Graber Pond
Graber Pond in Dane County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 231 µg/L.
- Public access
- Yes
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Why Graber Pond 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 Graber Pond, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded phosphorus, but not water clarity and algae (chlorophyll-a).
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 WI DNR and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Graber Pond is a lake in Dane County, Wisconsin. Limited fish-species data available. Public access is available with 2 public boat landings.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2024-07-25. Grade methodology: LakeQuality methodology.
Watch Graber Pond water quality
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Graber Pond
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Phosphorus level: 231 µg/L. Trophic State Index: 83.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 231 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 83 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay near Graber Pond
Compare lakeside cabins, hotels, and vacation rentals near Graber Pond in Dane County, Wisconsin — 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 Graber Pond
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Recreation & Access
- MiddletonPublic
- Mendota County ParkPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Graber Pond
EPA Impairment Status
Graber Pond is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit WI10001475 · Official waterbody report · Matched by proximity (2.18 km)
Regulated Pollution Sources Nearby
4 EPA-permitted facilities operate within about 5 miles of Graber Pond under Clean Water Act (NPDES) discharge permits. 2 facilities have a reported Clean Water Act violation in the past three years.
- Wagner Dairy FarmMiddleton · 2.6 mi away · NPDES WI0058751Recent violation
- Dons Mobile Manor WwtfSpringfield · 3.2 mi away · NPDES WI0062316Recent violation
- Springfield Clean Water LlcMiddleton, City Of · 2.5 mi away · NPDES WI0065889
- Ziegler Dairy FarmsSpringfield, Town Of · 2.7 mi away · NPDES WI0065188
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Graded lakes near Graber Pond
Graber Pond has no grade, but these lakes within a short drive do.
Nearby Lakes in Dane County
Frequently asked questions about Graber Pond
Where is Graber Pond?
- Graber Pond is a lake in Dane County, Wisconsin. LakeQuality has not rated this lake (UNRATED) — there is not enough recent sampling to assign a letter.
What is the water quality grade for Graber Pond?
- Graber Pond in Dane County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 231 µg/L.
Is Graber Pond safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Graber Pond 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 Graber Pond?
- Graber Pond has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Middleton, Mendota County Park. Public access is listed as yes.
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Where this data comes from
1 measurement from 1 monitoring station, 2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX1 sample · 2024
Analytical methods
- Phosphorus by Colorimetry
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Named boat-access points from the USGS National Boat Ramps inventory