Is There a Cleaner Lake Near Big Portage Lake?
Compared against 3 graded lakes nearby, in Wisconsin.
Big Portage Lake holds Grade B (Good). Of the 3 lakes neighbouring it that carry a grade, none scores higher on nutrients and algae, so Big Portage Lake is the cleanest graded water among its neighbours. Lakes nearby without enough recent sampling to earn a letter are not part of that comparison.
The graded lakes it was measured against
| Lake | County | Grade | Distance | Clarity |
|---|---|---|---|---|
| Big Portage Lake | Vilas County | B | This lake | 18.5 ft |
| Little Portage Lake | Vilas County | B | Nearby | 6.4 ft |
| Black Oak Lake | Vilas County | B | Nearby | 29 ft |
| Little Tamarack Flowage Lake | Vilas County | B | Nearby | 8.2 ft |
What the comparison covers
A grade on LakeQuality comes from EPA Water Quality Portal samples: phosphorus, nitrogen, chlorophyll-a and turbidity, measured against EPA National Lakes Assessment ecoregion classes. Secchi clarity is shown and is not scored. This page compares Big Portage Lake only with neighbouring lakes in Wisconsinthat carry a letter of their own. A nearby lake with too little recent sampling has no letter to compare, so it is absent from the table rather than ranked below. Where a driving distance is not published for a lake, the table says so instead of estimating one.