Using the most recent hydro data and navigable waterway attribute data, this polygon layer is calculated by a buffer of 1,000 feet of navigable lakes, ponds, or flowages and 300 feet of navigable waterways. This layer also incorporates FEMA flood zone areas. The source hydro layers and FEMA flood zones were updated in 2024. This layer was also updated by creating buffers of the hydro waterlines, dissolving those buffers, and using clips and appends to integrate FEMA flood zones and clip out water polygons. This dataset was automatically cataloged from the creator's Open Data Portal. In some cases, publication year and bounding coordinates shown here may be incorrect. Additional download formats may be available on the author's website. Please check the 'More details at' link for additional information.
Although this data is being distributed by the American Geographical Society Library at the University of Wisconsin-Milwaukee Libraries, no warranty expressed or implied is made by the University as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the University in the use of this data, or related materials.