Is There a Cleaner Lake Near Lake Cornelia?
Compared against 4 graded lakes within 30 miles, in Iowa.
Lake Cornelia holds Grade D (Nutrient-rich). Of the 4 lakes within 30 miles of it that carry a grade, none scores higher on nutrients and algae, so Lake Cornelia is the cleanest graded water in that radius. 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 |
|---|---|---|---|---|
| Lake Cornelia | Wright County | D | This lake | 2.5 ft |
| Eldred Sherwood Lake | Hancock County | F | 12.2 mi | 3 ft |
| Briggs Woods Lake | Hamilton County | F | 25.4 mi | 1.5 ft |
| Clear Lake | Cerro Gordo County | D | 26.6 mi | 2.1 ft |
| Clear Lake | Cerro Gordo County | D | 26.9 mi | 2.1 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 Lake Cornelia only with neighbouring lakes in Iowathat carry a letter of their own, within 30 miles. 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.