Question 1

What is the current water temperature at Hetch Hetchy Reservoir?

Accepted Answer

The current water temperature at Hetch Hetchy Reservoir is 48°F as of Invalid date. This temperature reading is based on our advanced satellite monitoring system and real-time data collection. Water temperature is a crucial factor for fishing success and water activities.

Question 2

How often is the Hetch Hetchy Reservoir water temperature updated?

Accepted Answer

Water temperature data for Hetch Hetchy Reservoir is updated daily through our satellite monitoring system. The last update was made on Invalid date. We use advanced thermal imaging and surface monitoring technology to provide accurate, real-time temperature readings.

Question 3

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

Accepted Answer

With the current water temperature of 48°F at Hetch Hetchy Reservoir, conditions are best for cold-water fishing and limited water activities. 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 Hetch Hetchy Reservoir with the current water temperature?

Accepted Answer

The current water temperature of 48°F at Hetch Hetchy 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 Hetch Hetchy Reservoir and what activities are available?

Accepted Answer

Hetch Hetchy Reservoir is a beautiful 1,892-acre lake nestled in the heart of Tuolumne County, California. The lake is a popular destination for anglers seeking a peaceful and productive fishing experience, with a variety of fish species available to catch, including rainbow trout, brook trout, and brown trout.

Rainbow trout are the most commonly caught fish in Hetch Hetchy Reservoir, with a population of both wild and stocked fish. These fish are known for their strong fight and excellent taste, making them a popular target among anglers. Rainbow trout can be caught using a range of baits and lures, including worms, power bait, and small spinners.

Brook trout are another popular species in the lake, known for their beautiful markings and excellent taste. These fish can be caught using similar techniques as rainbow trout, and anglers can find them in the lake's cooler, deeper waters.

Brown trout are less common in Hetch Hetchy Reservoir, but they can still be caught by anglers using similar techniques as rainbow and brook trout. These fish are known for their large size and challenging fight, making them a sought-after catch among experienced anglers.

In addition to fishing, Hetch Hetchy Reservoir offers a range of outdoor recreational activities for visitors to enjoy. The lake is surrounded by stunning natural scenery, providing a beautiful backdrop for hiking, camping, and other outdoor activities.

The lake is also an important source of water for the San Francisco Bay Area, with a massive hydroelectric system providing power to the region. Visitors can learn more about the lake's history and importance by visiting the O'Shaughnessy Dam and the Hetch Hetchy Reservoir Overlook, both of which provide breathtaking views of the lake and surrounding wilderness.

Overall, Hetch Hetchy Reservoir is an excellent destination for anyone seeking a fun and memorable outdoor experience. The lake's abundance of fish species, range of outdoor recreational activities, and stunning natural scenery make it a popular destination for anglers and outdoor enthusiasts alike. Whether you're looking to catch a trophy-sized trout, explore the surrounding wilderness, or simply relax by the water, Hetch Hetchy Reservoir has something for everyone to enjoy.

Question 6

How big and deep is Hetch Hetchy Reservoir?

Accepted Answer

Hetch Hetchy Reservoir is a substantial body of water covering 1892.02 acres (2.96 square miles) with a maximum depth of 95.90 meters (315 feet). This size and depth make it ideal for various activities including and water recreation.

Question 7

What are the current conditions at Hetch Hetchy Reservoir?

Accepted Answer

Current conditions at Hetch Hetchy Reservoir as of May 1, 2025: 
      Water temperature is 48°F, 
      weather is MostlyClear, 
      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 Hetch Hetchy Reservoir?

Accepted Answer

The best fishing times at Hetch Hetchy Reservoir vary by season:
      Spring (March-May): Spring fishing at the lake is excellent for Rainbow trout, Brown trout. 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 in deeper, cooler waters during mid-day.
      Fall (September-November): Fall brings excellent fishing opportunities as Rainbow trout, Brown trout 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 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 Hetch Hetchy Reservoir?

Accepted Answer

Hetch Hetchy 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

What types of fish can I catch at Hetch Hetchy Reservoir?

Accepted Answer

Hetch Hetchy Reservoir is home to Rainbow trout, Brown trout. Each species has specific patterns and preferences that can help you plan your fishing trip effectively.

Question 11

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

Accepted Answer

For Rainbow trout at Hetch Hetchy 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 12

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

Accepted Answer

For Brown trout at Hetch Hetchy 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 13

What are the best fishing seasons at Hetch Hetchy Reservoir?

Accepted Answer

Spring: Best for catching Rainbow trout, Brown trout

Fall: Best for catching Rainbow trout, Brown trout

Question 14

What water recreation activities are available at Hetch Hetchy Reservoir?

Accepted Answer

Hetch Hetchy Reservoir offers various recreational opportunities including:
      - Fishing

Additional lake information:
      - Lake size: 1892.02 acres (2.96 square miles)
      - Maximum depth: 95.90 meters

The lake is particularly suitable for fishing and boating 
      during current conditions. Always check weather forecasts and local regulations before activities.

Question 15

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

Accepted Answer

The best time to visit Hetch Hetchy 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 MostlyClear. 
      Check our real-time updates for water temperature and conditions before your visit.

Question 16

What permits and regulations should I know about for Hetch Hetchy Reservoir?

Accepted Answer

For Hetch Hetchy 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 17

Where can I find more information about Hetch Hetchy Reservoir?

Accepted Answer

You can find detailed information about Hetch Hetchy 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://www.allyosemite.com/lakes_rivers_falls/hetch_hetchy_reservoir.php

Question 18

What is the water temperature at Hetch Hetchy Reservoir in January?

Accepted Answer

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

Question 19

What is the water temperature at Hetch Hetchy Reservoir in February?

Accepted Answer

In February, the water temperature at Hetch Hetchy Reservoir is approximately 43.00°F. 
        This information helps in planning activities like water activities.

Question 20

What is the water temperature at Hetch Hetchy Reservoir in March?

Accepted Answer

In March, the water temperature at Hetch Hetchy Reservoir is approximately 35.29°F. 
        This information helps in planning activities like water activities.

Question 21

What is the water temperature at Hetch Hetchy Reservoir in April?

Accepted Answer

In April, the water temperature at Hetch Hetchy Reservoir is approximately 50.43°F. 
        This information helps in planning activities like water activities.

Question 22

What is the water temperature at Hetch Hetchy Reservoir in May?

Accepted Answer

In May, the water temperature at Hetch Hetchy Reservoir is approximately 57.57°F. 
        This information helps in planning activities like water activities.

Question 23

What is the water temperature at Hetch Hetchy Reservoir in June?

Accepted Answer

In June, the water temperature at Hetch Hetchy Reservoir is approximately 62.57°F. 
        This information helps in planning activities like water activities.

Question 24

What is the water temperature at Hetch Hetchy Reservoir in July?

Accepted Answer

In July, the water temperature at Hetch Hetchy Reservoir is approximately 77.00°F. 
        This information helps in planning activities like water activities.

Question 25

What is the water temperature at Hetch Hetchy Reservoir in August?

Accepted Answer

In August, the water temperature at Hetch Hetchy Reservoir is approximately 74.14°F. 
        This information helps in planning activities like water activities.

Question 26

What is the water temperature at Hetch Hetchy Reservoir in September?

Accepted Answer

In September, the water temperature at Hetch Hetchy Reservoir is approximately 70.71°F. 
        This information helps in planning activities like water activities.

Question 27

What is the water temperature at Hetch Hetchy Reservoir in October?

Accepted Answer

In October, the water temperature at Hetch Hetchy Reservoir is approximately 66.00°F. 
        This information helps in planning activities like water activities.

Question 28

What is the water temperature at Hetch Hetchy Reservoir in November?

Accepted Answer

In November, the water temperature at Hetch Hetchy Reservoir is approximately 56.86°F. 
        This information helps in planning activities like water activities.

Question 29

What is the water temperature at Hetch Hetchy Reservoir in December?

Accepted Answer

In December, the water temperature at Hetch Hetchy Reservoir is approximately 50.71°F. 
        This information helps in planning activities like water activities.

Question 30

What are the current fishing conditions at Hetch Hetchy Reservoir?

Accepted Answer

Current water temperature at Hetch Hetchy Reservoir is 48°F. 
        Check local fishing reports for the most active species.

Question 31

What is the maximum depth of Hetch Hetchy Reservoir?

Accepted Answer

Hetch Hetchy Reservoir has a maximum depth of 95.90 meters (315 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 32

How big is Hetch Hetchy Reservoir?

Accepted Answer

Hetch Hetchy Reservoir covers an area of 1892.02 acres (2.96 square miles) at full pool. The lake is currently holding 1305.40 acres of water, which represents 69.0% of its total capacity. This substantial size makes it an important recreational resource for Tuolumne County, offering extensive opportunities for fishing, boating, and other water activities.

Question 33

Where is Hetch Hetchy Reservoir located?

Accepted Answer

Hetch Hetchy Reservoir is located in Yosemite National Park, Tuolumne County, CA. The lake is accessible to the public and serves as a popular destination for outdoor activities. Its location in Tuolumne County makes it easily accessible from Yosemite National Park and surrounding communities.

Question 34

What is the current water level at Hetch Hetchy Reservoir?

Accepted Answer

Hetch Hetchy Reservoir is currently holding 1305.40 acres of water, compared to its full capacity of 1892.02 acres. This represents 69.0% of its total capacity. Boaters should exercise caution and be aware of potential shallow areas. These water levels are monitored regularly and impact various recreational activities on the lake.

Hetch Hetchy Reservoir

Hetch Hetchy Reservoir

Current Conditions

Water Temperature

Current Snapshot

Forecast: Thursday, May 1

Hourly Insights

Temperature

Precipitation

Wind

Sun, Moon & UV

Solunar Fishing Forecast

Outlook for Thursday at Hetch Hetchy Reservoir

Lake Map Views

Try Premium Features

Lake Information

Common Fish Species

Rainbow trout

Brown trout

Nearby Lakes

Folsom Lake

Shaver Lake

Lake Berryessa

Lake Natoma

Water Temperature History

Temperature Trend: Last 12 Months

Key Observations (Last 12 Months)

Weather Forecast

Hourly Wind Forecast

Daily Pressure Forecast

Frequently Asked Questions About Hetch Hetchy Reservoir

What is the current water temperature at Hetch Hetchy Reservoir?

What is the size and depth of Hetch Hetchy Reservoir?

What county and state is Hetch Hetchy Reservoir in?

How often is the Hetch Hetchy Reservoir water temperature updated?