Seward County Lake Quality
Nebraska, 4 lakes, average grade F (Very Poor)
Seward County has 4 graded lakes — 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. The county average is F — the most-stressed bracket in our rubric. Most monitored lakes here show persistent nutrient loading and algal pressure.
Most of the county's monitored lakes are shallow — under 50 feet — which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Nla Lake (D) is the cleanest in the county.
Quick Answers for Seward County
Planning a trip? Check special fishing regulations for Nla Lake — or check the official Nebraska fishing regulations.
All Lakes in Seward County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Nla Lake | D | 2.7 ft | 89.1 µg/L |
| 2 | Meadowlark Lake | F | 1.8 ft | 235.5 µg/L |
| 3 | Seward City Park Pond | F | - | 812 µg/L |
Other Counties in Nebraska
See how Seward County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 34 states.
Where to stay near Seward County
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Source: EPA National Aquatic Resource Surveys, 2026.