Question 1

What is Donnley Reservoir and what activities are available?

Accepted Answer

Donnley Reservoir in Rosebud County, Montana spans about 41.5 acres and rests at an elevation of roughly 2,696.2 feet, offering a quiet prairie-water setting shaped by open space and rolling grassland. Its moderate size gives it a balanced feel&mdash;large enough to provide room for exploration yet small enough to maintain the calm, secluded atmosphere typical of eastern Montana&rsquo;s wide-open country.

The reservoir sits in a landscape defined by subtle rises, sagebrush patches, and long, unbroken views that shift in color throughout the day. Early mornings bring soft light across the water, while evenings often deliver deep prairie sunsets that reflect vividly off the reservoir&rsquo;s surface. The gently sloping shoreline makes the area easy to access, whether visitors are stopping for a peaceful break, watching local wildlife, or enjoying time near the water.

Donnley Reservoir&rsquo;s appeal lies in its simplicity and the natural quiet that surrounds it. With its elevated prairie setting and roomy yet tranquil basin, it offers an authentic slice of Rosebud County&rsquo;s rural character&mdash;an easygoing stop where the open sky and still water create a timeless Montana scene.

Question 2

How big and deep is Donnley Reservoir?

Accepted Answer

Donnley Reservoir is a substantial body of water covering 41.50 acres (0.06 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 Donnley Reservoir?

Accepted Answer

Current conditions at Donnley 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 Donnley Reservoir?

Accepted Answer

The best fishing times at Donnley 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 Donnley Reservoir?

Accepted Answer

Donnley 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 Donnley Reservoir?

Accepted Answer

Donnley Reservoir offers various recreational opportunities including:
      - Fishing

Additional lake information:
      - Lake size: 41.50 acres (0.06 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 Donnley Reservoir, and how's the weather?

Accepted Answer

The best time to visit Donnley 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 Donnley Reservoir?

Accepted Answer

For Donnley 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 Donnley Reservoir?

Accepted Answer

You can find detailed information about Donnley 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=40105

Question 10

What is the water temperature at Donnley Reservoir in January?

Accepted Answer

In January, the water temperature at Donnley 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 Donnley Reservoir in February?

Accepted Answer

In February, the water temperature at Donnley 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 Donnley Reservoir in March?

Accepted Answer

In March, the water temperature at Donnley 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 Donnley Reservoir in April?

Accepted Answer

In April, the water temperature at Donnley 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 Donnley Reservoir in May?

Accepted Answer

In May, the water temperature at Donnley 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 Donnley Reservoir in June?

Accepted Answer

In June, the water temperature at Donnley 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 Donnley Reservoir in July?

Accepted Answer

In July, the water temperature at Donnley 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 Donnley Reservoir in August?

Accepted Answer

In August, the water temperature at Donnley 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 Donnley Reservoir in September?

Accepted Answer

In September, the water temperature at Donnley 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 Donnley Reservoir in October?

Accepted Answer

In October, the water temperature at Donnley 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 Donnley Reservoir in November?

Accepted Answer

In November, the water temperature at Donnley 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 Donnley Reservoir in December?

Accepted Answer

In December, the water temperature at Donnley 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 Donnley Reservoir?

Accepted Answer

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

Question 23

What is the maximum depth of Donnley Reservoir?

Accepted Answer

Donnley 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 Donnley Reservoir?

Accepted Answer

Donnley Reservoir covers an area of 41.50 acres (0.06 square miles) at full pool.  This substantial size makes it an important recreational resource for Rosebud County, offering extensive opportunities for fishing, boating, and other water activities.

Question 25

Where is Donnley Reservoir located?

Accepted Answer

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

Metric	Wed24	Thu25	Fri26	Sat27	Sun28	Mon29	Tue30	Wed1	Thu2
Condition	Partly Cloudy	Rain	Drizzle	Rain	Rain	Drizzle	Clear	Mostly Clear	Clear
High / Low	75°/49°	74°/52°	80°/56°	75°/58°	72°/54°	71°/53°	80°/55°	80°/55°	85°/57°
Precip	0%	58%	56%	70%	57%	49%	50%	0%	0%
Wind	9 mphgust 15	14 mphgust 21	13 mphgust 19	8 mphgust 12	15 mphgust 19	21 mphgust 30	10 mphgust 23	9 mphgust 18	7 mphgust 13
Pressure	30.10" stable	29.89" falling	29.62" falling	29.47" falling	29.58" rising	29.68" rising	29.71" rising	29.83" rising	29.96" rising
UV Index	7	4	5	5	6	5	7	6	9
Sunrise	11:16 AM	11:16 AM	11:16 AM	11:17 AM	11:17 AM	11:18 AM	11:18 AM	11:19 AM	11:19 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	2/5waxing gibbous	2/5waxing gibbous	3/5waxing gibbous	2/5waxing gibbous	5/5FULL	4/5FULL	3/5FULL	3/5waning gibbous

Donnley Reservoir

Donnley Reservoir

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