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Animated Flow in the non-tidal Delaware River

(This article was first published on AdventuresInData , and kindly contributed toR-bloggers)

The Delaware River experienced some high flow in late February 2016, providing an opportunity for an interesting animated graph of river response.

Animated Flow in the non-tidal Delaware River

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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