Speights Run
Suffolk city County, Virginia197 acresView mapDirections
Virginia DEQ publishes the water-quality measurements for Speights Run. Here is what has been measured.
- Eutrophic
- Impaired · Algal growth
Speights Run in Suffolk city County, Virginia has water-quality measurements published by Virginia DEQ, shown here as reported. Water clarity: 3.1 ft visibility. Phosphorus: 40 µg/L. Chlorophyll-a (algae): 25.8 µg/L. Surface area: 197 acres.
Speights Run is a 197-acre productive, nutrient-rich eutrophic lake in Suffolk city County, Virginia. Compared to the 13 other monitored lakes in Suffolk city County, Speights Run ranks #10 for water quality.
Source: EPA Water Quality Portal sampling records, Virginia DEQ, last sampled 2024-10-29. Methodology: how these readings are compared.
Swimming conditions
Readings onlyAlgae risk
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. Speights Run is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, oxygen depletion (low DO). Check local advisories before you swim.
Whether Speights Run 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 Speights Run
These are the measurements Virginia DEQ publishes for Speights Run, 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 3.1 ft of visibility. Phosphorus 40 µg/L. Chlorophyll-a 25.8 µg/L. TSI 60.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3.1ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 40µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 25.8µg/L | Fair GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 60 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Speights Run
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
197 acres
No bathymetric survey has been published for Speights Run, so its depth is not documented here.
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Stays near Speights Run
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Fishing Speights Run
Water Quality Trend: Stable
Based on 6 years of monitoring (2012–2024).
Water clarity
Stable6 years
Phosphorus
Stable-0.92 µg/L/yr6 years
Chlorophyll-a
Stable-0.37 µg/L/yr6 years
Reservoir Info (USACE NID)
Speights Run is a man-made reservoir impounded by the Speights Run Dam, built primarily for water supply on the Speights Run - VAHU6 JL 44 Lake Kelby - Speights Run; earth-type dam, 26 ft tall and 1,800 ft long.
- Surface area
- 197 ac
- Normal storage
- 875 ac-ft
- Max storage
- 3,900 ac-ft
- Drainage area
- 12.91 sq mi
- Hazard class
- High
- Owner
- City of Portsmouth
Source: USACE National Inventory of Dams, NID ID VA800010 · Operator website · Matched by proximity (0.1 km)
EPA Impairment Status
Speights Run is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Aquatic life.
Source: EPA ATTAINS assessment unit VAT-G12L_SPE01A06 · Official waterbody report
Nearby Lakes in Suffolk city County
Frequently asked questions about Speights Run
Where is Speights Run?
- Speights Run is a lake in Suffolk 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 Speights Run?
- Speights Run in Suffolk city County, Virginia has water-quality measurements published by Virginia DEQ, shown here as reported. Water clarity: 3.1 ft visibility. Phosphorus: 40 µg/L. Chlorophyll-a (algae): 25.8 µg/L. Surface area: 197 acres.
Is Speights Run safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Speights Run is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, oxygen depletion (low DO). Check local advisories before you swim.
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Eutrophic Lakes in Virginia
Where this data comes from
152 measurements from 1 monitoring station, 2012–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY
21VASWCB152 samples · 2012–2024
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
- 2130 B ~ Nephelometric Method
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