Is There a Cleaner Lake Near Arrowhead Lake?
Compared against 5 graded lakes within 30 miles, in Iowa.
Arrowhead Lake holds Grade B (Good). Of the 5 lakes within 30 miles of it that carry a grade, none scores higher on nutrients and algae, so Arrowhead 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 |
|---|---|---|---|---|
| Arrowhead Lake | Sac County | B | This lake | 5.6 ft |
| Swan Lake Max Depth | Carroll County | F | 20.9 mi | 1.4 ft |
| Newell Pit Lake | Buena Vista County | B | 22.1 mi | 4.1 ft |
| Moorehead Lake | Ida County | D | 22.3 mi | 3.7 ft |
| Yellow Smoke Lake | Crawford County | D | 23.6 mi | 3 ft |
| Storm Lake Max Depth | Buena Vista County | B | 23.7 mi | 1.7 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 Arrowhead 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.