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Drought Mapping of the Pedernales Watershed

Drought Mapping of the Pedernales Watershed. CE 394K.3 Term Project by Heather Davis. Population Growth: Competition for water among agricultural, industrial, commercial, and residential sectors Water availability in Texas becoming more scarce. Current Drought: Wildfires

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Drought Mapping of the Pedernales Watershed

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  1. Drought Mapping of the Pedernales Watershed CE 394K.3 Term Project by Heather Davis

  2. Population Growth: Competition for water among agricultural, industrial, commercial, and residential sectors Water availability in Texas becoming more scarce Current Drought: Wildfires Affected crops/livestock Water restrictions Project Background

  3. Drought Measure Indicators • Palmer Drought Severity Index (PDSI) • Crop Moisture Index (CDI) • Standardized Precipitation Index (SPI) • Percent of Normal • Surface Water Supply Index (SWSI)

  4. Research – How to Proceed? Available Usable Data: • National Oceanic & Atmospheric Administration – National Climatic Data Center (1895-present!) • University of Nebraska-Lincoln – US Drought Monitor Maps (1999-present)

  5. Palmer Drought Severity Index • Standardized to local climate, good for long-term prediction • Not particularly useful in calculating supplies of water locked up in snow or for short-term forecasts • Positive numbers reflect rainfall, or an abundance of available water • Negative numbers reflect drought, or a lack of available water

  6. Palmer Drought Severity Index (PDSI) • 0 – Abnormally Dry • -1 – Moderate Drought • -2 – Severe Drought • -3 – Extreme Drought • -4 – Exceptional Drought

  7. Data Source: http://droughtmonitor.unl.edu/dmshps_archive.htm

  8. Data Source: ftp://ftp.ncdc.noaa.gov/pub/data/cirs/drd964x.pdsi.txt

  9. Data Source: ftp://ftp.ncdc.noaa.gov/pub/data/cirs/drd964x.pdsi.txt

  10. Data Source: ftp://ftp.ncdc.noaa.gov/pub/data/cirs/drd964x.pdsi.txt

  11. Data Source: ftp://ftp.ncdc.noaa.gov/pub/data/cirs/drd964x.pdsi.txt

  12. 12 Week Animation • http://droughtmonitor.unl.edu/12_week.gif

  13. Work to Come • Statistical analysis of compiled data to assist in drought prediction • Development of mathematical model to predict oncoming drought

  14. Questions?

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