Iowa Lake Township is one of twelve townships in Emmet County, Iowa, USA.

As of the 2000 census, its population was 145.

[1] According to the United States Census Bureau, Iowa Lake Township covers an area of 28.66 square miles (74.24 square kilometers); of this, 28.08 square miles (72.74 square kilometers, 97.98 percent) is land and 0.58 square miles (1.5 square kilometers, 2.02 percent) is water.