The Multistate Aquatic Resources Information System (MARIS) is a six state cooperative pilot project to make accessible, via a common, internet-based application, selected fish population survey data from each of the cooperating states. MARIS states include Illinois, Iowa, Michigan, Minnesota, Ohio, and Wisconsin. These states have developed a statewide fisheries survey database containing information on relative or absolute abundance of fish species, morphometry, location, and water chemistry in selected lakes. Each state will maintain authority and responsibility for its own database, but will support internet access through a defined set of summary queries and reports.

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The MARIS project @ Iowa State University GIS Facility
NOTICE:
The MARIS project is a prototype.
Data included in the databases are real, but may not be complete.
Contact the appropriate state database contact before using this data.
Last updated: September 08, 2005