Arbor Lake Max Depth
Poweshiek County, IowaView mapDirections
Iowa DNR publishes the water-quality measurements for Arbor Lake Max Depth. Here is what has been measured.
- Hypereutrophic
- Impaired · Algal growth
Arbor Lake Max Depth in Poweshiek County, Iowa has water-quality measurements published by Iowa DNR, shown here as reported. Water clarity: 1.3 ft visibility. Phosphorus: 107 µg/L. Chlorophyll-a (algae): 52.4 µg/L.
Free interactive depth-contour map of Arbor Lake Max Depth, reaching a maximum surveyed depth of 18 ft. Toggle Depth contours to overlay the bathymetric survey lines. Contour data from Iowa DNR.
Arbor Lake Max Depth is a highly nutrient-loaded hypereutrophic lake in Poweshiek County, Iowa. Phosphorus level is improving over recent sampling years. Compared to the 1 other monitored lakes in Poweshiek County, Arbor Lake Max Depth ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Iowa DNR, last sampled 2024-08-25. Methodology: how these readings are compared.
Swimming conditions
Readings onlyRecreation use not supported
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Arbor Lake Max Depth is listed impaired under Clean Water Act §303(d) (IR 4A) for algal growth, sediment / turbidity. Check local advisories before you swim.
Whether Arbor Lake Max Depth is safe to swim in today is a call for the Iowa Department of Natural Resources and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Arbor Lake Max Depth
These are the measurements Iowa DNR publishes for Arbor Lake Max Depth, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 1.3 ft of visibility. Phosphorus 107 µg/L. Chlorophyll-a 52.4 µg/L. TSI 71.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 1.3ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 107µg/L | Poor GoodFairPoor |
| Chlorophyll-a (algae) | 52.4µg/L | Poor GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 71 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
Ask about Arbor Lake Max Depth
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Arbor Lake Max Depth typically sits around 67°F at the surface in September. Summer average is about 77°F. Usually warmest in Jul (about 77°F) and coldest in Sep (about 67°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (67°F) to its warmest (77°F).
Typical surface water temperature by month, from 26 field readings (2010–2023) via the EPA Water Quality Portal. See the full Arbor Lake Max Depth water temperature breakdown →
Stays via Stay22
Stays near Arbor Lake Max Depth
Compare lakeside cabins, hotels, and vacation rentals near Arbor Lake Max Depth in Poweshiek 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. The water-quality readings cover nutrients and algae, not lodging. Cabins and rentals around Arbor Lake Max Depth are listed below.
Top-rated places to stay near Arbor Lake Max Depth
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Fishing Arbor Lake Max Depth
Water Quality Trend: Stable
Based on 4 years of monitoring (2021–2024).
Water clarity
Stable4 years
Phosphorus
Improving-4.9 µg/L/yr4 years
Chlorophyll-a
Worsening+5.9 µg/L/yr4 years
EPA Impairment Status
Arbor Lake Max Depth is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Recreation.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit IA 03-NSK-864 · Official waterbody report
Nearby Lakes in Poweshiek County
Frequently asked questions about Arbor Lake Max Depth
Where is Arbor Lake Max Depth?
- Arbor Lake Max Depth is a lake in Poweshiek County, Iowa. Its water-quality measurements are published by Iowa DNR and shown on this page as reported.
What is the water quality of Arbor Lake Max Depth?
- Arbor Lake Max Depth in Poweshiek County, Iowa has water-quality measurements published by Iowa DNR, shown here as reported. Water clarity: 1.3 ft visibility. Phosphorus: 107 µg/L. Chlorophyll-a (algae): 52.4 µg/L.
Is Arbor Lake Max Depth safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Arbor Lake Max Depth is listed impaired under Clean Water Act §303(d) (IR 4A) for algal growth, sediment / turbidity. Check local advisories before you swim.
What is the water temperature of Arbor Lake Max Depth?
- Arbor Lake Max Depth typically sits around 67°F at the surface in September, from 26 EPA Water Quality Portal field readings (2010–2023). That is a typical value for the month, not a live reading.
Explore Arbor Lake Max Depth across LakeQuality
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Other Lakes in Iowa
Hypereutrophic Lakes in Iowa
Where this data comes from
53 measurements from 1 monitoring station, 2021–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Iowa DNR Surface Water Monitoring Data
21IOWA_WQX53 samples · 2021–2024
Analytical methods
- Unknown
- Phosphorus by Colorimetry
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
- In-Vitro Determination of Chlorophyll
- ISU modification of APHA 2130-B
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database