The current status is updated monthly for each well by comparing the daily mean (average) water level collected on the 15^th day of the month to the historical water-level data for that same well. The status is updated by USGS after the 15^th of each month. As an example, if the conditions map was accessed and viewed on May 4^th, the “current status” would represent conditions on April 15th. If accessed and viewed on May 17^th, the “current status” would represent conditions on May 15th.

On the conditions map below, a well shown in green (current status = High) will have a water level for the most recent month in the top 25 percent of all historical water levels for that well. A well shown in red (current status = Low) will have a current water level in the bottom 25 percent of historical water levels for that well. A well shown in blue (current status = Normal) will have a current water level in the range between low and high, representing the middle half of all the historical water levels for that well. A well shown in black (current status = Not Calculated) does not have sufficient data to produce summary statistics. The categories used to evaluate current status (high, normal, and low) were chosen to provide a historical context in which to view current ground-water conditions. They do not represent any specific regulatory limits or criteria.

Example conditions map used to illustrate features: