How to Read Lake Level and Dam Generation Schedules for Better Fishing

Most Alabama lakes are reservoirs, and someone decides every day how much water goes through each dam. That decision moves the lake up or down, turns current on and off below the dam, and changes where fish hold. Anglers who check the lake level and the generation schedule before a trip have a real advantage, and anglers who fish below dams need it for safety. This guide explains who runs which lakes in Alabama, where to find the numbers, what the terms mean, and how to turn them into fishing decisions.

Quick facts

• Alabama Power: Lakes on the Coosa, Tallapoosa and Black Warrior rivers, with levels and tentative generation schedules at apcshorelines.com and in the Shorelines app.
• U.S. Army Corps of Engineers, Mobile District: Locks and dams such as Bankhead, Holt, Oliver and Selden on the Black Warrior, and Walter F. George (Lake Eufaula). Hourly pool, tailwater and outflow data are at water.usace.army.mil.
• TVA: Tennessee River lakes in north Alabama, including Guntersville, Wheeler, Wilson and Pickwick, at tva.com/environment/lake-levels and in the TVA Lake Info app.
• USGS: River gauges with flow and height at waterdata.usgs.gov, plus free WaterAlert text or email alerts.
• Safety: Within 800 feet below a hydroelectric dam or lock and dam, everyone aboard must wear a life jacket (ALEA). Schedules can change without notice.
• Last checked: November 1, 2026.

Two kinds of lakes: storage and run-of-river

This is the most useful idea in the whole topic. Alabama Power explains it on every lake page (Alabama Power Shorelines):

• Run-of-river lakes release about as much water as flows in, so their level stays fairly constant all year. These are Lay, Mitchell and Jordan on the Coosa, Yates and Thurlow on the Tallapoosa, and Bankhead and Holt on the Black Warrior. (Bankhead and Holt are Corps of Engineers dams with Alabama Power generating plants.)
• Storage lakes have a higher summer pool and a lower winter pool. They’re drawn down in the fall and early winter to make room for winter and spring rain, then refilled in spring. These are Weiss, Neely Henry and Logan Martin on the Coosa, Harris and Martin on the Tallapoosa, and Smith on the Sipsey Fork of the Black Warrior.

Alabama Power’s published drawdown calendar (Alabama Power):

• Weiss, Neely Henry, Logan Martin and Harris start dropping on October 1 and finish by November 30.
• Martin can start dropping on September 1, depending on conditions, and finishes by November 30.
• Smith starts dropping on July 1 and finishes by November 30.
• In spring, the lakes refill to reach summer levels by May.

The target levels follow an “operating guide” (sometimes called a rule curve) set with the Federal Energy Regulatory Commission and the Corps. The guide is the highest level the lake is normally kept at on a given date. Drought, floods and other needs can push the actual level off the guide. Alabama Power notes that floods cause the biggest and fastest changes, and heavy rain can raise a lake several feet overnight.

Reading the numbers

Lake level (pool elevation)

Lake levels are given in feet above mean sea level, not depth. A reading of 498.5 at Smith doesn’t mean the lake is 498 feet deep. It means the surface is 498.5 feet above sea level. What matters is the difference from full pool or from the guide. Smith’s full pool is 510 feet. On November 1, 2026, Alabama Power showed 498.5, about 11.5 feet below full pool and still dropping toward winter pool.

Tailwater (lower pool)

The Corps’ Mobile District pages show both the pool above the dam and the “lower pool” (tailwater) below it. On the morning of November 1, 2026, Holt’s pool read about 186.6 feet and the tailwater about 123.2 feet, with zero outflow listed for most hours (USACE, Holt Lock and Dam). A rising tailwater reading usually means water is being released.

Outflow (cfs)

Outflow is the water passing the dam, in cubic feet per second (cfs). It includes water through the turbines and over or through the spillway gates. Zero or low outflow means slack water below the dam. High outflow means strong current.

Generators and spillway

Alabama Power’s lake pages show how many generators are running and the spillway flow, plus a tentative operating schedule for the next few days. For example, on November 1, 2026, Smith’s tentative schedule showed one generator from 6 p.m. to 9 p.m. on November 1, 2 and 3, and Holt’s showed one generator from 8 p.m. to 9 p.m. on the same days (Alabama Power, Holt). “Tentative” is the key word. These are plans, not promises.

TVA schedules

TVA’s lake pages show observed levels, predicted levels and release schedules. TVA says next-day release schedules are usually posted by 6 p.m., predicted levels are updated at least once a day by 1 p.m. Eastern, and schedules “can change without notice” because of weather or power-system needs (TVA, Guntersville).

Turning numbers into fishing decisions

These are widely used patterns, not guarantees. Every lake is different.

Below dams: current is the trigger

In tailwaters, generation creates current, and current pushes baitfish around and positions predators behind rocks, wing walls, points and eddies. Many anglers plan tailwater trips around the schedule so they’re on the water when current starts or stops. Our Black Warrior River bass below the dams guide goes into detail for Bankhead, Holt, Oliver and Selden.

On run-of-river lakes: watch flow, not level

On lakes like Holt, Bankhead, Lay and Jordan, the level barely changes, but generation upstream and downstream still pulls current through the lake. Points, channel bends and bridge pilings often fish better with some current.

On storage lakes in fall and winter: follow the drawdown

As a storage lake drops, shallow cover goes dry or gets too shallow, and fish move out to the next depth change: channel ledges, points, brush on drops and docks on deeper water. That’s why late-fall patterns on Weiss and Smith focus on ledges and deeper brush. See our guides to fall crappie on Weiss Lake and winter spotted bass on Smith Lake.

Rising water: new cover

When a lake rises fast after rain, or refills in spring, fish often move up into newly flooded cover. Heavy rain also muddies the water and can bring debris, so slow down and watch for logs.

Low water: a scouting opportunity

Winter pool exposes points, humps, stumps and old roadbeds. Mark them on your GPS or take photos. When the water comes back up, you’ll know exactly where that cover is.

Use a gauge for rivers

Many river stretches have USGS gauges that report water height and flow in near real time. With USGS WaterAlert, you can set a free text or email alert when a gauge goes above or below a level you choose (USGS WaterAlert). Alabama Power’s Shorelines app can also send alerts for lake levels and generator activity on specific lakes (Alabama Power).

Safety below dams

Fishing below dams is popular and productive, and it can be dangerous. Alabama Power’s lake pages list the hazards, including swirling water and strong underwater currents at powerhouse intakes, turbulent discharges from automatically operated turbines, strong and unpredictable currents below the dam, and rapidly rising water from turbine, spillway or lock discharges (Alabama Power, Holt).

• Wear your life jacket. Within 800 feet below a hydroelectric dam or lock and dam, Alabama law requires everyone aboard to wear one.
• Treat every schedule as tentative. Alabama Power, TVA and the Corps all warn that releases can change without notice. Turbines can start automatically.
• Obey restricted-zone signs and buoys, and stay out of lock approaches.
• Anchor carefully. An anchor that holds in slack water can pull a boat under when current starts. Many tailwater anglers drift or hold with the trolling motor instead.
• Bank anglers: Pick a spot with an easy way to higher ground. Water can rise quickly.
• Check before you leave home and again at the ramp.

A five-minute pre-trip routine

1. Find your lake’s operator: Alabama Power, the Corps or TVA.
2. Check the current level against full pool or the guide. Is the lake high, low, rising or falling?
3. Check the tentative generation or release schedule for your fishing window.
4. If you’re fishing a river, check the nearest USGS gauge for flow and trend.
5. Pick spots that match the conditions: current-facing structure when water is moving, and deeper edges when a storage lake is falling.

Lake level and generation are one input among several, along with water temperature, wind, clarity and fronts. But they’re free, updated often and the easiest data to get. For a weekly read on west and central Alabama conditions, see our Dixie Fishing Report, and for lakes close to town, our list of the best fishing lakes near Tuscaloosa.