UPDATE TO BELOW PINE FLAT ALGAE PRESS RELEASE AS OF AUGUST 10, 2018
The Central Valley Water Board has completed a third round of testing for toxins at the U.S. Army Corps of Engineers Sacramento District’s Pine Flat Lake.
Five locations sampled within Pine Flat Lake reveal that conditions of the lake are improving and no cyanotoxins were found to be present. There has also been a noticeable change in water color, with no visible surface scum and no distinct green particulate matter in the water.
Cyanobacteria was found to be present in the lake in mid-June following water testing by the CVWB. Its presence can lead to the production of toxins in the water, however, toxin levels have NOT been detected in any of the recent water samples from Pine Flat Lake.
SACRAMENTO, California – The U.S. Army Corps of Engineers Sacramento District’s Pine Flat Lake has been experiencing algae blooms and signage has been posted around the lake as a precaution. Water samples collected June 15 by the California State Water Resources Control Board indicate the presence of cyanobacteria in the lake water. Cyanobacteria can lead to the production of toxins in the water, however, toxin levels were NOT detected in the recent tests, and the conditions of the algae blooms are evolving on a daily basis.
For current information on the algae bloom, check our Pine Flat Lake web page at
Pine Flat Lake park rangers are urging lake users to follow all
recommendations on posted signage, and “When in doubt, stay out.”
The U.S. Army Corps of Engineers is among the nation's leading federal providers of outdoor recreation with more than 5,000 recreation sites at 403 lakes and river projects located in 43 states.
Release no. 18-012