Big Spunk Lake vs Grand Lake
Water quality, depth, fish species, and recreation comparison.
Big Spunk Lake reads lower on nutrients and algae than Grand Lake. Both are in Stearns County, Minnesota.
Both Big Spunk Lake and Grand Lake sit in Minnesota. A same-state comparison strips out the state-level water-quality regime as a variable: any differences in the readings here are about the lakes themselves, not the agencies sampling them. The readings are meaningfully apart: Big Spunk Lake carries clearly lower phosphorus and chlorophyll-a readings than Grand Lake. A spread that wide reflects real underlying differences, in watershed inputs, depth profiles, or monitoring rigor.
For a recreational visitor, the wider gap in the readings is decisive: Big Spunk Lake has the lower nutrient and algae numbers. For a researcher, the gap is the interesting part: what is different about the two watersheds, and which of those differences is mutable?
Big Spunk Lake
Good clarity, visible to about 10 ft.
Grand Lake
Moderate clarity, visible to about 8 ft.
Side-by-Side Metrics
| Metric | Big Spunk Lake | Grand Lake |
|---|---|---|
| Water Clarity | 10 ft Better | 8 ft |
| Phosphorus | 14 µg/L Better | 27 µg/L |
| Chlorophyll-a (Algae) | 3.7 µg/L Better | 8.5 µg/L |
| Maximum Depth | 38 ft Better | 34 ft |
| Surface Area | 415 acres | 651 acres |
| Public Access | Yes | Yes |
| Fish Species | 19 Better | 14 |
| Trophic State | mesotrophic | eutrophic |
A green ✓ marks the better value for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better). Surface area and trophic state carry no tick — a bigger lake is not a better lake.
Swap a lake
Compare Big Spunk Lake or Grand Lake against a different lake.
Verdict
Big Spunk Lake reads lower on nutrients and algae than Grand Lake. Water clarity: 10 ft vs 8 ft. For fishing diversity, Big Spunk Lake also leads with 19 species.
Stays via Stay22
Where to stay near Big Spunk Lake and Grand Lake
Compare cabins, hotels, and vacation rentals around Big Spunk Lake and Grand Lake. Both lakes are pinned on the map, so you can see which stays sit nearer the one you pick. Switch to Satellite to see how close each is to the water.
Top-rated places to stay near Big Spunk Lake and Grand Lake
Prices for Oct 9–11, 4 adults. Change dates on the map below.
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 trip to Big Spunk Lake and Grand Lake?
Get lake water-quality updates plus the best cabin & lodging deals near Big Spunk Lake and Grand Lake — straight to your inbox. No spam, unsubscribe anytime.
Source: EPA National Aquatic Resource Surveys, 2026.