Lab 1 – Data Management and Model Builder

Lab 1 – Data Management and Model Builder

 

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For this assignment, we were required to construct a model using ModelBuilder to create a folder directory for our project. After creating a folder directory, we were given stream and road data for Whatcom County, Washington and were instructed to determine the number of stream and road crossings per Watershed Administrative Unit in the county. This project identifies points where streams and roads intersect within Whatcom County watersheds. Restoration efforts are being made at these points to reduce the amount of automobile runoff entering Whatcom watersheds. Restoration projects will be prioritized in those watersheds with the highest frequency of intersections. The first step of analysis was to select Whatcom county out of the Washington Counties dataset. The clip tool was then used to identify Washington watersheds falling within Whatcom County. The next step of analysis was identifying point locations where there are intersections of roads and streams; both line and polygon intersections were accounted for. Identity and frequency geoprocessing tools were used to create an output table containing the number of intersections in each watershed. Shown in the map below is Whatcom County watersheds symbolized by the number of stream-road intersections. The watersheds with the highest number of intersections are: Maple Creek – North Fork Nooksack River, Hedrick Creek – North Fork Nooksack River, Canyon Creek, Dakota Creek – Frontal Drayton Harbor, Lake Whatcom and Skookum Creek.

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Lab 1 Practical Exam

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After each in-class lab we are presented with a practical exam in which we apply what we learned in lab for that week in a take home exam. For this practical exam, we received instructions to determine the walkability of neighborhoods in Bellingham, Washington using the number of street intersections per neighborhood as our index. To run this analysis, I created a model in ModelBuilder and used the Clip, Intersect, Identity, and Frequency tools to determine the number of street intersections per neighborhood. I then created a chloropleth map symbolized using graduated colors to show the number of street intersections per neighborhood cartographically.

Click this link to view a larger image of the map

Click this link to view the Model Builder image