Sunday, November 16th, 2025
My Account

Breaking News for

Sportsmen Since 1968

Main Menu
Menu
Search
My Account
Sunday, November 16th, 2025

Breaking News for

Sportsmen Since 1968

Main Menu
Menu
Subscribe to Outdoor News

What is lake ice made out of? There’s more to it than you may realize

Midwinter testing by the Minnesota DNR found dissolved oxygen concentrations in most lakes were adequate for sustaining fish. The question is, will there be enough oxygen in shallow lakes going into March before ice-out for fish survival? This photo shows a winterkill in East Lake in Dakota County from a few years ago. (Photo courtesy of Steve McComas)

What is lake ice made out of? The easy answer is frozen water, but there’s more to it.
At the beginning of winter, the first ice is primary ice (skim ice). It’s thin, and ice crystals orient horizontally. Next up is secondary ice. These ice crystals form perpendicular (vertically) to primary ice, and the ice grows downward. The third type of ice is super-imposed ice.

digital devicesThis content is restricted to subscribers of OutdoorNews.com. If you are already an OutdoorNews.com subscriber, you can log in here. If you are not and would like to read this and all the other great content OutdoorNews.com has to offer, click here.

Share on Social

Facebook
Twitter
LinkedIn
Email

Hand-Picked For You

Related Articles

PLEASE READ

Accessing Your Full Subscription Just Got Easier. Introducing Single Sign On.

 We’ve simplified things. Now you only need one password to access all your Outdoor News digital content.

Here’s how it works:

  1. Click Continue below.
  2. You’ll be taken to the OutdoorNews.com sign-in screen.
  3. Don’t have an account yet? Create one—it’s quick!
  4. After signing in, click the E-Edition Login button again. When the pop-up appears, just click Continue.
  5. You’ll either:
    1. Land on the e-edition selection screen (you’re in!)
    2. Be sent to a help page if we didn’t detect a subscription.

If you hit the help page, follow the directions so you don’t miss out on any of our great content.

One login. Every edition. Easy.

Let’s get you reading!

Continue...

PLEASE READ

 We’ve simplified things. Now you only need one password to access all your Outdoor News digital content.

Here’s how it works:

• Click Continue below.

• You’ll be taken to the OutdoorNews.com sign-in screen.

• Don’t have an account yet? Create one—it’s quick!

• After signing in, click the E-Edition Login button again. When the pop-up appears, just click Continue. You’ll either:

  1. Land on the e-edition selection screen (you’re in!)
  2. Be sent to a help page if we didn’t detect a subscription.

If you hit the help page, follow the directions so you don’t miss out on any of our great content.

Continue...

GET THE OUTDOOR NEWS DELIVERED TO YOUR INBOX

Sign up for the Outdoor News Weekly Newsletter and get 6 months of FREE access to OutdoorNews.com – packed with hunting, fishing, and conservation news. No Catch.

This offer includes digital access only (not the printed edition)

Email Address(Required)
Password(Required)
Name
What outdoor activities interest you?(Required)

Help Shape the Future of OutdoorNews.com!

We know you love the outdoors—now we want to make OutdoorNews.com the ultimate destination for all things hunting, fishing, and conservation.

Take our brief 3 minute survey to share your thoughts, and help us build the best outdoor website on the planet. As a thank you, we’ll send you a special offer!

Together, we can make OutdoorNews.com even better.

Take the Survey

Introducing The Outdoor News Foundation

Donate Today

For a limited time, you can get full access to breaking news, all original Outdoor News stories and updates from the entire Great Lakes Region and beyond, the most up-to-date fishing & hunting reports, lake maps, photo & video galleries, the latest gear, wild game cooking tips and recipes, fishing & hunting tips from pros and experts, bonus web content and much, much more, all on your smartphone, tablet or desktop For just a buck per month!

Sign Up Now

Some restrictions apply. Not valid with other promotions. $1 per month for 6 months (you will be billed $6) and then your subscription will renew at standard subscription rates. For more information see Terms and Conditions. This offer only applies to OutdoorNews.com and not for any Outdoor News print subscriptions. Offer valid thru 3/31/23.

Already a subscriber to OutdoorNews.com? Click here to login.