Lake Mysteries
Bedrock
Knowledge
Biological Beasts
Oh boy,
Okoboji!
Surfs Up
100

At 1943 ft. deep, what is the deepest lake in North America?

A. Lake Superior

B. Lake Tahoe

C. Crater Lake

D. Lake Chelan

Crater Lake

100

This is the number one reason for the formation of lakes.

Glaciers.

100

This is the most common lake dwelling fish.

Common Bass.

100

These are the 3 primary Iowa Great Lakes. 

West Okoboji, East Okoboji, Spirit Lake.

100

This is the top speed of a recreational Jetski.

70mph.

200

This lake's high salt content allows swimmers to float but is extremely poisonous to eat.

Dead Sea

200

How many lakes are there in the mainland USA?

Approximately 125,000.

200

Which of these animals does not live in a lake?

A. Cottonmouth Snake

B. American Mink

C. Capybara

D. Box Turtle

Box Turtle.

200

Many lakes are fed by rivers, but Lake Okoboji is fed by these.

Springs

200

What ice-themed sport is not part of Lake Okoboji University's annual Winter Games?

A. Ice Fishing

B. Polar Plunge

C. Smoosh Racing

D.Human Dog Sled

Ice Fishing.

300

How many vessels, boats and ships, have been recorded missing on Lake Michigan?

6,000 recorded cases. 

Only 1,500 have been located.

300

When a lake fills with plant debris that lowers the water supply, it has become a ______?

Bog

300

This extremely common migrating bird relies heavily on lakes for rest and food.

Geese.

300

The Okoboji Bridge, the first bridge to span the straight between East and West Lake Okoboji was removed in what year?   

1929

300

This part of a sailboat's single sail is the most important for wind propulsion.

Top. 

The top of the sail is bird-wing shaped to even the pressure above and below the sail itself.

400

According to Loch Ness Cryptozoologists who study Nessie, what about Loch makes research difficult?

(two answers)

Dark grey water due to peat deposits in the surrounding soil.

Many underwater caves that feed into Loch Ness.

400

These are the names of the 5 Great Lakes.

Superior, Michigan, Huron, Eerie, and Ontario.

400

Crocodiles can inhabit both freshwater and saltwater, Alligators can only inhabit this type of water. 

Freshwater

400

Obojoki, a lake monster of indigenous and early settler legend, is said to reside in which of the 5 Great Iowa Lakes? 

East Okoboji.

400

Water Skiing was first performed using 2 wooden boards and a clothesline, in what year was did this event take place?

A. 1945

B. 1890

C. 1886

D. 1922

1922.

500

In the Friday the 13th film franchise, Jason Voorhees is a hermit who lives at and guards what lake?

Crystal Lake

500

This country is widely recognized as having the most lakes. 

Canada.

500

Frogs, toads, and salamanders are all examples of what class of animals. 

Amphibians.

500

The Dacotah Indians called East Okoboji Lake “Okoboozhy”. Meaning "Big Water" What was the original name of West Okoboji?

Minnetonka.

500

This is a water sport that uses an underwater wing to lift a surfboard or boat out of the water.

Hydrofoil.