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outlet of Portage Lake, Washtenaw County, Michigan, USA
outlet of Portage Lake (tributary of Huron River), immediately below the stone dam.
latitude: 42.415298
longitude: -83.907204
Precision of location: Gauged from chart or map
Site Named Here: By name of island, bay, strait, lake, river, or stream, etc., named in source publication
| Dugesia tigrina | Sep 22, 1940 | many asexual spotted specimens under stones. Water warm, current swift; bottom, stones and sand. |