Berks County Lake Quality
Pennsylvania, 6 lakes, measured by PA DEP
Berks County has 6 monitored lakes — a thin enough sample that one or two stressed lakes can move the county average noticeably. Use the per-lake pages below for what actually matters. 1 of those lake carry recent nutrient and algae readings. The county-level summary describes that subset, not every water body listed. Phosphorus and algae readings vary widely across Berks County; the per-lake pages below carry the numbers.
The county's lakes lean shallow, which makes the readings sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest measured lake is Ontelaunee Lake.
Where to stay near Berks County
Top-rated places to stay near Berks County
Prices for Oct 16–18, 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 trip to Berks County?
Get lake water-quality updates plus the best cabin & lodging deals near Berks County — straight to your inbox. No spam, unsubscribe anytime.
Quick Answers for Berks County
Planning a trip? Check special fishing regulations for Ontelaunee Lake — or check the official Pennsylvania fishing regulations.
All Lakes in Berks County
6 lakes · 1 ranked on readings, 5 without enough sampling1 lake ranked on readings · 5 without enough sampling, hidden
| # | Lake | Clarity | Phosphorus | Algae | Trophic | Max Depth | Access |
|---|---|---|---|---|---|---|---|
| 1 | Ontelaunee LakeBerks | No recent samples | 40 µg/L | 12.9 µg/L | No recent samples | No recent samples | Not recorded |
| Hopewell LakeBerks | No recent samples | No recent samples | No recent samples | No recent samples | 10 ft | ✓ Public | |
| Glen Morgan LakeBerks | No recent samples | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Blue Marsh LakeBerks | No recent samples | No recent samples | No recent samples | No recent samples | 53 ft | ✓ Public | |
| Trout Run ReservoirBerks | No recent samples | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| New Kernsville LakeBerks | No recent samples | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded |
NR = no nutrient or algae reading on record. The measurements are published as the authority reports them. Where the data comes from.
Lake Match
Which lake suits how you actually use one?
Six questions — swimming, fishing, quiet, cabins, drive time — and a shortlist of lakes that fit, with the water quality behind each one.
Other Counties in Pennsylvania
Browse every Pennsylvania lake, or the full directory of lakes across all United States (49 states), Canada (Ontario, Québec, Nova Scotia, British Columbia and Newfoundland and Labrador), and 38 other country hubs..
Source: the Pennsylvania Department of Environmental Protection. See data sources.