Rezac Lake
Rezac Lake in Hyde County, South Dakota is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 181 acres.
- Area
- 181 acres
Next lake in Hyde County
Swipe left or right on this bar to open the next or previous lake.
Why Rezac Lake has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Rezac Lake, no water-quality sampling on record for this lake.
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by SD DANR and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Rezac Lake is a 181-acre lake in Hyde County, South Dakota.
Source: EPA Water Quality Portal sampling records, SD DANR, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Rezac Lake water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Rezac Lake
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Trophic State Index: undefined.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) |
Where to stay near Rezac Lake
Compare lakeside cabins, hotels, and vacation rentals near Rezac Lake in Hyde County, South Dakota — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Rezac Lake
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 181 acres |
No bathymetric survey has been published for Rezac Lake, so its depth is not documented here.
Fishing Rezac Lake
Nearby Lakes in Hyde County
Frequently asked questions about Rezac Lake
Where is Rezac Lake?
- Rezac Lake is a lake in Hyde County, South Dakota. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Rezac Lake?
- Rezac Lake in Hyde County, South Dakota is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 181 acres.
Is Rezac Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Rezac Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Explore Rezac Lake across LakeQuality
More South Dakota Lake Rankings
Other Lakes in South Dakota
Where this data comes from
Measurements for Rezac Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.