And what country can preserve its liberties if their rulers are not warned from time to time that their people preserve the spirit of resistance? Let them take arms. The remedy is to set them right as to facts, pardon and pacify them. What signify a few lives lost in a century or two? The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.
Tuesday, May 28, 2019
Lake Tahoe's famed water gets clearer after all-time low
The clarity of Lake Tahoe's cobalt blue water improved last year from its worst level in a half-century after weather and runoff returned to more normal conditions at the alpine lake straddling the California-Nevada line.
A dinner plate-sized disc used to measure clarity was visible at an average depth of 70.9 feet (21.6 meters) in 2018, scientists at the University of California, Davis, Tahoe Environmental Research Center said Thursday.
That's an improvement of over 10 feet from what it was in 2017.
The new clarity measurement is in line with the five-year average of 70.3 feet (21.4 meters) — an improvement of nearly a foot (30 centimeters) from the previous five-year average.
Clarity was best when it first was recorded in 1968, with an average depth of 102.4 feet (31.2 meters). The disc used to measure it typically was visible at depths of 85 feet (30 meters) or deeper through the 1970s and hovered near the worst levels during a severe drought in the late 1990s.