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use of GIS to assess groundwater recharge in the Texas High Plains

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research needs. methods for. estimating groundwater recharge ... Soil Survey Spatial and Tabular Data (SSURGO) climate. National Climatic Data Center (NCDC) ... – PowerPoint PPT presentation

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Title: use of GIS to assess groundwater recharge in the Texas High Plains


1
use of GIS to assess groundwater recharge in the
Texas High Plains
  • Sarah Davidson
  • GIS in Water Resources
  • Dr. David Maidment
  • November 29, 2007

2
hypothesis
  • Generally available spatial datasets can be
    used with ArcGIS to estimate the spatial
    distribution of groundwater recharge rates.

3
research needs
  • methods for
  • estimating groundwater recharge
  • characterizing groundwater systems in data-poor
    areas
  • linking land and water management

4
recharge in the High Plains
  • controlled by
  • topography
  • soils
  • vegetation
  • climate
  • land use

R P I - E - T - Ro
5
topography
  • 10-meter National Elevation Dataset (DEMs)

6
vegetation
National Agricultural Imagery Program (NAIP)
7
soils
Soil Survey Spatial and Tabular Data (SSURGO)
8
climate
National Climatic Data Center (NCDC)
9
land use
National Land Cover Dataset (NCDC)
10
future work
  • integrate point recharge estimates
  • calculate recharge volume
  • incorporate temporal variabilityand vadose zone
    thickness

11
Thanks!
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