Sta Mouth of Riddick Ditch Lake
Chesapeake city County, VirginiaView mapDirections
Virginia DEQ publishes the water-quality measurements for Sta Mouth of Riddick Ditch Lake. Here is what has been measured.
- Eutrophic
- Impaired · Mercury
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Answers come straight from the public measurements and survey records on this page.
Sta Mouth of Riddick Ditch Lake in Chesapeake city County, Virginia has water-quality measurements published by Virginia DEQ, shown here as reported. Water clarity: 0.7 ft visibility. Phosphorus: 60 µg/L. Chlorophyll-a (algae): 7.2 µg/L.
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Sta Mouth of Riddick Ditch Lake is a productive, nutrient-rich eutrophic lake in Chesapeake city County, Virginia. Overall water quality is improving over recent sampling years. Compared to the 5 other monitored lakes in Chesapeake city County, Sta Mouth of Riddick Ditch Lake ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, Virginia DEQ, last sampled 2026-05-21. Grade methodology: LakeQuality methodology.
Swimming conditions
Readings onlyModerate 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. Sta Mouth of Riddick Ditch Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, pH / acidity. Check local advisories before you swim.
Whether Sta Mouth of Riddick Ditch Lake is safe to swim in today is a call for the Virginia Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Sta Mouth of Riddick Ditch Lake
These are the measurements Virginia DEQ publishes for Sta Mouth of Riddick Ditch Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 0.7 ft of visibility. Phosphorus 60 µg/L. Chlorophyll-a 7.2 µg/L. TSI 65.
| Metric | Value | EPA condition class |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.7 ft | Measured, not scored |
| Phosphorus | 60 µg/L | Poor |
| Chlorophyll-a (Algae) | 7.2 µg/L | Good |
| Trophic State Index (TSI) | 65 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Fishing Sta Mouth of Riddick Ditch Lake
Water Quality Trend: ↑ Improving
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | 0 m/yr | 5 |
| Phosphorus | → Stable | -0.81 µg/L/yr | 5 |
| Chlorophyll-a | ↑ Improving | -0.47 µg/L/yr | 5 |
EPA Impairment Status
Sta Mouth of Riddick Ditch Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit VAT-K39L_LKD01A06 · Official waterbody report · Matched by proximity (1.82 km)
Nearby Lakes in Chesapeake city County
Frequently asked questions about Sta Mouth of Riddick Ditch Lake
Where is Sta Mouth of Riddick Ditch Lake?
- Sta Mouth of Riddick Ditch Lake is a lake in Chesapeake city County, Virginia. Its water-quality measurements are published by Virginia DEQ and shown on this page as reported.
What is the water quality of Sta Mouth of Riddick Ditch Lake?
- Sta Mouth of Riddick Ditch Lake in Chesapeake city County, Virginia has water-quality measurements published by Virginia DEQ, shown here as reported. Water clarity: 0.7 ft visibility. Phosphorus: 60 µg/L. Chlorophyll-a (algae): 7.2 µg/L.
Is Sta Mouth of Riddick Ditch Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Sta Mouth of Riddick Ditch Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, pH / acidity. Check local advisories before you swim.
Explore Sta Mouth of Riddick Ditch Lake across LakeQuality
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Where this data comes from
130 measurements from 1 monitoring station, 2012–2026. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY
21VASWCB130 samples · 2012–2026
Analytical methods
- Tyler, John. 1968. The secchi disk, Limnology and Oceanograpy, 13(1):1-6.
- Total Phosphorus After Block Digestion
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
- 446.0 ~ EPA; Chlorophylls and Pheopigments in Phytoplankton by Spectrophotometry
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