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LakeQuality

Spur Lake

B
Grade B — Good
Good · #36 of 67 lakes in the county · 2 ft clear · Eutrophic · 113 acres · from C
Eutrophic

Spur Lake in Oneida County, Wisconsin has a water quality grade of B (Good). Water clarity: 2 ft visibility. Phosphorus: 23.3 µg/L. Maximum depth: 3 ft. Surface area: 113 acres.

Wisconsin DNR lists Panfish as common on Spur Lake. DNR survey details →

Clarity
2 ft
Typical in August
62°F
Max depth
3 ft
Area
113 acres
Type
Eutrophic
Trend
Declining
Public access
Yes

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Spur Lake is a 113-acre productive, nutrient-rich eutrophic lake in Oneida County, Wisconsin with a maximum depth of 3 feet. Water quality is graded B based on 1 sampling years through 2026. Overall water quality is declining over recent sampling years. The lake supports 2 documented fish species including Panfish and Northern Pike. Public access is available with 1 public boat landing. Compared to the 66 other monitored lakes in Oneida County, Spur Lake ranks #36 for water quality.

Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-06-18. Grade methodology: LakeQuality methodology.

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Swimming Safety

Grade only

Low algae

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.

Good for swimming, clear water with low algae levels

Compare the safest swimming lakes near Rhinelander

Get alerts for Spur Lake

Water Quality Grade: B (Good)

Very murky, less than 2 ft of visibility. Phosphorus level: 23.3 µg/L. Trophic State Index: 58.

MetricValueGrade
Water Clarity (Secchi Depth)2 ftNot graded
Phosphorus23.3 µg/LGood
Chlorophyll-a (Algae)No recent samples
Trophic State Index (TSI)58Eutrophic

High nutrients, frequent algae, reduced clarity

Where to stay near Spur Lake

Compare lakeside cabins, hotels, and vacation rentals near Spur Lake in Oneida 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 Spur 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 Wisconsin’s top lakes →

Water Temperature

Spur Lake typically sits around 62°F at the surface in August. Summer average is about 64°F. Usually warmest in Jul (about 66°F) and coldest in Aug (about 62°F). These are typical values by month — not a live reading.

Jan
Feb
Mar
Apr
May
Jun
63°
Jul
66°
Aug
62°
Sep
62°
Oct
Nov
Dec

Typical surface water temperature by month, from 15 field readings (20242025) via the EPA Water Quality Portal. See the full Spur Lake water temperature breakdown →

DNR fisheries survey

Wisconsin DNR lists Panfish as common on Spur Lake.

A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Spur Lake B from EPA Water Quality Portal chemistry, and the water-quality trend over 7 years of monitoring is declining. Catch rate is not a swim clearance and is not a weekly bite report.

WI DNR Lake Profile

Authoritative data from the Wisconsin DNR LakePages. Monitored by volunteers since 2019. 2 stations on file (most recent sample 2025).

DNR Assessment
Excellent · Shallow Headwater lake
Trophic State Index 43 (mesotrophic) · 5-year average

Fish Species (DNR-rated)

Panfish(Common)Northern Pike(Present)

Lake Details

CharacteristicValue
Maximum Depth3 ft
Surface Area113 acres
Public AccessYes

Lake Size & Watershed

Watershed (drainage) area
2 sq mi
Shoreline
1.7 mi
Elevation
1,634 ft

Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).

Recreation & Access

1
Boat Landings
Yes
Public Access
  • Margaret LakePublic

Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps

Fish Species

Click a species to see every graded lake where it is documented.

Fishing Spur 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.

Purple Loosestrife

Based on 7 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Declining-0.098 m/yr5
Phosphorus Declining+1.51 µg/L/yr7
See year-by-year chart →

County Ranking

Ranked #36 of 67 lakes in Oneida County

Nearby Lakes in Oneida County

Frequently asked questions about Spur Lake

Where is Spur Lake?

Spur Lake is a lake in Oneida County, Wisconsin. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.

What is the water quality grade for Spur Lake?

Spur Lake in Oneida County, Wisconsin has a water quality grade of B (Good). Water clarity: 2 ft visibility. Phosphorus: 23.3 µg/L. Maximum depth: 3 ft. Surface area: 113 acres.

Is Spur Lake safe to swim in?

Good for swimming, clear water with low algae levels. Spur Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.

What is the water temperature of Spur Lake?

Spur Lake typically sits around 62°F at the surface in August, from 15 EPA Water Quality Portal field readings (2024–2025). That is a typical value for the month, not a live reading.

How deep is Spur Lake?

Spur Lake has a maximum depth of 3 feet. The lake covers 113 acres.

What fish are in Spur Lake?

Fish species found in Spur Lake include Panfish, Northern Pike. Spur Lake is located in Oneida County, Wisconsin.

What did the DNR fisheries survey find at Spur Lake?

Wisconsin DNR lists Panfish as common on Spur Lake. A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Spur Lake B from EPA Water Quality Portal chemistry, and the water-quality trend over 7 years of monitoring is declining. Catch rate is not a swim clearance and is not a weekly bite report.

Are there boat ramps on Spur Lake?

Spur Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Margaret Lake. Public access is listed as yes.

Where this data comes from

42 measurements from 3 monitoring stations, 2020–2026. Retrieved from the EPA Water Quality Portal on 2026-08-02.

Collected and reported by

  • Wisconsin Department of Natural ResourcesWIDNR_WQX42 samples · 2020–2026

Analytical methods

  • Phosphorus by Colorimetry
Monitoring station identifiers (3)

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

Lake size & watershed from HydroLAKES (HydroSHEDS)

Fish and recreation data from Wisconsin DNR Lakes

Named boat-access points from the USGS National Boat Ramps inventory