Briggs Marsh
Briggs Marsh in Newport County, Rhode Island is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 186 acres.
- Area
- 186 acres
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Why Briggs Marsh 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 Briggs Marsh, 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 your state environmental agency and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Briggs Marsh is a 186-acre lake in Newport County, Rhode Island.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Briggs Marsh water quality
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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 Briggs Marsh
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 Briggs Marsh
Compare lakeside cabins, hotels, and vacation rentals near Briggs Marsh in Newport County, Rhode Island — 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 Briggs Marsh
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 186 acres |
No bathymetric survey has been published for Briggs Marsh, so its depth is not documented here.
Fishing Briggs Marsh
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Frequently asked questions about Briggs Marsh
Where is Briggs Marsh?
- Briggs Marsh is a lake in Newport County, Rhode Island. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Briggs Marsh?
- Briggs Marsh in Newport County, Rhode Island is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 186 acres.
Is Briggs Marsh safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Briggs Marsh 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 Briggs Marsh come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.