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Horseshoe Lake News
Information on Blue-Green Algae (Cyanobacteria) Living Sustainably in Seguin Guide
2010 Come Together Picnic photos
Our Spring 2010 Newsletter.pdf (for high-speed connections or very patient dial-up users)
Horseshoe Lake Water Level Data We have now completed our water level measurements for Horseshoe and Virtue Lakes for 2009 and we find that the data is highly consistent with previous years. The simple graph below portrays the 31-year average water level (in red) using readings from each year at ten day intervals. The graph also highlights the current year’s actual readings and the historical highs and lows over the 31-year period. This data clearly shows that the current year, in spite of abnormal early rainfall and abnormal dryness later, is well within the historical limits. The data demonstrates that Mother Nature is fairly consistent in the way she treats our lakes and that the current temporary weir is keeping us within the boundaries necessary to satisfy our needs.
The backup data for the graph above is compiled in the detailed table below. This table can be used to compare the actual readings during any 10-day period over the year. The second graph, below the table, plots all the data in the table. The heavy red line is the average water level over the 31-year period. Note that the water level is typically high in Jan, then drops as a result of the usual thaw in Jan/Feb. The level peaks again in April during the spring thaw and rains. The level typically declines to a low in Aug/Sept, then autumn rains cause the level to rise until the Dec freeze-up. The 31 curves representing each year from 1978 – 2009 illustrate a wide variation from the average, resulting from different year- to-year weather patterns.
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