Question 1

What is McWilliams Reservoir and what activities are available?

Accepted Answer

McWilliams Reservoir in Garfield County, Montana spans about 76.5 acres and sits at an elevation of roughly 2,797.8 feet, offering a spacious and scenic prairie-lake environment. Its generous size gives it an open, expansive feel, with enough room for shoreline wandering, wildlife viewing, and enjoying the calm, reflective water that characterizes reservoirs across eastern Montana.

The surrounding terrain features rolling grasslands, patches of sage, and the sweeping horizons typical of the high plains. Sunlight plays beautifully across the reservoir throughout the day&mdash;mornings bring soft, glassy reflections, while evenings often produce vivid prairie sunsets that paint the water with warm color. Its accessible shoreline and naturally quiet atmosphere make it well-suited for peaceful visits, whether for fishing, photography, or simply taking in the vastness of the open landscape.

McWilliams Reservoir&rsquo;s combination of size, accessible prairie terrain, and serene setting captures the essence of Garfield County&rsquo;s rural character. It offers a calm and inviting retreat for anyone seeking the wide skies, open space, and unhurried beauty of Montana&rsquo;s eastern plains.

Question 2

How big and deep is McWilliams Reservoir?

Accepted Answer

McWilliams Reservoir is a substantial body of water covering 76.50 acres (0.12 square miles) with a maximum depth of 0.00 meters (0 feet). This size and depth make it ideal for various activities including and water recreation.

Question 3

What are the current conditions at McWilliams Reservoir?

Accepted Answer

Current conditions at McWilliams Reservoir as of June 24, 2026:
      Water temperature is ~°F, 
      weather is MostlyClear, 
      and water clarity is typical for the season. 
      These conditions are regularly updated to help you plan your visit.

Question 4

When is the best time to fish at McWilliams Reservoir?

Accepted Answer

The best fishing times at McWilliams Reservoir vary by season:
      Spring (March-May): Spring fishing at the lake is excellent for . 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  in deeper, cooler waters during mid-day.
      Fall (September-November): Fall brings excellent fishing opportunities as  feed heavily before winter. Focus on areas with falling water temperatures.
      Winter (December-February): Ice fishing is popular during winter months. Target  in shallower bays and near structure, always ensuring safe ice conditions.
      Additionally, early morning and late evening typically offer the best fishing conditions.

Question 5

What facilities and access points are available at McWilliams Reservoir?

Accepted Answer

McWilliams 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 6

What water recreation activities are available at McWilliams Reservoir?

Accepted Answer

McWilliams Reservoir offers various recreational opportunities including:
      - Fishing

Additional lake information:
      - Lake size: 76.50 acres (0.12 square miles)
      - Maximum depth: 0.00 meters

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

Question 7

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

Accepted Answer

The best time to visit McWilliams 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 current updates for water temperature and conditions before your visit.

Question 8

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

Accepted Answer

For McWilliams 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 9

Where can I find more information about McWilliams Reservoir?

Accepted Answer

You can find detailed information about McWilliams 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://myfwp.mt.gov/fishMT/waterbody/searchByID?waterBodyID=42166

Question 10

What is the water temperature at McWilliams Reservoir in January?

Accepted Answer

In January, the water temperature at McWilliams Reservoir is approximately Data not available for this month. 
        This information helps in planning activities like water activities.

Question 11

What is the water temperature at McWilliams Reservoir in February?

Accepted Answer

In February, the water temperature at McWilliams Reservoir is approximately Data not available for this month. 
        This information helps in planning activities like water activities.

Question 12

What is the water temperature at McWilliams Reservoir in March?

Accepted Answer

In March, the water temperature at McWilliams Reservoir is approximately Data not available for this month. 
        This information helps in planning activities like water activities.

Question 13

What is the water temperature at McWilliams Reservoir in April?

Accepted Answer

In April, the water temperature at McWilliams Reservoir is approximately Data not available for this month. 
        This information helps in planning activities like water activities.

Question 14

What is the water temperature at McWilliams Reservoir in May?

Accepted Answer

In May, the water temperature at McWilliams Reservoir is approximately Data not available for this month. 
        This information helps in planning activities like water activities.

Question 15

What is the water temperature at McWilliams Reservoir in June?

Accepted Answer

In June, the water temperature at McWilliams Reservoir is approximately Data not available for this month. 
        This information helps in planning activities like water activities.

Question 16

What is the water temperature at McWilliams Reservoir in July?

Accepted Answer

In July, the water temperature at McWilliams Reservoir is approximately Data not available for this month. 
        This information helps in planning activities like water activities.

Question 17

What is the water temperature at McWilliams Reservoir in August?

Accepted Answer

In August, the water temperature at McWilliams Reservoir is approximately Data not available for this month. 
        This information helps in planning activities like water activities.

Question 18

What is the water temperature at McWilliams Reservoir in September?

Accepted Answer

In September, the water temperature at McWilliams Reservoir is approximately Data not available for this month. 
        This information helps in planning activities like water activities.

Question 19

What is the water temperature at McWilliams Reservoir in October?

Accepted Answer

In October, the water temperature at McWilliams Reservoir is approximately Data not available for this month. 
        This information helps in planning activities like water activities.

Question 20

What is the water temperature at McWilliams Reservoir in November?

Accepted Answer

In November, the water temperature at McWilliams Reservoir is approximately Data not available for this month. 
        This information helps in planning activities like water activities.

Question 21

What is the water temperature at McWilliams Reservoir in December?

Accepted Answer

In December, the water temperature at McWilliams Reservoir is approximately Data not available for this month. 
        This information helps in planning activities like water activities.

Question 22

What are the current fishing conditions at McWilliams Reservoir?

Accepted Answer

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

Question 23

What is the maximum depth of McWilliams Reservoir?

Accepted Answer

McWilliams Reservoir has a maximum depth of 0.00 meters (0 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 24

How big is McWilliams Reservoir?

Accepted Answer

McWilliams Reservoir covers an area of 76.50 acres (0.12 square miles) at full pool.  This substantial size makes it an important recreational resource for Garfield County, offering extensive opportunities for fishing, boating, and other water activities.

Question 25

Where is McWilliams Reservoir located?

Accepted Answer

McWilliams Reservoir is located in Hillside, Garfield County, MT. The lake is accessible to the public and serves as a popular destination for outdoor activities. Its location in Garfield County makes it easily accessible from Hillside and surrounding communities.

Metric	Wed24	Thu25	Fri26	Sat27	Sun28	Mon29	Tue30	Wed1	Thu2
Condition	Partly Cloudy	Rain	Rain	Rain	Rain	Drizzle	Mostly Clear	Clear	Clear
High / Low	72°/48°	74°/51°	78°/55°	71°/58°	72°/54°	70°/52°	79°/54°	82°/56°	85°/60°
Precip	0%	40%	61%	69%	54%	47%	53%	0%	0%
Wind	7 mphgust 14	15 mphgust 20	15 mphgust 18	12 mphgust 15	13 mphgust 16	21 mphgust 31	13 mphgust 24	10 mphgust 17	11 mphgust 20
Pressure	30.11" stable	29.92" falling	29.65" falling	29.48" falling	29.57" rising	29.66" rising	29.74" rising	29.84" rising	29.93" rising
UV Index	6	4	5	5	5	6	8	8	8
Sunrise	11:11 AM	11:12 AM	11:12 AM	11:12 AM	11:13 AM	11:13 AM	11:14 AM	11:15 AM	11:15 AM
Sunset	3:04 AM	3:04 AM	3:04 AM	3:04 AM	3:04 AM	3:04 AM	3:04 AM	3:04 AM	3:03 AM
Bite Rating	3/5first quarter	3/5waxing gibbous	2/5waxing gibbous	3/5waxing gibbous	2/5waxing gibbous	5/5FULL	4/5FULL	3/5FULL	3/5waning gibbous

McWilliams Reservoir

McWilliams Reservoir

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