Assignment 4

Delineation of the Rio Puerco Watershed

To accomplish this assignment I had to create several sets of roster data. Following the steps given I took the interchange files and created a mosaic raster file.

Using the raster Calculator I was able to find the flow direction for the streams. Again with the calculator I was able to take this farther and find the flow accumulation.

With this new layer I used the stream to feature and streamlink tools under the hydrology category in the toolbox. To define the outlets I found the zonal max’s using the accumulation and stream network layers. The finishing steps where to divide up the watersheds using the flow direction and outlets layers in the raster calculator. According to the directions the final area should be divided up into 53 watersheds. I was unable to figure out how to come up with this number. The map below is divided into 786 separate watersheds.

Delineation of the Rio Puerco watersheds Rio Puerco Rio Grande Sandia Mountains

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