On June 24, 2014, the Iowa Department of Natural Resources conducted a fish assessment in the Lower Bee Branch Creek. The stream segment contained 14 species of native fish and one non-native species which was the common carp.
All fish species found in the sample were common to Northeast Iowa in the downstream extent of Mississippi River tributary streams. Several species in the sample were considered game species and have significant recreational value including the following: bluegill, largemouth bass, northern pike, pumpkinseed, and yellow perch. Given the newness of the stream segment, the DNR considered the sample containing 14 native species a mark of success for the project.
They collected bluegill at a rate of 209 fish per hour, a moderately high capture rate for bluegill. This suggests that bluegill were present in the project area at a significant density, but most bluegill were less than 6 inches. They collected two predator species: largemouth bass and northern pike. The density of those species was low as suggested by an electrofishing capture rate of less than 25 fish per hour. Overall, the data showed that Lower Bee Branch provides modest fishing opportunities in the Dubuque Metro area.