Timber Lake
Timber Lake in Burlington County, New Jersey has a water quality grade of C (Fair). Water clarity: 4.6 ft visibility. Phosphorus: 25.8 µg/L. Chlorophyll-a (algae): 19.9 µg/L. Surface area: 24 acres.
- Clarity
- 4.6 ft
- Area
- 24 acres
- Type
- Eutrophic
Timber Lake is a 24-acre productive, nutrient-rich eutrophic lake in Burlington County, New Jersey. Water quality is graded C based on 2 sampling years through 2022. Compared to the 11 other monitored lakes in Burlington County, Timber Lake ranks #8 for water quality.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2022-10-05. Grade methodology: LakeGrade methodology.
Watch Timber Lake water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Grade onlyLimited data
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Swim with caution, moderate algae may be present
Water Quality Grade: C (Fair)
Murky, only visible to about 4.6 ft. Phosphorus level: 25.8 µg/L. Chlorophyll-a: 19.9 µg/L. Trophic State Index: 55.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.6 ft | Not graded |
| Phosphorus | 25.8 µg/L | Good |
| Chlorophyll-a (Algae) | 19.9 µg/L | Fair |
| Trophic State Index (TSI) | 55 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Timber Lake
Compare lakeside cabins, hotels, and vacation rentals near Timber Lake in Burlington County, New Jersey — 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 Timber Lake
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 24 acres |
No bathymetric survey has been published for Timber Lake, so its depth is not documented here.
Fishing Timber Lake
Reservoir Info (USACE NID)
Timber Lake is a man-made reservoir impounded by the Timber Lake Dam (completed 1955), built primarily for recreation on the Haynes Creek-TR; earth-type dam, 19 ft tall and 300 ft long.
- Surface area
- 24 ac
- Normal storage
- 90 ac-ft
- Drainage area
- 9.3 sq mi
- Hazard class
- High
- Owner
- Birchwood Lake Colony Club
Source: USACE National Inventory of Dams, NID ID NJ00416 · Operator website
EPA Impairment Status
Timber 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 NJ02040202060030-01 · Official waterbody report · Matched by proximity (2.74 km)
County Ranking
Ranked #8 of 12 lakes in Burlington County
Nearby Lakes in Burlington County
Frequently asked questions about Timber Lake
Where is Timber Lake?
- Timber Lake is a lake in Burlington County, New Jersey. LakeQuality grades it C for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Timber Lake?
- Timber Lake in Burlington County, New Jersey has a water quality grade of C (Fair). Water clarity: 4.6 ft visibility. Phosphorus: 25.8 µg/L. Chlorophyll-a (algae): 19.9 µg/L. Surface area: 24 acres.
Is Timber Lake safe to swim in?
- Swim with caution, moderate algae may be present. Timber Lake has a water quality grade of C (Fair). Algae concentration (chlorophyll-a) is 19.9 µg/L. Always check local health department advisories before swimming.
Explore Timber Lake across LakeGrade
More New Jersey Lake Rankings
Other Grade C Lakes in New Jersey
Eutrophic Lakes in New Jersey
Where this data comes from
44 measurements from 3 monitoring stations, 2022. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- NJDEP Bureau of Freshwater and Biological Monitoring
NJDEP_BFBM44 samples · 2022
Analytical methods
- Phosphorus by Colorimetry
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
Monitoring station identifiers (3)
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