rivers

#26: Sand Boil Filter: A more efficient tool to combat internal levee erosion

When river levels rise, so does the threat of sand boils, which occur when water bubbles out of the ground near the base of a levee, surrounded by a mound of displaced soil. Caused by increased pressure, sand boils are a visible sign of erosion within a levee. And unless they are treated immediately, these…

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#26: Sand Boil Filter: A more efficient tool to combat internal levee erosion

When river levels rise, so does the threat of sand boils, which occur when water bubbles out of the ground near the base of a levee, surrounded by a mound of displaced soil. Caused by increased pressure, sand boils are a visible sign of erosion within a levee. And unless they are treated immediately, these…

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#7: Harmful Algal Blooms

Harmful algal blooms occur in freshwater when aquatic microorganisms, called cyanobacteria, grow rapidly and sometimes release toxins that are dangerous to humans and aquatic life. Such events have been known to compromise drinking water reservoirs, disrupt recreation, shut down fisheries, and kill fish, birds and other aquatic species. And scientists largely agree that these events…

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