CE 547 - GIS in Water Resources Engineering

Alicia Paz-Solis

Spring 2006

Assignment #2 – Create a layout that tells a story about pan evaporation in New Mexico.

Evapotranspiration (ET)

Evapotranspiration is a collective term that includes water discharged to the atmosphere as a result of evaporation from the soil and surface-water bodies and as a result of plant transpiration.

EVAPORATION is the rate of liquid water transformation to vapor from open water, bare soil, or vegetation with soil beneath. (Shuttleworth, 1993).

TRANSPIRATION is the water discharged to the atmosphere as vapor from plants. (Linsley, 1982).

Pan Evaporation

Measured water loss from free water surface of class-A Evaporation Pan. A class-A pan (4ft in diameter and10 in deep) is filled with water to 8in deep and refilled when depth has fallen below 7in. The water surface level is measured daily, and the typical coefficient is 0.7.

Assignment #2 - New Mexico pan evaporation

The process to complete this assignment started by opening ArcMap and creating a new empty map. Shapefiles for Pan Evaporation in New Mexico were added. The icons representing Pan evaporation stations were labeled and their shapes changed. The Attributes table was used to create several graphs with the given data. The difficulty of separating the data used for the graphs from the data in the maps was overcome by creating a new data frame for the graphs. The layout feature was used to edit the map and the graph.

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