Catfish Creek is a 21.2-mile-long (34.1 km)[1] tributary of the upper Mississippi River in Dubuque County, Iowa.

The authority's goal is to promote education on managing the system and fixing issues like the environment.

The Middle Fork rises west of Dubuque and flows under and then parallel to U.S. Route 20; the former Illinois Central Railroad, now the Chicago Central and Pacific Railroad has its mainline in it.

[3] The Catfish Creek's drainage basin covers about 9,300 acres of land.

After Julien Dubuque's death, the Meskwaki briefly retook the land but later had to give it up due to the Black Hawk Treaty.