Is the lake safe?

Rensselaer County, New York

Big Bowman Pond algae bloom status

Not listed in 2025

2025 season, the latest published by New York

Is Big Bowman Pond safe to swim in?

Big Bowman Pond was not on New York's bloom list in 2025. It was last listed in 2018, with confirmed bloom status. Blooms have been reported here in two separate years since 2016.

No recent report isn't the same as safe, because most lakes are only checked occasionally. Look at the water and the signs before you swim.

Check today on the NYHABS map
Years with blooms
2 of 3
High-toxin years
0 2012–18
Data checked
24 October 2026

Big Bowman Pond algae bloom history

New York's Department of Environmental Conservation listed Big Bowman Pond as having a harmful algal bloom in 2 of the 3 years from 2016 to 2018.

Blooms were confirmed by state staff in 2 years; in the other years they were reported as suspicious but not confirmed.

  1. 2016 Confirmed, 2 reports
  2. 2017 None
  3. 2018 Confirmed, 1 report
Confirmed bloomNot on the bloom list

When do algae blooms happen at Big Bowman Pond?

About 100% of reports fall between May and September, when warm, calm, sunny weather lets blue-green algae multiply.

Blooms can appear, move with the wind and fade within hours or days, so the time of year is only a guide.

January: 0% of reports
February: 0% of reports
March: 0% of reports
April: 0% of reports
May: 0% of reports
June: 50% of reports
July: 0% of reports
August: 50% of reports
September: 0% of reports
October: 0% of reports
November: 0% of reports
December: 0% of reports
Share of reports by month. Darker bars are the peak months.

Recent Big Bowman Pond algae reports

New York publishes one entry per lake for each season it appears on the bloom list, showing when it was first and last listed and its highest status.

DateResult
22 June 2018 to 2 October 2018 Confirmed bloom
19 August 2016 to 27 October 2016 Confirmed bloom

What the New York results mean

New York sorts each bloom by how far it has been checked.

Suspicious bloom
Reported to the state but not yet confirmed as blue-green algae.
Confirmed bloom
State staff confirmed blue-green algae from photos or a sample. Avoid contact where the bloom is.
High toxins
Toxin levels high enough to be a health concern. Recorded separately from 2012 to 2018.

Is Big Bowman Pond safe for dogs?

Dogs are at the greatest risk from toxic algae. They swallow water while swimming, eat scum on the shore and lick algae off their fur afterwards, and a small amount can kill a dog within hours.

  • Keep your dog on a lead near water that looks green, scummy, foamy or discoloured, and away from algae washed up on the shore.
  • If your dog gets in, rinse it straight away with clean water and don't let it lick its coat.
  • Call a vet immediately if your dog vomits, drools, has diarrhoea, staggers, shakes or seems weak after being near the water.

Health effects of toxic algae

Blue-green algae (cyanobacteria) can produce toxins that affect the liver, nervous system and skin. Swallowing water during a bloom can cause stomach pain, vomiting and diarrhoea. Skin contact can cause rashes, and breathing spray from the water can irritate the eyes, nose and throat. Children are at higher risk because they are smaller and more likely to swallow water.

How to spot a bloom

Toxic blooms can look like pea soup, spilled paint or green streaks on the surface, and they can also be blue, brown, white or red. Scum often collects along the shore downwind. If you can't see your feet in knee-deep water, or you aren't sure, stay out.

Don't drink untreated lake water, and don't boil it to make it safe: boiling doesn't destroy algal toxins. If you feel unwell after contact with the water, contact a doctor or Poison Control on 1-800-222-1222.

Nearby lakes with algae reports

All Rensselaer County lakes with algae reports

Questions about Big Bowman Pond

Is there algae in Big Bowman Pond right now?

Big Bowman Pond was not on New York's bloom list in 2025. It was last listed in 2018, with confirmed bloom status. New York publishes its data once a year, so for today's conditions check the NYHABS map and the signs at the shore.

When was the last algae bloom at Big Bowman Pond?

The most recent entry in New York's data is from 22 June 2018: a confirmed bloom.

Has Big Bowman Pond had toxic algae before?

Yes. Blooms are recorded in 2 of the 3 years from 2016 to 2018.

Can dogs swim in Big Bowman Pond?

Keep dogs out of the water whenever a bloom is reported or the water looks green, scummy or discoloured. Dogs are the animals most often killed by algal toxins because they swallow water and lick their fur. If your dog swims in water that might have algae, rinse it with clean water and call a vet if it vomits, drools, staggers or seems weak.

Can you eat fish caught in Big Bowman Pond during a bloom?

If you keep fish caught during a bloom, health agencies advise removing the guts and liver and rinsing the fillets in clean water before cooking, because toxins collect most in the organs. Some agencies advise not eating fish from an active bloom at all, so follow local guidance.

About this data

This page uses official records from the New York State Department of Environmental Conservation (DEC), which published as a yearly summary; the current season is shown on the NYHABS map. Reports are grouped by waterbody. The site was last rebuilt on 24 October 2026.

States only test some lakes, some of the time, so a lake without a recent report hasn't necessarily been checked. This page is independent, isn't affiliated with the State of New York, and isn't health advice. View the source data.