An online poll that is being conducted currently is showing overwhelmingly that people want to catch lake trout. (60%) WOW! Now we need to make sure we help protect these amazing fish in Grand Lake. The Colorado Parks and Wildlife will conduct a new population study this fall. The current estimate for lake trout 19"-24" is only 1800. Compare that to Lake Granby which has 17.00 per surface acre. Let's make sure we educate people on this and how to catch and release so these old timers can swim again!
A secchi disk is an instrument used for measuring the clarity of water, especially seawater. It consists of a circular plate divided into alternating black and white quadrants and attached to a long measuring tape. The plate is lowered into the water, and the depth at which it is no longer visible from the surface is recorded.
Unfortunately, secchi disk data is not always the most reliable. This method can be misinterpreted in monitoring programs because of the number of variables.
For instance: the person taking the measurement; is it always the same person taking the reading, at the same site, the same time of day and same conditions?
Everyone has different eyesight that does change over time. This testing is the predominant method for measuring clarity, but we must be careful and look at these variables before making extremely important determinations.
These are the links to the organizations who presently measure this in Grand Lake. http://www.gcwin.org/ http://water.usgs.gov/