Big Wall Lake
Big Wall Lake in Wright County, Iowa is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 384 acres.
- Area
- 384 acres
- Public access
- Yes
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Why Big Wall 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 Big Wall 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 Iowa DNR and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Big Wall Lake is a 384-acre lake in Wright County, Iowa. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, Iowa DNR, 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 Big Wall 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 Big Wall Lake
Compare lakeside cabins, hotels, and vacation rentals near Big Wall Lake in Wright County, Iowa — 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 Big Wall Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 384 acres |
| Public Access | Yes |
No bathymetric survey has been published for Big Wall Lake, so its depth is not documented here.
Recreation & Access
- Big Wall Lake Wildlife AreaPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Big Wall Lake
Nearby Lakes in Wright County
Frequently asked questions about Big Wall Lake
Where is Big Wall Lake?
- Big Wall Lake is a lake in Wright County, Iowa. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Big Wall Lake?
- Big Wall Lake in Wright County, Iowa is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 384 acres.
Is Big Wall Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Big Wall Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Are there boat ramps on Big Wall Lake?
- Big Wall Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Big Wall Lake Wildlife Area. Public access is listed as yes.
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Where this data comes from
Measurements for Big Wall Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Named boat-access points from the USGS National Boat Ramps inventory