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LakeQuality

Whitmore Lake

Livingston County, Michigan441 acresView mapDirections

NR
Not rated

Not Rated: one monitoring station are on record, but they measured water clarity only. LakeQuality’s A–F method grades total phosphorus, total nitrogen, chlorophyll-a, and turbidity; clarity is shown, not scored.

Water temp
No reading
No gauge
Clarity
9 ft
Secchi · sampled 2022
Max depth
69 ft
Bathymetric survey
Level
No reading
No gauge
Trend
Improving
5 years of samples
  • Impaired · Mercury
  • 69 ft max depth
  • Public access
  • Limited data

Whitmore Lake in Livingston County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 9 ft visibility. Maximum depth: 69 ft. Surface area: 441 acres.

Clarity
9 ft
Max depth
69 ft
Area
441 acres
Trend
Improving
Public access
Yes
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Stays near Whitmore Lake

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Watch Whitmore Lake’s letter

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Free interactive depth-contour map of Whitmore Lake, reaching a maximum surveyed depth of 69 ft. Toggle Depth contours to overlay the bathymetric survey lines. Contour data from Michigan DNR.

Why Whitmore Lake has no grade

Whitmore Lake has monitoring on record from one station, but only water clarity was measured. LakeQuality’s A–F letter uses total phosphorus, total nitrogen, chlorophyll-a, and turbidity against EPA National Lakes Assessment condition classes. With none of those grading measurements on record, Whitmore Lake is Not Rated — not an F. Its 9-foot median from 76 readings collected 2019–2022 is still shown as clarity, but clarity alone cannot earn a letter.

Not Rated is EPA Integrated Reporting Category 3 — insufficient information. Everything below that has been measured is still reported on this page.

Sampling is run by EGLE and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.

Whitmore Lake is a 441-acre lake in Livingston County, Michigan with a maximum depth of 69 feet. Overall water quality is improving over recent sampling years. The lake supports 1 documented fish species including Bowfin. Public access is available with 1 public boat landing.

Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2022-09-15. Grade methodology: LakeQuality methodology.

What Whitmore Lake is good for

From access and monitoring records, not editorial picks.

  • Boat launch1 documented ramp
  • Deep water69 ft surveyed max depth

Swimming Safety

Not rated

Limited data

The letter is not a swimming clearance. Whitmore Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury, pCBs. Check local advisories before you swim.

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Water quality measurements for Whitmore Lake

These readings exist but are not enough for an A–F grade — see why.

Moderate clarity, visible to about 9 ft. TSI 45.

MetricValueGrade
Water Clarity (Secchi Depth)9 ftNot graded
PhosphorusNo recent samples
Chlorophyll-a (Algae)No recent samples
Trophic State Index (TSI)45Mesotrophic

Moderate nutrients, good water quality

Lake Details

CharacteristicValue
Maximum Depth69 ft
Surface Area441 acres
Public AccessYes

Recreation & Access

1
Boat Landings
Yes
Public Access
  • Lake WhitmorePublic

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 Whitmore Lake

Based on 5 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Improving+0.886 m/yr5
See year-by-year chart →

Reservoir Info (USACE NID)

Whitmore Lake is a man-made reservoir impounded by the Whitmore Lake Control Structure (completed 1969), built primarily for recreation on the No Outlet; concrete-type dam, 8 ft tall.

Surface area
441 ac
Normal storage
450 ac-ft
Max storage
900 ac-ft
Hazard class
Low
Owner
Washtenaw County Drain Commissioner

Source: USACE National Inventory of Dams, NID ID MI04005 · Operator website · Matched by proximity (0.99 km)

EPA Impairment Status

Whitmore Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).

Causes of impairment

MercuryPCBs

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit MI040900050301-02 · Official waterbody report

Regulated Pollution Sources Nearby

3 EPA-permitted facilities operate within about 5 miles of Whitmore Lake under Clean Water Act (NPDES) discharge permits, including 1 classified by the EPA as major discharger. 1 facility has a reported Clean Water Act violation in the past three years.

  • Northfield Twp Wwtp
    Whitmore Lake · 1.5 mi away · NPDES MI0023710
    MajorRecent violation
  • Hop-In Mich-Whitmore Lake
    Whitmore Lake · 2.4 mi away · NPDES MI0053341
  • Clark Station #2118
    Whitmore Lake · 3 mi away · NPDES MIG080990

Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.

Graded lakes near Whitmore Lake

Whitmore Lake has no grade, but these lakes within a short drive do.

Nearby Lakes in Livingston County

Frequently asked questions about Whitmore Lake

Where is Whitmore Lake?

Whitmore Lake is a lake in Livingston County, Michigan. LakeQuality has not rated this lake (UNRATED) — the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity.

What is the water quality grade for Whitmore Lake?

Whitmore Lake in Livingston County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 9 ft visibility. Maximum depth: 69 ft. Surface area: 441 acres.

Is Whitmore Lake safe to swim in?

The letter is not a swimming clearance. Whitmore Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury, pCBs. Check local advisories before you swim.

How deep is Whitmore Lake?

Whitmore Lake has a maximum depth of 69 feet. The lake covers 441 acres.

What fish are in Whitmore Lake?

Fish species found in Whitmore Lake include Bowfin. Whitmore Lake is located in Livingston County, Michigan.

Are there boat ramps on Whitmore Lake?

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

Where this data comes from

76 measurements from 1 monitoring station, 2019–2022. Retrieved from the EPA Water Quality Portal on 2026-08-26.

Collected and reported by

  • North American Lake Management SocietyNALMS76 samples · 2019–2022
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

Regulated discharger data from EPA ECHO (ICIS-NPDES)

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