Sep 25, 2013

One swamp, many hydrographs

was recently informed that most people don't know how to read hydrographs.

Looking for something simpler, I thus invented this:

This "We Are HERE" chart provides a quick overview of current water levels in Big Cypress National Preserve relative to a month ago, a year ago, and the long term norm for September 25th.


Regardless, I still have a soft spot in my heart for a traditional hydrograph,

Especially for looking back a couple months and years.

This "traditional hydrograph" gives you a three year overview of water levels in Big Cypress Nat'l Preserve relative to the 25-year statistical record and major eco-hydrologic habitat types. The dotted white line shows the long-term median water level.  Notice how deep water levels dropped in Spring 2011.  Current water levels are almost 4 feet higher than that severe drought mode.


And who doesn't like digging into the historic record?

I'm a huge aficionado of studying decadal trends.

This "calendar chart" provides the full historical period of record of surface water flooding in Big Cypress Nat'l Preserve, from 1991 to present, relative to major eco-hydrological habitat types.  The dark blue bands are when water levels are highest, i.e. sheetflow season, and the orange and blank color coding indicate drought times of the year.  Thus, you can compare the current year (i.e. bottom horizontal line) to previous years and decades.  Can you see how this summer has been the wettest year since 2005?

I doubt that there's a single hydrograph that covers every base.

(Not that I'll keep from trying to find it.)

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