Petenwell Lake

WISCONSIN


Lake Level 923.46 FEET 11/14/2025 Full Pool: 0.0 History, Alerts, More... click here	Advertise with us

Petenwell Lake News

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What Will the Long July 4 Holiday Weekend Be Like on the Water for Boaters?

BoatUS News

Date: 6/30/2025

TowBoatUS predicts more than 2,500 requests for on-water assistance SPRINGFIELD, Va., June 30, 2025 – When NOAA, The Weather Channel and even the Farmer’s Almanac all agree this summer will be hotter than average, boaters know they will need to prepare for the heat. However, on America’s July 4…

Water Resources Outlook for September 2023

National Weather Service

Date: 9/21/2023

Southeast River Forecast Center Water Resources Outlook for September 2023 addressing flooding and drought issues across the southeast U.S…

Water Resources Outlook (March 2023)

Todd Hamill

Date: 3/20/2023

Water Resources Outlook for March…

Is Your Boat’s Long Winter Nap Going Well?

BoatUS News

Date: 1/1/2023

SPRINGFIELD, VA., Jan. 24, 2022 – Storms have hammered the U.S., and many recreational boats are sleeping away the winter under a layer of ice and snow. If you store your boat outside and haven’t checked up on her lately, Boat Owners Association of The United States (BoatUS) has five tips for a midwinter…

What Every Boater Wants for the Holidays: 24/7 On-Water Assistance from TowBoatUS

BoatUS News

Date: 11/14/2022

Gadgets may make good holiday gifts. However, for a boater, having 24/7 on-the-water help just a call away is much better. Like belonging to an auto club for recreational boat owners, a BoatUS Unlimited Towing Membership provides professional on-water towing services by the TowBoatUS fleet - the nation’s largest…

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UPCOMING EVENTS

11/27/2025 - Thanksgiving

12/21/2025 - The First Day of Winter (Winter Solstice)

12/25/2025 - Christmas

1/1/2026 - New Year's Day

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• Surface Area: 23,040 Acres

Lake Petenwell is a man-made lake in central Wisconsin, in Adams, Juneau, and Wood counties next to Castle Rock Lake. It covers over 23,000 acres and is 42 feet deep. Lake Petenwell is Wisconsin's second largest lake at 23,040 acres or approximately 36 square miles. It was created in 1948 by the Wisconsin River Power Company with the construction of a dam across the Wisconsin River near Necedah. It has a maximum depth of 42 feet and is used for skiing, sailing and fishing. Private lakefront property is very limited as most of the virgin shoreline is undeveloped forest. Wildlife includes wintering bald eagles. Game fish include walleye, northern pike, bass, panfish, and muskellunge.
The area around the lake has restaurants, a community theater, a golf course and two casinos.
Lake Petenwell has blue-green algae blooms in the summer, the toxicity of which is unknown. The algae, which exists naturally in most lakes, is magnified on Lake Petenwell as a result of industrial and agricultural sources upstream. The Wisconsin Department of Natural Resources has recommended that humans and pets not use the waterway for recreational use.

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