# Animated Flow in the non-tidal Delaware River

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The Delaware River experienced some high flow in late February 2016, providing an opportunity for an interesting animated graph of river response.**AdventuresInData**, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here)Want to share your content on R-bloggers? click here if you have a blog, or here if you don't.

This plot was developed using data from the USGS NWIS system for gauges on the Delaware River, retrieved with the excellent dataRetrieval library for R from USGS and the also great animation library. The plot shows the discharge per drainage area (cfs/square mile) responding to rainfall. Tributaries cause unequal response initially, but then the entire system settles into a flow wave rolling downstream. Most gauges report discharge directly, but discharge was estimated for a few stage-only gauges using local stage-discharge relationships. The concept here is the same as older posts looking at the impact of hurricane Irene and super storm Sandy, but using R to generate an easily portable GIF file.

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