Click here to see the live and interactive Harmful Algal Bloom dashboard.
7-day Look Ahead Bloom Forecast
Below are pie charts describing the probability of a cyanobacterial bloom. The one on the left describes the predictions from two weeks ago, and the one on the right describes the latest prediction, for the coming week. Probabilities for different levels of cyanobacterial concentrations from two weeks ago (left) and for the next 7 days (right).
Hotspot Analysis - Chlorophyll-a
This map shows you the latest estimates of chlorophyll-a from the Sentinel 2a satellite. Note that the color scale is normalized to highlight the hotspots in the image. The colorscale does not provide an indication of the absolute amount of chlorophyll-a in the water and should be interpreted as an “index” of chlorophyll-a.
Latest chlorophyll-a map from the Sentinel 2a satelllite.
Hotspot Analysis - CyAN
This map shows you the latest estimates of the concentration of cyanobacteria (cells/ml) from the EPA CyAN program.
Latest CyAN map from the EPA.
Where we are in the season
This plot shows the historical expectation for HAB risk over the year. Use this chart to see where we are in the season (identified by the vertical red line). Harmful algal bloom risk over the year.
How rainy has it been?
We know that in general certain weather conditions promote the likelihood of HABs. Check this chart to see how wet it is, relative to past years. This is simply adding up each day’s rainfall, for each year. If the red line is below the orange line, then this year is dryer than average. Precipitation at the lake compared to previous years.
How hot has it been?
We know that in general certain weather conditions promote the likelihood of HABs. Check this chart to see how hot it is, relative to past years. This is simply adding up each day’s temperature, for each year. If the red line is above the orange line, this year is hotter than average. Air temperature at the lake compared to previous years.
Posts
Nov 18, 2024
HAB update
Nov 11, 2024
HAB update
Nov 04, 2024
HAB update
Oct 28, 2024
HAB update
Oct 21, 2024
HAB update
Oct 14, 2024
HAB update
Oct 07, 2024
HAB update
Sep 30, 2024
HAB update
Sep 23, 2024
HAB update
Sep 21, 2024
HAB update
Sep 02, 2024
HAB update
Aug 26, 2024
HAB update
Aug 19, 2024
HAB update
Aug 12, 2024
HAB update
Aug 05, 2024
HAB update
Jul 29, 2024
HAB update
Jul 22, 2024
HAB update
Jul 15, 2024
HAB update
Jul 08, 2024
HAB update
Jul 01, 2024
HAB update
Jun 24, 2024
HAB update
Jun 17, 2024
HAB update
Jun 12, 2024
HAB update
Jun 11, 2024
HAB update
Jun 10, 2024
HAB update
Jun 03, 2024
HAB update
May 27, 2024
HAB update
May 20, 2024
HAB update
May 13, 2024
HAB update
May 06, 2024
HAB update
Apr 29, 2024
HAB update
Apr 22, 2024
HAB update
Apr 15, 2024
HAB update
Apr 08, 2024
HAB update
Apr 01, 2024
HAB update
Mar 25, 2024
HAB update
Mar 18, 2024
HAB update
Mar 11, 2024
HAB update
Mar 04, 2024
HAB update
Feb 26, 2024
HAB update
Feb 19, 2024
HAB update
Feb 12, 2024
HAB update
Feb 05, 2024
HAB update
Jan 29, 2024
HAB update
Jan 22, 2024
HAB update
Jan 15, 2024
HAB update
Jan 08, 2024
HAB update
Jan 01, 2024
HAB update
Dec 25, 2023
HAB update
Dec 18, 2023
HAB update
Dec 11, 2023
HAB update
Dec 04, 2023
HAB update
Nov 27, 2023
HAB update
Nov 20, 2023
HAB update
Nov 13, 2023
HAB update
Nov 06, 2023
HAB update
Oct 30, 2023
HAB update
Oct 23, 2023
HAB update
Oct 16, 2023
HAB update
Oct 09, 2023
HAB update
Oct 02, 2023
HAB update
Sep 25, 2023
HAB update
Sep 18, 2023
HAB update
Sep 11, 2023
HAB update
Sep 04, 2023
HAB update
Aug 28, 2023
HAB update
Aug 21, 2023
HAB update
Aug 14, 2023
HAB update
Aug 07, 2023
HAB update
Jul 31, 2023
HAB update
Jul 24, 2023
HAB update
Jul 20, 2023
HAB update
Jul 17, 2023
HAB update
Jul 10, 2023
HAB update
Jul 03, 2023
HAB update
Jun 26, 2023
HAB update
Jun 19, 2023
HAB update
Jun 12, 2023
HAB update
Jun 05, 2023
HAB update
May 29, 2023
HAB update
May 22, 2023
HAB update
May 15, 2023
HAB update
May 08, 2023
HAB update
May 01, 2023
HAB update
Apr 24, 2023
HAB update
Apr 17, 2023
HAB update
Apr 10, 2023
HAB update
Apr 03, 2023
HAB update
Mar 27, 2023
HAB update
Mar 20, 2023
HAB update
Mar 13, 2023
HAB update
Mar 06, 2023
HAB update
Feb 27, 2023
HAB update
Feb 20, 2023
HAB update
Feb 13, 2023
HAB update
Feb 06, 2023
HAB update
Jan 30, 2023
HAB update
Jan 23, 2023
HAB update
Jan 16, 2023
HAB update
Jan 10, 2023
HAB update
Jan 02, 2023
HAB update
Dec 26, 2022
HAB update
Dec 19, 2022
HAB update
Dec 12, 2022
HAB update
Dec 05, 2022
HAB update
Nov 28, 2022
HAB update
Nov 21, 2022
HAB update
Nov 14, 2022
HAB update
Nov 07, 2022
HAB update
Oct 31, 2022
HAB update
Oct 24, 2022
HAB update
Oct 17, 2022
HAB update
Oct 10, 2022
HAB update
Oct 03, 2022
HAB update
Sep 26, 2022
HAB update
Sep 19, 2022
HAB update
Sep 12, 2022
HAB update
Sep 05, 2022
HAB update
Aug 29, 2022
HAB update
Aug 22, 2022
HAB update
Aug 15, 2022
HAB update
Aug 08, 2022
HAB update
Aug 01, 2022
HAB update
Jul 29, 2022
HAB update
Jul 25, 2022
HAB update
Jul 18, 2022
HAB update
Jul 11, 2022
HAB update
Jul 04, 2022
HAB update
Jun 27, 2022
HAB update
Jun 20, 2022
HAB update
Jun 13, 2022
HAB update
Jun 06, 2022
HAB update
Jun 05, 2022
HAB update
Jun 02, 2022
HAB update
Jun 01, 2022
HAB update
May 31, 2022
HAB update
May 29, 2022
HAB update
May 23, 2022
HAB update
May 16, 2022
HAB update
May 14, 2022
HAB update
May 13, 2022
HAB update
May 09, 2022
HAB update
May 03, 2022
HAB update
May 02, 2022
HAB update
May 01, 2022
HAB update
Apr 30, 2022
HAB update
Apr 29, 2022
HAB update
Apr 28, 2022
HAB update
Apr 27, 2022
HAB update
Apr 26, 2022
HAB update
Apr 25, 2022
HAB update
Apr 24, 2022
HAB update
Apr 23, 2022
HAB update
Apr 22, 2022
HAB update
Apr 21, 2022
HAB update
Apr 20, 2022
HAB update
Apr 19, 2022
HAB update
Apr 18, 2022
HAB update
Apr 17, 2022
HAB update
Apr 16, 2022
HAB update
Apr 15, 2022
HAB update
Apr 14, 2022
HAB update
Apr 08, 2022
HAB update
November 19, 2019
The 2019 HAB season has finished
October 28, 2019
The HAB season is ending, but algal blooms are still possible
October 23, 2019
End of the HAB season, but algal blooms are still possible
October 14, 2019
End of the HAB season, but algal blooms are still possible
October 7, 2019
End of the HAB season, but algal blooms are still a possibility
September 30, 2019
End of the HAB season, but algal blooms are still a possibility
September 24, 2019
Nearing the end of the summer, but algal blooms are still a possibility
September 17, 2019
Nearing the end of the summer, but algal blooms are still a possibility
September 9, 2019
Algae blooms and toxins remain a strong possibility
September 3, 2019
Algae blooms and toxins remain highly likely
August 27, 2019
Algae blooms remain highly likely; toxins too
August 20, 2019
Algae blooms remain highly likely; toxins too
August 12, 2019
Algae blooms remain highly likely; toxin likelihood high too
August 5, 2019
Algae blooms remain likely; toxins a possibility too
July 30, 2019
Algae blooms remain likely; toxins possible too
July 23, 2019
Algae blooms remain likely; toxins possible too
July 16, 2019
Algae bloom likelihood high; toxins possible too
July 9, 2019
Algae bloom likelihood remains high; toxins possible too
July 2, 2019
Algae bloom likelihood high; toxins possible too
June 25, 2019
Algae bloom likelihood still high, with possible toxins
June 17, 2019
Algae bloom likelihood high, possible toxins
June 10, 2019
Algae blooms and possible toxins
June 3, 2019
Algae continue to be abundant
May 27, 2019
Algae continue to be abundant
May 20, 2019
Algae may bloom
May 13, 2019
Algae continue to grow
May 6, 2019
The bloom season is starting
Apr 29, 2019
Algae are growing
Apr 22, 2019
Low algal abundances
Apr 15, 2019
Similar conditions to last week
Apr 8, 2019
Algae are present
Mar 28, 2019
A few algae growing, but no blooms or toxins
Mar 15, 2019
A few algae growing, but no blooms or toxins