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Wednesday, September 18, 2019

Algae Bloom on Bishop Lake

Bishop Lake is a man-made lake at Bishop Ranch in San Ramon. It is a well managed, and well cared for lake that is the  beautiful centerpiece for the landscape. A walking trail circumnavigates the lake, with lots of shade trees, benches, and interesting plants along the way for walkers to enjoy.

Algae bloom?

Fish and frogs live in the lake, and various waterfowl are attracted to its shores, including heron, geese, and ducks. We've had the pleasure to observe many batches of ducklings and goslings hatch and grow to quick maturity over the seasons. Submerged plants remove nutrients and maintain water clarity. Shoreline plants provide cover for insects and small fish.

Submerged plants in bloom

We're nearing the end of summer, and I've noticed what I would call "algae bloom" at the lake edge.  According to Wikipedia, an algae bloom (or algal bloom) is "a rapid increase or accumulation in the population of algae in freshwater or marine water systems, and is recognized by the discoloration in the water from their pigments".  I've also noticed that some of the submerged plants are now appearing in patches on the lake surface. Sounds like a job for The Beast of Lake Bishop!

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