Example conditions map used to illustrate features:

The blue line with the silver-looking dots represents the depth to water in the well during the past 48-month (4-year) period. The dots show the water level on the 15 tth day of each month. Missing dots indicate the data for the month are not available.

The three color bands (green, red, and blue) represent historical conditions of “Normal” (blue), “High” or above normal (green), and “Low” or below normal (red) water levels as determined from statistical analysis of all the water-level data for a well. “High” conditions are the water levels in the upper 25 percent of the historical data. “Low” conditions are the water levels in the bottom 25 percent of the historical data. “Normal” conditions are the water levels in the middle 50 percent of the historical data.

Typically, water levels fall during the spring through the summer months and rise in the autumn and winter months. This annual cycle of falling and rising water levels leads to the wave pattern in the colored bands shown in the graph above. This pattern should be apparent for most wells.

Each well in the conditions network has a different set of statistics and colored bands. The width and orientation of the color bands, along with the annual pattern of rising and falling water levels, may vary from well to well. Some wells have insufficient data to compute the statistics and no colored bands are shown on the 4-year graph.