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LakeQuality

Dalhousibr Lake

NR
Not yet rated
Eutrophic
Limited DataEutrophic

Dalhousibr Lake in Lake County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 51.4 µg/L.

Typical in August
84°F
Public access
Yes

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Why Dalhousibr Lake has no grade

We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Dalhousibr Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded phosphorus, but not water clarity and algae (chlorophyll-a).

Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.

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

Dalhousibr Lake is a lake in Lake County, Florida. Limited fish-species data available. Public access is available with 1 public boat landing.

Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-04-29. Grade methodology: LakeQuality methodology.

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Swimming Safety

Not rated

Limited data

Not rated for swimming — there is not enough monitoring data to judge this lake

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Water quality measurements for Dalhousibr Lake

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

No clarity data. Phosphorus level: 51.4 µg/L. Trophic State Index: 61.

MetricValueGrade
Water Clarity (Secchi Depth)No recent samples
Phosphorus51.4 µg/LNot graded
Chlorophyll-a (Algae)No recent samples
Trophic State Index (TSI)61Eutrophic

High nutrients, frequent algae, reduced clarity

Where to stay near Dalhousibr Lake

Compare lakeside cabins, hotels, and vacation rentals near Dalhousibr Lake in Lake County, Florida — 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 Dalhousibr 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 Florida’s top lakes →

Water Temperature

Dalhousibr Lake typically sits around 84°F at the surface in August. Summer average is about 86°F. Usually warmest in Jul (about 88°F) and coldest in Jan (about 59°F). These are typical values by month — not a live reading.

Jan
59°
Feb
63°
Mar
67°
Apr
May
81°
Jun
86°
Jul
88°
Aug
84°
Sep
84°
Oct
77°
Nov
Dec

Typical surface water temperature by month, from 32 field readings (20102025) via the EPA Water Quality Portal. See the full Dalhousibr Lake water temperature breakdown →

Recreation & Access

1
Boat Landings
Yes
Public Access
  • Lake Dalhousie Public Boat RampPublic

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

Fishing Dalhousibr Lake

EPA Impairment Status

Dalhousibr Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).

Causes of impairment

Mercury

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

Source: EPA ATTAINS assessment unit FL2949 · Official waterbody report · Matched by proximity (0.51 km)

Graded lakes near Dalhousibr Lake

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

Nearby Lakes in Lake County

Frequently asked questions about Dalhousibr Lake

Where is Dalhousibr Lake?

Dalhousibr Lake is a lake in Lake County, Florida. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).

What is the water quality grade for Dalhousibr Lake?

Dalhousibr Lake in Lake County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 51.4 µg/L.

Is Dalhousibr Lake safe to swim in?

Not rated for swimming — there is not enough monitoring data to judge this lake. Dalhousibr Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.

What is the water temperature of Dalhousibr Lake?

Dalhousibr Lake typically sits around 84°F at the surface in August, from 32 EPA Water Quality Portal field readings (2010–2025). That is a typical value for the month, not a live reading.

Are there boat ramps on Dalhousibr Lake?

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

Where this data comes from

7 measurements from 1 monitoring station, 2023–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.

Collected and reported by

  • Submitting organization not recorded for these samples7 samples · 2023–2025
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