Know the River Before You Fish It.
Water levels, dam generation, flow data, and what it all means for your time on the White River.
The White River
The White River is one of the most productive trout fisheries in the country — and one of the most dynamic. The cold, clear tailwater below Bull Shoals Dam creates world-class conditions for brown and rainbow trout year-round, but the river moves on its own schedule. Understanding how the water flows, when it rises, and what drives those changes will make your trip safer, more productive, and a lot less surprising.
This page is our effort to put everything you need in one place. Bookmark it. Check it before you leave the cabin. And if you're not sure what you're looking at, stop by the fly shop — we're happy to walk you through it.
Quick Links
Bull Shoals Dam (White River)
Bull Shoals Tailwater — Real-Time Graph & Tabular Data (USACE)
Bull Shoals Dam Generation Projections — Column 13 (SWPA, updated periodically)
Bull Shoals Dam Generation Recording: 870-431-5311
Norfork Dam (North Fork River)
Lake Levels, Stream Gauges & Water Quality
The White River is one of the largest trout habitats in the country. It’s incredibly diverse. With 8 generators creating dozens of different flow scenarios throughout nearly 100 miles of trout water — it truly offers something for every angler. Whether it’s your first time chasing trout or you are a seasoned angler, the White River has something for you.
Matt Millner, Rising River Guides
White River Conditions
Everything you need before you wade in. Real-time water levels, CFS flow rates, and a local forecast — updated continuously so you can plan your drift, not guess at it.
White River Conditions tells you what the river is doing right now and what to expect:
Live CFS and flow rate at multiple gauge points along the White River
Current and forecasted water levels, including scheduled turbine releases
7-day local weather forecast for the Cotter area
Real-time fly recommendations based on current depth, flow, season, and time of day
Local guide tips updated as conditions change
Understanding the White River — What the Data Actually Means
The data above is only useful if you know how to read it. Here's a plain-language breakdown of what drives water levels on the White River, why it matters for fishing, and how to use these tools before and during your trip.
How Much Does the River Actually Change?
The White River is a tailwater fishery, which means it's fed by controlled releases from Bull Shoals Dam rather than rainfall alone. That makes it far more stable than an undammed river — but it still moves significantly.
At minimum flow, the river runs around 850 CFS (cubic feet per second). With all eight generators at Bull Shoals running at capacity, that number climbs to approximately 26,400 CFS. At our location in Cotter — roughly 18 miles below the dam — that range corresponds to about an 11-foot change in river level. For context, the Buffalo River has swung nearly three times that amount in a single event.
The further downstream you go — especially below where Crooked Creek and the Buffalo River join the White — the more dramatic the swings become, as those undammed tributaries add their own water on top of whatever the dam is releasing. At Ember Shoals, we're close enough to the dam that feeder creek contributions are minimal. But that also means water from the dam reaches us quickly.
How Fast Does Water Travel from the Dam?
Knowing when released water will arrive at your location is one of the most practical pieces of information for planning your day on the river. These are approximate travel speeds based on flow rate:
Up to 1 generator: 1.75 – 2.0 mph
1 to 2 generators: 2.25 – 2.5 mph
3 to 4 generators: 2.75 – 3.0 mph
5 to 6 generators: 3.25 – 3.5 mph
7 to 8 generators: 3.5 – 5.0+ mph
At roughly 18 miles from the dam, water from a high-generation release will reach Cotter in approximately 4 to 5 hours.
When the water falls: Take your distance from the dam in miles and divide by 2. That gives you the approximate time for about 85% of the water to fall out after the dam shuts off. At 18 miles, that's around 9 hours after shut-off before water drops back to a low, wadeable level.
These figures are observational estimates and should never be used to determine whether wading conditions are safe. Always err on the side of caution when water is rising.
Understanding the Bull Shoals Tailwater Graph
The real-time graph from the USACE gives you several layers of information:
Lake Level (Headwater): Bull Shoals Lake is divided into two relevant zones. The Conservation Pool sits below 628.5 feet above sea level — water is rarely released from this zone except in an emergency. The Power Pool runs from 628.5 to 659 feet, where the Southwestern Power Administration (SWPA) controls releases for hydroelectric generation. Above 659 feet is the Flood Pool, managed by the US Army Corps of Engineers for flood control.
The Corps operates on a standing mandate to keep Bull Shoals at a target level of approximately 659–662 feet, depending on the season. When the lake is above that target, the Corps works to bring it down. When it's at or below target, SWPA takes over and releases water primarily to generate power at peak demand times.
Power & Flow: Maximum output from all eight generators is 391 megawatt hours (MWH), producing up to 26,400 CFS of flow. To estimate how many generators are running from a flow reading: divide the CFS by 3,300. To estimate from a megawatt reading: divide by 48.88.
For example, 19,000 CFS ÷ 3,300 = approximately 5.8 generators, or 6 running below max capacity. This math won't be exact — generators are typically run between 50–100% of capacity depending on demand — but it gives you a reliable working estimate.
A note on the recorded generation line: If you call the Bull Shoals generation line (870-431-5311) and hear "no generators running," water can still be moving downstream via non-power releases through flood gates or sluice pipes. Don't rely solely on the phone recording.
Reading the Generation Projections
SWPA publishes projected generation schedules that can give you a short-term window into what the river is likely to do. Find Column 13 (Bull Shoals Dam) in the projection table — values are in megawatt hours, broken down by hour, starting at midnight.
Schedules are updated Monday through Thursday at approximately 5:00 PM for the following day, and on Friday at 5:00 PM for the upcoming Saturday, Sunday, and Monday. Keep in mind these projections are estimates and subject to change based on power demand, weather, and Corps requirements.
The most reliable way to use projections is to look for patterns. When daily generation cycles begin repeating themselves over several days, you have reasonable short-term predictability. If you're planning a trip, start watching these patterns one to two weeks in advance.
Three primary factors drive release decisions on the White River system:
1. Season. The Army Corps uses seasonal guidelines tied to crop protection downstream. The Newport Gauge — located roughly 100 miles downstream near Newport, Arkansas — acts as a critical reference point. Release targets at that gauge change throughout the year:
December 1 – April 14: Regulated to 21 feet at Newport
April 15 – May 7: Regulated to 14 feet (with exceptions if the four-lake system exceeds 50% capacity)
May 8 – November 30: Regulated to 12 feet (exceptions at 14 feet if four-lake system exceeds 70% flood storage)
2. Four-Lake System Capacity. Bull Shoals is one of four interconnected reservoirs on the White River system. When overall flood storage is high, the Corps may accept higher Newport Gauge levels — meaning more aggressive water releases from Bull Shoals.
3. Feeder Creek Levels. When Crooked Creek (near Yellville), the Buffalo River (near Norfork), or other tributaries rise after rainfall, the Corps will throttle back or shut off Bull Shoals releases to avoid flooding further downstream. Watch the stream gauges on those tributaries if rain is in the forecast — they're a reliable indicator that dam flow may drop suddenly.
When SWPA is in control (lake at or below target level), their primary motivation is revenue from power sales. They release water at peak electrical demand times — typically weekday mornings and afternoons — and often less on weekends. Extended low-water periods are no longer common thanks to the Minimum Flow Initiative implemented in 2009, which set a floor of approximately 700 CFS at the dam.
What Controls Water Releases — The Big Picture
Check the generation graph the night before your float or wade. Look for the trend — is water being released in the morning, afternoon, or not at all? If a pattern has been repeating for several days, there's a reasonable chance it continues.
If you're wading, keep a close eye on the water at your feet. Rising water can move quickly and is not always obvious from sound alone. Get to higher ground immediately at the first sign of a rise — don't wait to confirm it.
If you're in a boat, you have more flexibility, but high-generation releases on the White River can be powerful. Know your water and stay aware of conditions changing around you.
Not sure what the river is doing? Stop by the Ember Shoals fly shop before you head out. We follow these patterns closely and can give you a straight answer on what to expect.