1 lake in South Dakota

Filter by water quality, level stability, size, and region. Every lake carries a scored profile and, where a gauge exists, live readings.

State

Region

Water grade

Level stability

Minimum acres

Sort by

Water ABCD What do these grades mean?

Water quality grade

Water A

ExcellentClear, low-nutrient water. Typically oligotrophic with high clarity and little seasonal algae.

Water B

GoodHealthy water with moderate clarity. Some seasonal variation, no persistent problems.

Water C

FairProductive water — good fishing, reduced clarity. Algae possible in late summer.

Water D

PoorNutrient-rich or heavily drawn down. Swimmable conditions vary; check before you rely on them.

Computed from measured clarity, trophic state, and drawdown magnitude — not an opinion. See the formula.

Overall score, 1–10

8.0+

ExceptionalStrong on every axis we measure.

7.0–7.9

StrongClearly above average, usually with one standout axis.

6.0–6.9

SolidA good lake with a trade-off worth understanding.

5.0–5.9

MixedReal strengths and real compromises.

Under 5

CompromisedSomething material — volatility, water quality, or access.

Weighted: water 26% · recreation 22% · investment 20% · value 18% · access 14%.

1 lakes · page 1 of 1

South Dakota · 370,000 acres

205 ft deep · 10 ft clarity

5.6

Volatile 2,250 mi shore Reservoir

$340,000 median est. +7.6%

1 result

● high score ● mid ● lower

All 1 matching lakes plotted. Circle size reflects surface area; color reflects overall score. Click a lake to open its report.