Common Sense Agricultural Wetlands Act of 1990

Common Sense Agricultural Wetlands Act of 1990 - Amends the Food Security Act of 1985 with regard to the wetland conservation program to: (1) authorize graduated penalties for program violations; (2) require the Secretary of Agriculture to establish a de minimis standard which shall consider the wetland's size, conservation, wildlife, and recreational value; and (3) exempt land from program requirements based upon a cost-benefit analysis, or because it has been traditionally devoted to crop production.

Amends the Federal Water Pollution Control Act to exempt from specified dredging and fill prohibitions wetland that has been traditionally devoted to crop production.

Amends the Consolidated Farm and Rural Development Act to require the Secretary to make every effort to: (1) sell Farmers Home Administration inventory land without placing any permanent conservation easements on it; or (2) sell such land easement-free before transferring it to a third party.