Bloom Updates

Please find below recent updates on the reporting of Harmful Algal Blooms.  The map on this page shows the 31 different zones that are regularly monitored by over 35 different citizen volunteers trained by the New York State Department of Environmental Conservation.

To view recent and past reports of Harmful Algal Blooms in New York state, please click HERE.

For more information on Harmful Algal Blooms from the NYSDEC please click HERE.


Recent and archived 2019 confirmed and suspicious blooms can be found by clicking HERE and zooming in on Skaneateles Lake



Week of 7/20/18     No Blooms

Week of 7/27/18     No Blooms

Week of 8/3/18       Bloom on 8/4 in Zone 3525, Bloom on 8/5 in Zone 3501, Bloom on 8/7 in Zone 3524. DISSIPATED.

Week of 8/10/18     No Blooms

Week of 8/17/18     No Blooms

Week of 8/24/18     No Blooms

Week of 8/31/18     No Blooms

Week of 9/7/18       On 9/4/18 confirmed HAB with high toxins in Zone 3524. Other suspicious blooms were seen on the west side spanning from Zones 3524 to 3516. DISSIPATED.

Week of 9/14/18      On 9/13/18 confirmed HAB near zones 3511, 3514, 3515, 3524, and in Mandana. DISSIPATED

Week of 9/21/18      On 9/16/18 confirmed HAB in zone 3502. DISSIPATED.

Week of 9/28/18      On 9/27/18 confirmed HAB in zone 3524. DISSIPATED.

Week of 10/5/18       No Blooms

Week of 10/12/18      On 10/8/18 confirmed HAB in zone 3524. DISSIPATED.

2019 Harmful Algal Bloom (HAB) Monitoring Zones

31 zones monitored by NYSDEC trained citizen volunteers