A Study of the Relationship between Groundwater Levels and Precipitation in Volusia County, FL By: Thomas Freeman.

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Presentation transcript:

A Study of the Relationship between Groundwater Levels and Precipitation in Volusia County, FL By: Thomas Freeman

Objectives Obtain data for Volusia County Input data into useable form in GIS Analyze data Attempt to correlate groundwater levels and precipitation levels

Volusia County

Data 33 USGS wells Precipitation data from PRISM

Well Data Taken from USGS Groundwater Watch site Manually input into spreadsheet Added to GIS and converted to XY data Kriging method used to interpret groundwater levels in county

Water Levels 2000

Water Levels 2004

Water Levels 2010

Precipitation Data Downloaded annual data (2000-2010) for US from PRISM Exported into ArcGIS Converted to raster Map algebra to get data in inches

Precipitation Levels 2000

Precipitation Levels 2001

Precipitation Levels 2006

Precipitation Levels 2010

Initial Observations and Further Work Precipitation levels show little correlation with groundwater levels Other factors affecting groundwater levels Refine analysis

Sources USGS Groundwater Watch PRISM SJRWMD

Questions?