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LakeQuality
Late afternoon sun over Slim Lake, scattering a bright path across wind-textured water
F

Page County Lake Quality

Iowa, 1 lake, average grade F (Algae-prone)

Page County has 1 monitored lake — a thin enough sample that one or two stressed lakes can move the county average noticeably. Use the per-lake pages below for what actually matters. Every one of those lake carries an A–F grade, so the county-level summary covers the full set rather than a monitored subset. The county average is F — the most-stressed bracket in our rubric. Most monitored lakes here show persistent nutrient loading and algal pressure.

The county's lakes lean shallow, which makes the grades sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest lake on the books is Pierce Creek Lake (F); the most-stressed is Pierce Creek Lake (F).

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All Lakes in Page County

1 lake1 graded lake

#LakeGradeClarityPhosphorusAlgaeTrophicAccess
1FPierce Creek LakePageF2.2 ft170.5 µg/L39.1 µg/LNo recent samplesNot recorded

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See how Page County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all United States (49 states), Canada (Ontario, Québec, Nova Scotia, British Columbia and Newfoundland and Labrador), and 38 other country hubs..

Source: EPA National Aquatic Resource Surveys, 2026.