Is There a Cleaner Lake Near Smith Lake?
Compared against 3 graded lakes within 30 miles, in Iowa.
Smith Lake holds Grade F (Algae-prone). Of the 3 lakes within 30 miles of it that carry a grade, none scores higher on nutrients and algae, so Smith Lake 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 |
|---|---|---|---|---|
| Smith Lake | Kossuth County | F | This lake | 2.4 ft |
| Five Island Lake | Palo Alto County | F | 21.2 mi | 1.6 ft |
| Crystal Lake Max Depth | Hancock County | F | 23.8 mi | 1.6 ft |
| Ingham Lake | Emmet County | F | 26.7 mi | 1.4 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 Smith Lake 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.