Please contact the local fisheries management biologist for current information.
2025 surveys at Mormon Trail Lake show poor to fair size structure of most fish with the exception of redear, which are quality size. Most largemouth bass were between 11 and 14 inches, 6.5 to 7.5 inch bluegill were abundant, and redear were in the 7 to 9 inch range. Black Crappie did not appear to have a strong year class and only one individual was sampled. The Adair County Conservation Board stocks walleyes into Mormon Trail to provide diversity in the fishery. - Last updated on 02/23/2026.
In nearly all cases, Iowa fish are safe to eat. Cleaning and/or preparing the meal causes most of the problems regarding taste or color of fish. Like all living creatures, fish are susceptible to diseases, parasites, and other naturally occurring conditions in the water. If you suspect your fish is affected by any of these conditions, do not eat it. Consider eating smaller and younger fish which usually have lower levels of contaminants than larger ones. Most contaminants accumulate in larger, older fish. For additional information, check out our resources for eating and cooking Iowa caught fish.
To learn more about fish tissue monitoring, visit our Fish Tissue Monitoring page .
The summaries listed below are a partial listing provided for your benefit. Familiarize yourself with the complete Fishing Regulations here: Iowa DNR Fishing Regulations and Laws.