Thursday, February 28, 2013

Lake Tahoe: Great Bike Ride, Even Better Fish Story



Each September round bar cyclists gather in Lake Tahoe for a 72-mile ride around the big, pristine lake.  The fastest time was set in 2010 at 2 hours, 15 minutes and 21.9 seconds.  Race legend has it that local school boy Greg LeMond (he grew up in Reno) completed the 72 miles in 3:15 while still a high school student.  It is not a closed course so traffic and other obstacles can slow progress but the first nine miles do have an escort that gets riders through a series of 25 traffic lights.  The course begins and ends in front of the Zephyr Cove Lodge and riders will have an elevation gain of 3,900 feet.


The SBT crew recently blogged about a ride around Crater Lake in Oregon.  We noted that Crater Lake is the deepest lake in the United States.  Lake Tahoe is second.  Lake Tahoe is the creation of the Sierra Nevada Mountains and as the high peaks of the Sierras were pushed up something had to in turn, push down.  This movement of tectonic plates helped take the lake to a maximum depth of almost 1,700 feet.  (Crater Lake is about 300 feet deeper).  Like Crater Lake, Lake Tahoe is nearly as clear with recent water clarity measured at 70 feet.  In the 1960s that clarity was measured down to 100 feet.  The creeping murkiness has not been gradual, scientists studying the lake think it has been only since 2006.  The reason for this cloudiness is goldfish.  And we aren’t talking about the goldfish you kept in a tank as a kid or swallowed stupid drunk in college.  These things are wild Giant Goldfish.  Yes, they do exist.


Researchers are alarmed and not sure how these beasts were able to enter the lake.  They are a problem because they eat constantly thus wiping out the food sources of other native fish.  The round-the-clock feeding leads to just as frequent excreting, and all of that excrement in the water leads to cloudy conditions and lower oxygen supplies.  This in turn leads to the formation of algae.  


Lake Tahoe is at its widest part 22 miles and it is as we mentioned, deep.  Rounding up all of the unwanted goldfish (probably released from simple suburban fish tanks years ago, what enviro-scientists call "aquarium dumping") has proven to be quite difficult.  The Environmental Protection Agency has stepped in to help.  The EPA is experimenting with electro-fishing, an electrical pulse is sent into the depths to stun fish.  The temporarily paralyzed fish then float to the surface.  The Giant Goldfish are then taken while the other species are allowed to recover and go back to their daily routine.  Electro-fishing is a slow process and only removes about 50 fish at a time.  It is believed the fish are outpacing the catching program and they continue to grow.  On average they weigh nearly five pounds and grow to nearly two feet in length.  See the photo for proof.

If you are planning to be a part of the 72-mile Great Lake Tahoe Bike Ride the date is set for September 28, 2013.  Visit the event website at www.laketahoemarathon.com/bike.  It might be a good idea to bring your fishing pole, you may have an awesome fish story to tell. 

Visit our website for a news video of the Goldfish problem in Lake Tahoe, www.stickybottleteam.net.
 

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