Magda Lake
Magda Lake in Hennepin County, Minnesota has a water quality grade of D (Nutrient-rich). Water clarity: 14.1 ft visibility. Phosphorus: 59 µg/L. Chlorophyll-a (algae): 12.7 µg/L.
- Clarity
- 14.1 ft
- Typical in August
- 73°F
- Type
- Eutrophic
- Trend
- ↓ Declining
- Public access
- Yes
- Ice-out
- Apr 6
- Open water
- 238 days
Grade D measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near Magda Lake →
Next lake in Hennepin County
Magda Lake is a productive, nutrient-rich eutrophic lake in Hennepin County, Minnesota. Water quality is graded D based on 2 sampling years through 2022. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 80 other monitored lakes in Hennepin County, Magda Lake ranks #51 for water quality.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2022-09-22. Grade methodology: LakeGrade methodology.
Watch Magda Lake water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Grade onlyLimited data
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum
Water Quality Grade: D (Nutrient-rich)
Good clarity, visible to about 14.1 ft. Phosphorus level: 59 µg/L. Chlorophyll-a: 12.7 µg/L. Trophic State Index: 52.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 14.1 ft | Not graded |
| Phosphorus | 59 µg/L | Poor |
| Chlorophyll-a (Algae) | 12.7 µg/L | Fair |
| Trophic State Index (TSI) | 52 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Magda Lake
Compare lakeside cabins, hotels, and vacation rentals near Magda Lake in Hennepin County, Minnesota — 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 grade measures nutrients and algae, not lodging — cabins and rentals around Magda Lake are listed below.
Top-rated places to stay near Magda Lake
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Minnesota’s top lakes →
Water Temperature
Magda Lake typically sits around 73°F at the surface in August. Summer average is about 74°F. Usually warmest in Jul (about 77°F) and coldest in May (about 63°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 58 field readings (2017–2022) via the EPA Water Quality Portal. See the full Magda Lake water temperature breakdown →
Recreation & Access
- Eagle LakePublic
Fishing Magda Lake
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
Water Quality Trend: ↓ Declining
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.191 m/yr | 6 |
| Phosphorus | ↑ Improving | -2.43 µg/L/yr | 5 |
| Chlorophyll-a | ↓ Declining | +2.21 µg/L/yr | 5 |
Ice Season
Historical ice data from Minnesota DNR (13 observations).
Estimated open water season: 238 days
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2012-03-18 (2012) | 2013-04-27 (2013) |
| Ice-In | 2008-11-18 (2008) | 2015-12-23 (2015) |
Most recent ice-out: 2019-04-10
EPA Impairment Status
Magda Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MN27-0065-00 · Official waterbody report
County Ranking
Ranked #51 of 81 lakes in Hennepin County
Nearby Lakes With Higher Grades
Magda Lake holds Grade D. 2 nearby lakes hold higher nutrient-and-algae grades — useful for a swim day, not a reason to skip lodging here.
Nearby Lakes in Hennepin County
Frequently asked questions about Magda Lake
What is the water quality grade for Magda Lake?
- Magda Lake in Hennepin County, Minnesota has a water quality grade of D (Nutrient-rich). Water clarity: 14.1 ft visibility. Phosphorus: 59 µg/L. Chlorophyll-a (algae): 12.7 µg/L.
Is Magda Lake safe to swim in?
- Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum. Magda Lake has a water quality grade of D (Nutrient-rich). Algae concentration (chlorophyll-a) is 12.7 µg/L. Always check local health department advisories before swimming.
What is the water temperature of Magda Lake?
- Magda Lake typically sits around 73°F at the surface in August, from 58 EPA Water Quality Portal field readings (2017–2022). That is a typical value for the month, not a live reading.
When does Magda Lake thaw?
- Magda Lake typically has ice-out around Apr 6. Ice typically forms around Nov 30. The open water season is approximately 238 days.
Are there boat ramps on Magda Lake?
- Magda Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Eagle Lake. Public access is listed as yes.
Explore Magda Lake across LakeGrade
Fish species and top-graded lakes across Minnesota
Fish species and best lakes in Hennepin County
Species activity outlook by water temperature and season
Where to stay at Minnesota's top lakes, each with its grade
Lakes in the Crow River Watershed, ranked by water quality
High nutrients, frequent algae, reduced clarity
Minnesota's cleanest and most-polluted lakes, ranked
More Minnesota Lake Rankings
State Parks Near Magda Lake
Other Grade D Lakes in Minnesota
Eutrophic Lakes in Minnesota
Where this data comes from
31 measurements from 1 monitoring station, 2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA31 samples · 2022
Analytical methods
- Field measurement/observation, generic method
- Phosphorus by Two Reagent Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
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
Named boat-access points from the USGS National Boat Ramps inventory
Ice data from Minnesota DNR Climate