The effect of wildfires on water quality from watershed systems of southern california
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The Effect of Wildfires on Water Quality from Watershed Systems of Southern California. Presented to CE 394K.3 GIS in Water Resources Carolina B. Mendez November 16, 2010. www.americanobserver.net. Wildfires. Increased erosion Mobilization of particle-bound contaminants

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The Effect of Wildfires on Water Quality from Watershed Systems of Southern California

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The effect of wildfires on water quality from watershed systems of southern california

The Effect of Wildfires on Water Quality from Watershed Systems of Southern California

Presented to CE 394K.3 GIS in Water Resources

Carolina B. Mendez

November 16, 2010

www.americanobserver.net


Wildfires

Wildfires

  • Increased erosion

  • Mobilization of particle-bound

    contaminants

  • Post-fire: watershed recovers

  • Accumulation of mercury observed 1 year after fire; mobilization of mercury noted during second season.

    (Burke et al., 2010)

www.map.sdsu.edu


Objective

Objective

Use GIS tools to investigate the effect of wildfires on water quality from a watershed system in Southern California

  • USGS and USEPA data

  • CUAHSI HydroDesktop

  • ArcMap


The effect of wildfires on water quality from watershed systems of southern california

Fires in San Diego County


Mercury

Water quality: 1910 to 2010

Atrazine

Total Organic Carbon

Mercury

Copper

Lead

Arsenic


The effect of wildfires on water quality from watershed systems of southern california

Water quality: 1960 to 2010

Atrazine

Total Organic Carbon

Mercury

Copper

Lead

Arsenic


The effect of wildfires on water quality from watershed systems of southern california

Water quality: 1980 to 2010

Atrazine

Total Organic Carbon

Mercury

Copper

Lead

Arsenic


The effect of wildfires on water quality from watershed systems of southern california

Water quality: 1990 to 2010

Atrazine

Total Organic Carbon

Mercury

Copper

Lead

Arsenic


The effect of wildfires on water quality from watershed systems of southern california

1980-2010 or 1990-2010 data set?

Total Organic Carbon

Mercury

1980-2010

1980-2010

1990-2010

1990-2010


The effect of wildfires on water quality from watershed systems of southern california

Attribute tables

Fire Data

Water Quality Data


The effect of wildfires on water quality from watershed systems of southern california

To-do List

  • Choose 1980-2010 or 1990-2010 data set

  • Locate watershed in San Diego County

  • Choose upstream and downstream gages

  • Correlate fire event to water quality data


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