Ahnapee River
River in Wisconsin, United States
title: "Ahnapee River" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["rivers-of-wisconsin", "bodies-of-water-of-door-county,-wisconsin", "bodies-of-water-of-kewaunee-county,-wisconsin"] description: "River in Wisconsin, United States" topic_path: "general/rivers-of-wisconsin" source: "https://en.wikipedia.org/wiki/Ahnapee_River" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary River in Wisconsin, United States ::
::data[format=table title="Infobox river"]
| Field | Value |
|---|---|
| name | Ahnapee River |
| native_name | oj |
| image | Ahnapee River below Forestville Dam.jpg |
| image_caption | The Ahnapee River below the dam at Forestville |
| subdivision_type1 | Country |
| subdivision_name1 | United States |
| subdivision_type2 | State |
| subdivision_name2 | Wisconsin |
| subdivision_type3 | Region |
| subdivision_name3 | Door Peninsula |
| length_mi | 15 |
| source1 | Gardner Swamp |
| source1_location | Wisconsin |
| source1_coordinates | |
| mouth | Lake Michigan |
| mouth_location | Algoma, Wisconsin |
| mouth_coordinates | |
| tributaries_left | Silver Creek |
| :: |
| name = Ahnapee River | native_name =oj | name_other = | name_etymology = | image = Ahnapee River below Forestville Dam.jpg | image_caption = The Ahnapee River below the dam at Forestville | map = | map_size = | map_caption = | pushpin_map = | pushpin_map_size = | pushpin_map_caption= | subdivision_type1 = Country | subdivision_name1 = United States | subdivision_type2 = State | subdivision_name2 = Wisconsin | subdivision_type3 = Region | subdivision_name3 = Door Peninsula | subdivision_type4 = | subdivision_name4 = | subdivision_type5 = | subdivision_name5 = |length_mi=15 | width_min = | width_avg = | width_max = | depth_min = | depth_avg = | depth_max = | discharge1_location= | discharge1_min = | discharge1_avg = | discharge1_max = | source1 = Gardner Swamp | source1_location = Wisconsin | source1_coordinates= | source1_elevation = | mouth = Lake Michigan | mouth_location = Algoma, Wisconsin | mouth_coordinates = | mouth_elevation = | progression = | river_system = | basin_size = | tributaries_left = Silver Creek | tributaries_right = | custom_label = | custom_data = | extra = The Ahnapee River is a 14.7 mi river on the Door Peninsula in eastern Wisconsin in the United States. It rises in Door County, Wisconsin, and flows through Kewaunee County into Lake Michigan at the city of Algoma. Its name has been ascribed as coming from the Ojibwe word aanapii meaning "when?".
Course
The Ahnapee rises in southern Door County and flows generally southeastwardly into northeastern Kewaunee County, past the village of Forestville, where it is dammed. Downstream of Forestville the river becomes a freshwater estuary of Lake Michigan and is paralleled by a rail trail called the Ahnapee State Trail. It joins Lake Michigan at the city of Algoma. The length of the river from Forestville to Algoma has ten public access points.
Gallery
|File:Ahnapee River, cropped from ISS066-E-142306, February 7, 2022.jpg|The Ahnapee River on February 7, 2022, taken from the International Space Station. The source of the river (lower right) is at the southeast of Gardner Swamp. The millpond at Forestville (center) appears as a long white spot. The river flows southwest towards its mouth at Algoma (upper left). |File:Aerial view of southeastern Gardner, southwestern Nasewaupee, northeastern Brussels, and northwestern Forestville, all four towns in Door County, Wisconsin 2020.png|The source of the upper portion of the Ahnapee River upstream from where it crosses Wisconsin Highway 57, taken June 27, 2020 |File:Aerial view of Kolberg in the eastern town of Brussels and the upper Forestville Millpond in the western town of Forestville in Door County, Wisconsin 2020.png|The upper part of the Forestville Millpond, with the upper portion of the Ahnapee River flowing into it; taken June 27, 2020 |File:Cropped aerial view of the Forestville Millpond and the start of the lower Ahnapee River in Door County, Wisconsin 2020.png|The lower part of the Forestville Millpond and the start of the lower portion of the Ahnapee River; taken June 27, 2020 |File:Aerial view of part of the southern town of Forestville and part of the northern town of Ahnapee in Door and Kewaunee counties, Wisconsin, including part of the village of Forestville and Kodan 2020.png|The Ahnapee on June 27, 2020 as it crosses the Door–Kewaunee county line. |File:Algoma Wisconsin view from the river.jpg|The river in Algoma, from a postcard postmarked in 1960
References
References
- U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. [http://viewer.nationalmap.gov/viewer/ The National Map], accessed December 19, 2011
- "Ahnapee River". Wisconsin Department of Natural Resources.
- [https://arcg.is/1qbazH Interactive trail map showing the Ahnapee river ending in Algoma] (the Ice Age Trail joins the Ahnapee trail for several parts)
- [https://drive.google.com/file/d/1g5vmcPNt7Ne0kcHN40lLlCYaWTkBIAZC/view Ahnapee River Water Trail Plan] by the Bay-Lake Regional Planning Commission, June 2019, page 4 (electronic page 8)
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