Lake Audubon
Fairfax County, Virginia44 acresView mapDirections
Virginia DEQ publishes the water-quality measurements for Lake Audubon. Here is what has been measured.
- Limited data
Lake Audubon in Fairfax County, Virginia has water-quality measurements published by Virginia DEQ, shown here as reported. Water clarity: 4.1 ft visibility. Surface area: 44 acres.
Lake Audubon is a 44-acre lake in Fairfax County, Virginia. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, Virginia DEQ, last sampled 2022-07-11. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Lake Audubon 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 Lake Audubon
These are the measurements Virginia DEQ publishes for Lake Audubon, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 4.1 ft. TSI 57.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 4.1ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 57 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Lake Audubon
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
44 acres
No bathymetric survey has been published for Lake Audubon, so its depth is not documented here.
Stays via Stay22
Stays near Lake Audubon
Compare lakeside cabins, hotels, and vacation rentals near Lake Audubon in Fairfax County, Virginia — 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 Lake Audubon
Prices for Nov 6–8, 4 adults. Change dates on the map below.
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 Virginia’s top lakes →
Follow Lake Audubon’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Lake Audubon
Water Quality Trend: Improving
Based on 10 years of monitoring (2013–2022).
Water clarity
Improving10 years
Reservoir Info (USACE NID)
Lake Audubon is a man-made reservoir impounded by the Lake Audubon Dam, built primarily for recreation on the Snakeden Branch; earth-type dam, 46 ft tall and 340 ft long.
- Surface area
- 44 ac
- Normal storage
- 410 ac-ft
- Max storage
- 1,364 ac-ft
- Drainage area
- 2.5 sq mi
- Hazard class
- High
- Owner
- Reston Association;Reston Association;Reston Association
All listed purposes: Recreation;Flood Risk Reduction.
Source: USACE National Inventory of Dams, NID ID VA059021 · Operator website
Nearby Lakes in Fairfax County
Frequently asked questions about Lake Audubon
Where is Lake Audubon?
- Lake Audubon is a lake in Fairfax County, Virginia. Its water-quality measurements are published by Virginia DEQ and shown on this page as reported.
What is the water quality of Lake Audubon?
- Lake Audubon in Fairfax County, Virginia has water-quality measurements published by Virginia DEQ, shown here as reported. Water clarity: 4.1 ft visibility. Surface area: 44 acres.
Is Lake Audubon safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Lake Audubon across LakeQuality
More lakes in Virginia
Other Lakes in Virginia
Eutrophic Lakes in Virginia
Where this data comes from
11 measurements from 1 monitoring station, 2013–2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- North American Lake Management Society
NALMS11 samples · 2013–2022
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.