
Potholes Reservoir
Potholes State Park is a popular recreational area located in Grant County, Washington. The park spans across 773 acres and features 6,000 feet of freshwater shoreline on O'Sullivan Reservoir, which is a prime destination for fishing, boating, and swimming. The reservoir is fed by water from the Columbia River and is often confused with the nearby Pothole Lakes, which are a series of smaller lakes located 30 to 45 minutes away from the park. The terrain of the park is mostly desert with freshwater marshes, providing visitors with a unique and picturesque landscape to explore. The freshwater marshes located within the park are home to a variety of flora and fauna, including cattails, bulrushes, and various species of waterfowl. Visitors can explore the marshes via the park's extensive network of hiking trails, which offer stunning views of the surrounding desert landscape and the nearby reservoir. The trails are suitable for hikers of all skill levels and are a popular destination for birdwatching and wildlife photography. O'Sullivan Reservoir, located within Potholes State Park, is a popular destination for anglers from across the region. The reservoir is home to a variety of fish species, including largemouth bass, smallmouth bass, rainbow trout, walleye, and catfish. The park features a boat launch and a fishing dock, making it easy for visitors to access the reservoir and enjoy a day out on the water. The park also offers a variety of rental options, including kayaks, canoes, and paddleboards. In addition to its natural beauty and recreational opportunities, Potholes State Park also offers a range of amenities for visitors. The park features a large campground with over 60 campsites, including both tent and RV sites. The campground is equipped with restrooms, showers, and picnic areas, making it a popular destination for families and groups looking to enjoy an outdoor getaway. The park also features a playground, a horseshoe pit, and a volleyball court, providing additional recreational opportunities for visitors of all ages. Overall, Potholes State Park is a must-visit destination for anyone looking to explore the natural beauty of Grant County, Washington. With its stunning desert landscape, freshwater marshes, and pristine reservoir, the park offers a unique and unforgettable outdoor experience for visitors of all ages and interests. Whether you're looking to fish, hike, or simply relax and soak up the scenery, Potholes State Park has something to offer everyone.
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Potholes Reservoir
Potholes State Park is a popular recreational area located in Grant County, Washington. The park spans across 773 acres and features 6,000 feet of freshwater shoreline on O'Sullivan Reservoir, which is a prime destination for fishing, boating, and swimming. The reservoir is fed by water from the Columbia River and is often confused with the nearby Pothole Lakes, which are a series of smaller lakes located 30 to 45 minutes away from the park. The terrain of the park is mostly desert with freshwater marshes, providing visitors with a unique and picturesque landscape to explore. The freshwater marshes located within the park are home to a variety of flora and fauna, including cattails, bulrushes, and various species of waterfowl. Visitors can explore the marshes via the park's extensive network of hiking trails, which offer stunning views of the surrounding desert landscape and the nearby reservoir. The trails are suitable for hikers of all skill levels and are a popular destination for birdwatching and wildlife photography. O'Sullivan Reservoir, located within Potholes State Park, is a popular destination for anglers from across the region. The reservoir is home to a variety of fish species, including largemouth bass, smallmouth bass, rainbow trout, walleye, and catfish. The park features a boat launch and a fishing dock, making it easy for visitors to access the reservoir and enjoy a day out on the water. The park also offers a variety of rental options, including kayaks, canoes, and paddleboards. In addition to its natural beauty and recreational opportunities, Potholes State Park also offers a range of amenities for visitors. The park features a large campground with over 60 campsites, including both tent and RV sites. The campground is equipped with restrooms, showers, and picnic areas, making it a popular destination for families and groups looking to enjoy an outdoor getaway. The park also features a playground, a horseshoe pit, and a volleyball court, providing additional recreational opportunities for visitors of all ages. Overall, Potholes State Park is a must-visit destination for anyone looking to explore the natural beauty of Grant County, Washington. With its stunning desert landscape, freshwater marshes, and pristine reservoir, the park offers a unique and unforgettable outdoor experience for visitors of all ages and interests. Whether you're looking to fish, hike, or simply relax and soak up the scenery, Potholes State Park has something to offer everyone.
Read more detailsCurrent Conditions
Water Temperature
Current water temperature for Potholes Reservoir is 52°F.
Current Snapshot
Forecast: Friday, May 2
Clear
Hourly Insights
Temperature
Precipitation
Wind
Sun, Moon & UV
Solunar Fishing Forecast
Todays action is rated a 2 (scale is 0 thru 5, 5 is the best)
1:30 AM - 4:00 AM
7:56 AM - 10:26 AM
4:01 PM - 5:31 PM
8:06 AM - 9:36 AM
Outlook for Friday at Potholes Reservoir
Expect temperatures ranging from 49°F to 82°F. Skies look mostly clear with little chance of precipitation. Winds will be averaging 5 mph, with potential gusts reaching up to 19 mph. The maximum UV index will be 8 (Very High), so plan sun protection accordingly. For anglers, today's fishing action is rated 2/5 (Todays action is rated a 2 (scale is 0 thru 5, 5 is the best)). Look for the best bite times during the major periods around 1:30 AM and 7:56 AM, or try the minor windows near 4:01 PM and 8:06 AM for potential early morning or evening action. Check back for the latest conditions and forecasts for Potholes Reservoir.
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Lake Information
Common Fish Species
Nearby Lakes
Water Temperature History
Trends for Potholes Reservoir
Current Temp
Latest recorded surface temperature.
Lowest in Period
32°F
On Jan 3
Coldest point in the Last 12 Months.
Average in Period
50°F
Typical temp during the Last 12 Months.
Temperature Trend: Last 12 Months
Surface temperature over the selected period.
Key Observations (Last 12 Months)
- Warmest avg: July (80°F).
- Coolest avg: January (34°F).
- Rapid warming often occurs: March → April (+15°F).
- Sharpest cooling trend: September → October (-16°F).
Weather Forecast
Wind speed and pressure trends
Hourly Wind Forecast
Wind Direction
315°
Pressure
1013 mb
Cloud Cover
0%
Visibility
20 miles
Daily Pressure Forecast


Frequently Asked Questions About Potholes Reservoir
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