Geographic Information Systems

Area = 1842 mi2

PAVE = P1A1 + P2A2 + P3A3

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GIS is a database

- Each feature is referenced to a table using a unique ID

- Layers describe climate, elevation, soil properties, etc. were compiled for this study

GIS is a powerful tool for spatial analysis, used to:

- Delineate watersheds in the Edwards region

- Interpolate climate from 0.5° by 0.5° grid to watersheds

- Derive average soil-water holding capacities