Hattie Lake
Hubbard County, Minnesota359 acresView mapDirections
Minnesota PCA publishes the water-quality measurements for Hattie Lake. Here is what has been measured.
- Mesotrophic
- 39 ft max depth
- Public access
Hattie Lake in Hubbard County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 12.5 ft visibility. Phosphorus: 17.5 µg/L. Chlorophyll-a (algae): 6.2 µg/L. Maximum depth: 39 ft. Surface area: 359.38 acres.
Minnesota DNR's Standard Survey on July 31, 2023 caught 1.00 walleye per gill net at Hattie Lake. DNR survey details →
Hattie Lake is a 359-acre mesotrophic lake in Hubbard County, Minnesota with a maximum depth of 39 feet. Overall water quality is declining over recent sampling years. The lake supports 15 documented fish species including black bullhead, black crappie, and bluegill. Public access is available with 1 public boat landing. Compared to the 67 other monitored lakes in Hubbard County, Hattie Lake ranks #35 for water quality.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-09-16. Methodology: how these readings are compared.
Hattie Lake covers about 360 acres in Hubbard County. It has one public boat landing. If you are planning to stay, you can search lake houses and cabins around Hattie Lake on Vrbo, or look for a hotel room near the lake on Booking.com or Expedia.
What Hattie Lake is good for
From access and monitoring records, not editorial picks.
- Clear water12.5 ft of visibility
- Boat launch1 documented ramp
- Fishing15 species recorded
- Deep water39 ft surveyed max depth
Swimming conditions
Readings onlyLow algae
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. Check local advisories before you swim.
Whether Hattie Lake is safe to swim in today is a call for the Minnesota Pollution Control Agency and the Minnesota DNR and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Hattie Lake
These are the measurements Minnesota PCA publishes for Hattie Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Good clarity, visible to about 12.5 ft. Phosphorus 17.5 µg/L. Chlorophyll-a 6.2 µg/L. TSI 45.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 12.5ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 17.5µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 6.2µg/L | Good GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 45 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Hattie Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Hattie Lake typically sits around 67°F at the surface in September. Summer average is about 68°F. Usually warmest in Jul (about 71°F) and coldest in May (about 59°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (59°F) to its warmest (71°F).
Typical surface water temperature by month, from 92 field readings (2024–2025) via the EPA Water Quality Portal. See the full Hattie Lake water temperature breakdown →
Minnesota DNR's Standard Survey on July 31, 2023 caught 1.00 walleye per gill net at Hattie Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Hattie Lake’s water-quality measurements separately, and the water-quality trend over 2 years of monitoring is declining. Catch rate is not a swim clearance and is not a weekly bite report.
DNR Fisheries Survey Summary
8 surveys on file from MN DNR Fisheries. Most recent: 2023-07-31 (Standard Survey).
8 surveys on file · most recent 2023-07-31 (Standard Survey)
| Species | Catch rate (CPUE) | Size | Avg weight |
|---|---|---|---|
| Yellow Bullhead | 22.37 | 4–12 in 2023-07-31 | 0.39 lb |
| Bluegill | 16.95 | 2–7 in 2023-07-31 | 0.16 lb |
| Yellow Perch | 8.51 | 5–9 in 2023-07-31 | 0.2 lb |
| Northern Pike | 4.51 | 9–31 in 2023-07-31 | 1.36 lb |
| Pumpkinseed | 4.49 | 3–7 in 2023-07-31 | 0.18 lb |
CPUE = catch per unit effort, fish caught per net per set in a standardised survey. It measures abundance, not size, and is not a weekly bite report.
Length Distributions
Number of fish caught at each inch class in the most recent survey that recorded lengths. Red dashed line marks an approximate trophy threshold for that species.
Yellow Bullhead
Bluegill
Yellow Perch
Northern Pike
From the 2023-07-31 survey
Hattie Lake is located five miles northwest of the town of Lake George in northern Hubbard County. Hattie has a surface area of 359 acres and a maximum depth of 39 feet. There is a state-owned public access located on the east shore of the lake. Anglers will find good populations of Largemouth Bass, Bluegill, Northern…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Hattie Lake. 4 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — HattieFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Hattie (1267)Aquatic Plant Report · MN DNR LakeFinder
- —Fish Stocking History — HattieFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — HattiePublic Water Access Sites · MN DNR LakeFinder
Lake Details
Max depth
39 ft
Surface area
359 acres
Shoreline
4.7 mi
Littoral zone
21%
Share shallower than 15 ft
Public access
Yes
Listed by Minnesota PCA
Lake Size & Watershed
Watershed (drainage) area
10 sq mi
HydroLAKES / HydroSHEDS
Elevation
1,404 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Hattie LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Hattie Lake
Compare lakeside cabins, hotels, and vacation rentals near Hattie Lake in Hubbard 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.
Top-rated places to stay near Hattie Lake
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Fish Species
Click a species to see every lake where it is documented.
Fishing Hattie Lake
Water quality readings over time
2 seasons of samples on record (2024–2025). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Worsening2 years
Phosphorus
Improving-1.5 µg/L/yr2 years
Chlorophyll-a
Worsening+0.7 µg/L/yr2 years
Nearby Lakes in Hubbard County
Frequently asked questions about Hattie Lake
Where is Hattie Lake?
- Hattie Lake is a lake in Hubbard County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Hattie Lake?
- Hattie Lake in Hubbard County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 12.5 ft visibility. Phosphorus: 17.5 µg/L. Chlorophyll-a (algae): 6.2 µg/L. Maximum depth: 39 ft. Surface area: 359.38 acres.
Is Hattie Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Hattie Lake?
- Hattie Lake typically sits around 67°F at the surface in September, from 92 EPA Water Quality Portal field readings (2024–2025). That is a typical value for the month, not a live reading.
How deep is Hattie Lake?
- Hattie Lake has a maximum depth of 39 feet. The lake covers 359.38 acres.
What fish are in Hattie Lake?
- Fish species found in Hattie Lake include black bullhead, black crappie, bluegill, brown bullhead, green sunfish, hybrid sunfish, largemouth bass, northern pike, northern pike (silver phase), pumpkinseed, rock bass, tullibee (cisco), walleye, yellow bullhead, yellow perch. Hattie Lake is located in Hubbard County, Minnesota.
What did the DNR fisheries survey find at Hattie Lake?
- Minnesota DNR's Standard Survey on July 31, 2023 caught 1.00 walleye per gill net at Hattie Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Hattie Lake’s water-quality measurements separately, and the water-quality trend over 2 years of monitoring is declining. Catch rate is not a swim clearance and is not a weekly bite report.
Are there boat ramps on Hattie Lake?
- Hattie Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Hattie Lake. Public access is listed as yes.
Can I fish at Hattie Lake?
- Hattie Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Minnesota's fish and wildlife agency, so check its current regulations before you go.
Explore Hattie Lake across LakeQuality
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Where this data comes from
112 measurements from 1 monitoring station, 2024–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA112 samples · 2024–2025
Analytical methods
- Field measurement/observation, generic method
- Phosphorus by Two Reagent Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
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
Lake size & watershed from HydroLAKES (HydroSHEDS)
Lake details from Minnesota DNR LakeFinder
Named boat-access points from the USGS National Boat Ramps inventory