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Q&AWater quality · Pennsylvania

Algae on Lake Wallenpaupack: 6 questions answered

The questions we hear most about Lake Wallenpaupack right now, answered with this week's numbers.

Lake Wallenpaupack
Lake Wallenpaupack. Photo: David notMD, CC BY-SA 4.0
Algaenot seenlatest clear view, yesterday
Water53°Fsurface, a few days ago

The latest clear view of Lake Wallenpaupack shows none of the algae seen before. That raises the same questions every time, so here are the answers, one by one, from the latest numbers.

How cold is Lake Wallenpaupack right now?

About 53°F at the surface on the latest clear reading (a few days ago). Shallow coves can run a few degrees off that on sunny afternoons.

4045505560°FOct 29Nov 1Nov 4Nov 753°F
Surface water temperature on Lake Wallenpaupack, °F. Each dot is a clear-day reading; cloudy days leave gaps.

Is it safe to swim in Lake Wallenpaupack?

We can't call any lake safe. The latest clear view showed no bloom, but blooms can return after warm, calm days. Stay out of water that looks green, scummy or like spilled paint, keep dogs out of it, and check your state's lake advisory page before a swim day.

What does a bloom look like?

Pea-soup green water, a film or scum on the surface, or streaks like spilled paint, often piled up along the downwind shore. Clear water nearby can look very different, because blooms drift with the wind.

Depth map of Lake Wallenpaupack: shoreline, depth shading and contour lines, with today's free fishing spot DamDeepest water 2 miles
204060Depth, ft Free spot todayPlace to stay
Lake Wallenpaupack lake bed. Darker blue is deeper water; contour lines every 20 ft. The star marks the free spot named in this report (point drop-off, 10 to 24 ft).

What's biting on Lake Wallenpaupack?

Largemouth bass on Lake Wallenpaupack are a fair bet. In the 50s bass still feed, but in shorter bursts, often on sunny afternoons when the shallows warm a little. Smallmouth bass here are hit or miss. Smallmouth handle cool water well; the 50s often bring some of the biggest fish of the year onto rocky points.

When is the best time to fish Lake Wallenpaupack this week?

Thursday rates good for the bite, best 3:00 pm to 3:45 pm. Dawn and dusk are the most reliable hours any day.

WedNov 11 57° 42°2–5mph SWFair
ThuNov 12 49° 34°8mph EGood
FriNov 13 41° 27°10mph NGood
SatNov 14 LaterGood
SunNov 15 LaterGood
MonNov 16 LaterGood
TueNov 17 LaterGood
The days ahead on Lake Wallenpaupack. Sky, high and low (°F), wind and gusts (mph, with the direction it blows from), and the bite rating from sunrise, sunset, the moon and the wind.

How deep is Lake Wallenpaupack?

Around 60 ft at its deepest; it covers about 5,800 acres at full pool.

Water quality

Numbers in this report are estimates to help you plan a day on the water, not official safety information. Conditions change: check Lake Wallenpaupack today before you go.

Lake Wallenpaupack every morning

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