Lambert Slough
Lambert Slough in Yamhill County, Oregon is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 117 acres.
- Area
- 117 acres
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Why Lambert Slough 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 Lambert Slough, 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 Oregon DEQ and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Lambert Slough is a 117-acre lake in Yamhill County, Oregon.
Source: EPA Water Quality Portal sampling records, Oregon DEQ, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Lambert Slough 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 Lambert Slough
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 Lambert Slough
Compare lakeside cabins, hotels, and vacation rentals near Lambert Slough in Yamhill County, Oregon — 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 Lambert Slough
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 117 acres |
No bathymetric survey has been published for Lambert Slough, so its depth is not documented here.
Fishing Lambert Slough
Nearby Lakes in Yamhill County
Frequently asked questions about Lambert Slough
Where is Lambert Slough?
- Lambert Slough is a lake in Yamhill County, Oregon. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Lambert Slough?
- Lambert Slough in Yamhill County, Oregon is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 117 acres.
Is Lambert Slough safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Lambert Slough is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Explore Lambert Slough across LakeQuality
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Where this data comes from
Measurements for Lambert Slough come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.