Colorado’s lakes serve as a needed respite during sweltering summer days, ... Possible blooms have been reported in eight others, including Blue Heron Lake at St. Vrain State Park outside Longmont.

The city of Longmont is advising residents to be aware of the risks of blue-green algae blooms, also known as cyanobacteria, when interacting with recreational bodies of water this summer.

4 University of Colorado. Little Gaynor Lake is a small endorheic basin between Niwot and Longmont, Colorado. The lake supports high rates of phytoplankton production and, at times, also the ...

Longmont would annex McIntosh Lake and a set of city-owned properties to the north, west and south of that irrigation reservoir, under a proposal up for discussion at Tuesday night’s City ...