: 3.65 meters

The lake is particularly suitable for swimming and water sports 
      during current conditions. Always check weather forecasts and local regulations before activities.

Question 19

What's the best time to visit Johnson Reservoir, and how's the weather?

Accepted Answer

The best time to visit Johnson Reservoir depends on your planned activities:
      - Summer (June-August): Ideal for swimming, boating, and water sports
      - Spring/Fall: Excellent fishing and fewer crowds
      - Winter: Ice fishing when conditions permit
      Current weather is Windy. 
      Check our current updates for water temperature and conditions before your visit.

Question 20

What permits and regulations should I know about for Johnson Reservoir?

Accepted Answer

For Johnson Reservoir, you should be aware of:
      - Fishing license requirements (check state regulations)
      - Boat registration requirements

For specific requirements and current regulations:
      
      - Contact local authorities
      - Visit the DNR website
      - Visit official websites listed below

Question 21

Where can I find more information about Johnson Reservoir?

Accepted Answer

You can find detailed information about Johnson Reservoir through these official resources:
        
        - Additional Information
        
        These resources provide up-to-date information about:
        
        - Current lake conditions
        - Facility hours and availability
        - Special notices and alerts
        
        - Seasonal updates and events
        
        Official websites: https://idfg.idaho.gov/ifwis/fishingplanner/water/1118089421098

Question 22

What is the water temperature at Johnson Reservoir in January?

Accepted Answer

In January, the water temperature at Johnson Reservoir is approximately 43.20°F. 
        This information helps in planning activities like water activities.

Question 23

What is the water temperature at Johnson Reservoir in February?

Accepted Answer

In February, the water temperature at Johnson Reservoir is approximately 49.71°F. 
        This information helps in planning activities like water activities.

Question 24

What is the water temperature at Johnson Reservoir in March?

Accepted Answer

In March, the water temperature at Johnson Reservoir is approximately 55.29°F. 
        This information helps in planning activities like water activities.

Question 25

What is the water temperature at Johnson Reservoir in April?

Accepted Answer

In April, the water temperature at Johnson Reservoir is approximately 61.71°F. 
        This information helps in planning activities like water activities.

Question 26

What is the water temperature at Johnson Reservoir in May?

Accepted Answer

In May, the water temperature at Johnson Reservoir is approximately 64.00°F. 
        This information helps in planning activities like water activities.

Question 27

What is the water temperature at Johnson Reservoir in June?

Accepted Answer

In June, the water temperature at Johnson Reservoir is approximately 65.71°F. 
        This information helps in planning activities like water activities.

Question 28

What is the water temperature at Johnson Reservoir in July?

Accepted Answer

In July, the water temperature at Johnson Reservoir is approximately 77.57°F. 
        This information helps in planning activities like water activities.

Question 29

What is the water temperature at Johnson Reservoir in August?

Accepted Answer

In August, the water temperature at Johnson Reservoir is approximately 84.57°F. 
        This information helps in planning activities like water activities.

Question 30

What is the water temperature at Johnson Reservoir in September?

Accepted Answer

In September, the water temperature at Johnson Reservoir is approximately 76.86°F. 
        This information helps in planning activities like water activities.

Question 31

What is the water temperature at Johnson Reservoir in October?

Accepted Answer

In October, the water temperature at Johnson Reservoir is approximately 55.14°F. 
        This information helps in planning activities like water activities.

Question 32

What is the water temperature at Johnson Reservoir in November?

Accepted Answer

In November, the water temperature at Johnson Reservoir is approximately 44.00°F. 
        This information helps in planning activities like water activities.

Question 33

What is the water temperature at Johnson Reservoir in December?

Accepted Answer

In December, the water temperature at Johnson Reservoir is approximately 37.57°F. 
        This information helps in planning activities like water activities.

Question 34

What are the current fishing conditions at Johnson Reservoir?

Accepted Answer

Current water temperature at Johnson Reservoir is 77°F. 
        Check local fishing reports for the most active species.

Question 35

What is the maximum depth of Johnson Reservoir?

Accepted Answer

Johnson Reservoir has a maximum depth of 3.65 meters (12 feet). This depth provides excellent habitat for various fish species and supports diverse aquatic life. The lake's depth profile makes it suitable for both shallow-water fishing and deep-water activities.

Question 36

How big is Johnson Reservoir?

Accepted Answer

Johnson Reservoir covers an area of 42.00 acres (0.07 square miles) at full pool. The lake is currently holding 36.82 acres of water, which represents 87.7% of its total capacity. This substantial size makes it an important recreational resource for Franklin County, offering extensive opportunities for fishing, boating, and other water activities.

Question 37

Where is Johnson Reservoir located?

Accepted Answer

Johnson Reservoir is located in Preston, Franklin County, ID. The lake is accessible to the public and serves as a popular destination for outdoor activities. Its location in Franklin County makes it easily accessible from Preston and surrounding communities.

Question 38

What is the current water level at Johnson Reservoir?

Accepted Answer

Johnson Reservoir is currently holding 36.82 acres of water, compared to its full capacity of 42.00 acres. This represents 87.7% of its total capacity. Water levels are good for most recreational activities. These water levels are monitored regularly and impact various recreational activities on the lake.

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Johnson Reservoir

Johnson Reservoir

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Warm-water pattern for Rainbow trout / Brown trout

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Weather Forecast

Hourly Wind Forecast

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