This week we worked on an isarithmic map, using continuous tones, hypsometric tinting, and contour lines to map a dataset of annual precipitation for the State of Washington. We also created a hillshade effect.
The final map I created includes the hypsometric tinting, contour lines, and hillshade effect. We used data from the US Department of Agriculture, created by the PRISM Group at Oregon State University. PRISM is an analytical model that can interpolate datasets like the precipitation from various weather stations. In this instance, the weather data was combined with a DEM to create a dataset representing average annual rainfalls for the entire state. PRISM is an excellent tool to use for locations like Washington that have mountains because it can take into account a lot of factors about the landscape when interpolating the precipitation dataset.
This might be my favorite assignment for this class! I love looking at topography and anticipate I will use the skills I gained in my archaeological endeavors quite a bit in the future.
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