Johnson Creek Reservoir
Johnson Creek Reservoir in Marion County, Texas is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 583 acres.
- Area
- 583 acres
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Why Johnson Creek Reservoir 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 Johnson Creek Reservoir, 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 TCEQ and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Johnson Creek Reservoir is a 583-acre lake in Marion County, Texas.
Source: EPA Water Quality Portal sampling records, TCEQ, last sampled recent years. Grade methodology: LakeQuality methodology.
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Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Johnson Creek Reservoir
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 Johnson Creek Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Johnson Creek Reservoir in Marion County, Texas — 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 Johnson Creek Reservoir
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 583 acres |
No bathymetric survey has been published for Johnson Creek Reservoir, so its depth is not documented here.
Fishing Johnson Creek Reservoir
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Frequently asked questions about Johnson Creek Reservoir
Where is Johnson Creek Reservoir?
- Johnson Creek Reservoir is a lake in Marion County, Texas. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Johnson Creek Reservoir?
- Johnson Creek Reservoir in Marion County, Texas is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 583 acres.
Is Johnson Creek Reservoir safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Johnson Creek Reservoir is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
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Where this data comes from
Measurements for Johnson Creek Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.