Baltimore County Lake Quality
Maryland, 6 lakes, measured by MDE
Baltimore County holds 6 monitored lakes. With a sample that small the county-level summary describes those specific waters, not necessarily every water body in the county. The 6 monitored lakes in Baltimore County carry whatever clarity, phosphorus, and chlorophyll-a readings MDE has published, shown as reported.
Most of the county's monitored lakes are shallow, under 50 feet, which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed.
Where to stay near Baltimore County
Top-rated places to stay near Baltimore 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 Baltimore County?
Get lake water-quality updates plus the best cabin & lodging deals near Baltimore County — straight to your inbox. No spam, unsubscribe anytime.
Quick Answers for Baltimore County
Planning a trip? Check special fishing regulations for Druid Lake — or check the official Maryland fishing regulations.
All Lakes in Baltimore County
6 lakes · 0 ranked on readings, 6 without enough sampling0 lakes ranked on readings · 6 without enough sampling, hidden
| # | Lake | Clarity | Phosphorus | Algae | Trophic | Max Depth | Access |
|---|---|---|---|---|---|---|---|
| Druid LakeBaltimore | No recent samples | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Lake AshburtonBaltimore | No recent samples | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Lake MontebelloBaltimore | No recent samples | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Lake RolandBaltimore | No recent samples | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Loch Raven ReservoirBaltimore | No recent samples | No recent samples | No recent samples | No recent samples | 72 ft | ✓ Public | |
| Prettyboy ReservoirBaltimore | No recent samples | No recent samples | No recent samples | No recent samples | No recent samples | ✓ Public |
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 Maryland
Browse every Maryland 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 Maryland Department of the Environment. See data sources.