Christiana Lake
Cass County, Michigan197 acresView mapDirections
EGLE publishes the water-quality measurements for Christiana Lake. Here is what has been measured.
- Mesotrophic
- Impaired · Mercury
- 40 ft max depth
Christiana Lake in Cass County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 8 ft visibility. Phosphorus: 21 µg/L. Chlorophyll-a (algae): 6.6 µg/L. Maximum depth: 40 ft. Surface area: 197.1 acres.
Christiana Lake is a 197-acre mesotrophic lake in Cass County, Michigan with a maximum depth of 40 feet. Water clarity is improving over recent sampling years. Compared to the 9 other monitored lakes in Cass County, Christiana Lake ranks #4 for water quality.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2023-09-16. Methodology: how these readings are compared.
What Christiana Lake is good for
From access and monitoring records, not editorial picks.
- Deep water40 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. Christiana Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, oxygen depletion (low DO). Check local advisories before you swim.
Whether Christiana Lake is safe to swim in today is a call for the Michigan Department of Environment, Great Lakes, and Energy (EGLE) and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Christiana Lake
These are the measurements EGLE publishes for Christiana Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Moderate clarity, visible to about 8 ft. Phosphorus 21 µg/L. Chlorophyll-a 6.6 µg/L. TSI 48.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 8ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 21µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 6.6µg/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. | 48 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Christiana Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Christiana Lake typically sits around 66°F at the surface in September. Summer average is about 66°F. Usually warmest in Aug (about 68°F) and coldest in May (about 57°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (57°F) to its warmest (68°F).
Typical surface water temperature by month, from 502 field readings (2012–2022) via the EPA Water Quality Portal. See the full Christiana Lake water temperature breakdown →
Lake Details
Max depth
40 ft
Surface area
197 acres
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Stays near Christiana Lake
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Fishing Christiana Lake
Water Quality Trend: Stable
Based on 6 years of monitoring (2016–2023).
Water clarity
Improving6 years
Phosphorus
Stable+0.29 µg/L/yr5 years
Chlorophyll-a
Worsening+0.9 µg/L/yr4 years
EPA Impairment Status
Christiana Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Aquatic life, Fish consumption.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MI040500011403-02 · Official waterbody report
Nearby Lakes in Cass County
Frequently asked questions about Christiana Lake
Where is Christiana Lake?
- Christiana Lake is a lake in Cass County, Michigan. Its water-quality measurements are published by EGLE and shown on this page as reported.
What is the water quality of Christiana Lake?
- Christiana Lake in Cass County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 8 ft visibility. Phosphorus: 21 µg/L. Chlorophyll-a (algae): 6.6 µg/L. Maximum depth: 40 ft. Surface area: 197.1 acres.
Is Christiana Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Christiana Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, oxygen depletion (low DO). Check local advisories before you swim.
What is the water temperature of Christiana Lake?
- Christiana Lake typically sits around 66°F at the surface in September, from 502 EPA Water Quality Portal field readings (2012–2022). That is a typical value for the month, not a live reading.
How deep is Christiana Lake?
- Christiana Lake has a maximum depth of 40 feet. The lake covers 197.1 acres.
Explore Christiana Lake across LakeQuality
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Where this data comes from
100 measurements from 1 monitoring station, 2016–2023. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- Michigan EGLE - MiCorps
21MICH_MICORPS100 samples · 2016–2023
Analytical methods
- Phosphorus by Colorimetry
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
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
Impairment status from EPA ATTAINS 303(d) database