Using a text file that is located online ([url removed, login to view]), display today's lake level recording. Comparing two values, the user will then be able to select the number of days the lake level has changed. They may want to see the lake level difference from the past 3, 7, or 30 days using a pulldown menu. Depending on the cost/timing/budget I may also want the entire year, and possibly previous years data, in a chart. Example here ([url removed, login to view]).