Articles by AdventuresInData

A Year in Flow

January 8, 2020 | 0 Comments

Revisiting the river flow profile plot from an earlier post, the video below loops each day's flow profile for the Delaware River in 2019.  Data is from USGS gages processed using R and Windows Live Movie Maker. [Read more...]

Animated River Flow Revisited

October 12, 2018 | 0 Comments

My prior post on animated flow in the Delaware River contained the last work I performed on my previous lap top just before it gave up the ghost.  When a colleague asked me to share it, I was distressed to realize that the script was lost.  I decided to recreate ...
[Read more...]

Animated River Flow Revisited

October 12, 2018 | 0 Comments

My prior post on animated flow in the Delaware River contained the last work I performed on my previous lap top just before it gave up the ghost.  When a colleague asked me to share it, I was distressed to realize that the script was lost.  I decided to recreate ...
[Read more...]

50 years of Delaware Estuary Dissolved Oxygen

May 16, 2018 | 0 Comments

The Delaware River Basin Commission's Delaware Estuary water quality monitoring program, which was initiated in 1967, is one of the longest running monitoring programs in the world.  One advantage of such a long data set is that we can see the cha...
[Read more...]

Hurricane Irene at the Delaware Estuary Revisited

August 12, 2017 | 0 Comments

Back in August 2011, Hurricane Irene struck the mid-Atlantic coast.  This animated graph shows how the storm surge from Irene and the terrestrial flooding from Irene and Tropical Storm Lee (a few days later) impacted water surface elevations in the Delaware Estuary.This post is the third in a series revisiting ...
[Read more...]

Playing with the US Population

August 6, 2017 | 0 Comments

Here's an app that illustrates how fertility and death rates impact the US age structure diagram over time.  The app uses a simple population model to forecast the US age structure in 100 years, starting from 2010 census data and user-selected fertility and death rates.You can find and play with the ...
[Read more...]

Superstorm Sandy at the Delaware Estuary Revisited

June 17, 2017 | 0 Comments

Continuing on the theme of updating older visualizations into newer formats, below is a clip of the impact of Superstorm Sandy on Delaware Estuary water surface elevations.  The original MS Excel and screen capture version is posted here.  The new version developed in R with the animation package is cleaner ...
[Read more...]

Superstorm Sandy at Barnegat Bay Revisted

June 11, 2017 | 0 Comments

Animations of continuous data in GIF format offer some portability advantages over video files.  A few years ago, shortly after Superstorm Sandy, a colleague and I developed a video of animated water surface elevations from USGS gages in Barnegat Bay, NJ as the eye of the storm approached.  That version ...
[Read more...]

Delaware River Water Quality Visualization App

January 10, 2017 | 0 Comments

The Delaware River Basin Commission (DRBC) just released a new app for visualizing water quality in the Delaware River Basin.  The DRBC Special Protection Waters Monitoring Program Explorer is a Shiny app that allows users to generate a boxplot and summary table of selected water quality data. The boxplot and ...
[Read more...]

Effluent Nutrient Concentrations by Waste Water Treatment Type: A Shiny App

August 12, 2016 | 0 Comments

In 2014, EPA documented the relative lack of nutrient data from waste water treatment plant effluents, even though development of surface water quality standards for nitrogen and phosphorus has been a stated priority for more than a decade.   A new shiny app lets users explore effluent nutrient concentrations from an existing ...
[Read more...]

Monte Carlo Analysis of Manning’s Equation: A Shiny App

July 20, 2016 | 0 Comments

Monte Carlo analysis is a great way to explore the impact of input variable uncertainty on the results of engineering equations, and with vector variables and distribution and sampling functions at its core, R is a natural platform for this analysis. During a recent rainy vacation, I built a Shiny ...
[Read more...]

Monte Carlo Analysis of Manning’s Equation: A Shiny App

July 20, 2016 | 0 Comments

Monte Carlo analysis is a great way to explore the impact of input variable uncertainty on the results of engineering equations, and with vector variables and distribution and sampling functions at its core, R is a natural platform for this analysis. During a recent rainy vacation, I built a Shiny ...
[Read more...]

Box Plot as Goal Post

May 7, 2016 | 0 Comments

For as long as I have been working with water data, I wanted to construct a line graph superimposed on a box and whisker plot where the boxes show the distribution of values and the line shows some current condition.  One of my favorite things abo...
[Read more...]

Box Plot as Goal Post

May 7, 2016 | 0 Comments

For as long as I have been working with water data, I wanted to construct a line graph superimposed on a box and whisker plot where the boxes show the distribution of values and the line shows some current condition.  One of my favorite things about ggplot2 is that it ...
[Read more...]

Blow Out Tide in the Delaware Estuary

April 5, 2016 | 0 Comments

High winds in the Delaware Estuary region caused a "blowout" tide in early April 2016, where observed water surface elevations were much lower than those predicted via harmonic constituents.  Extreme low blowout tides can hamper navigation due ins...
[Read more...]

Blow Out Tide in the Delaware Estuary

April 5, 2016 | 0 Comments

High winds in the Delaware Estuary region caused a "blowout" tide in early April 2016, where observed water surface elevations were much lower than those predicted via harmonic constituents.  Extreme low blowout tides can hamper navigation due insufficient depth.This animated graph was created in R using data obtained from the ...
[Read more...]

Animated Flow in the non-tidal Delaware River

March 27, 2016 | 0 Comments

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

Animated Flow in the non-tidal Delaware River

March 27, 2016 | 0 Comments

The Delaware River experienced some high flow in late February 2016, providing an opportunity for an interesting animated graph of river response.This plot was developed using data from the USGS NWIS system for gauges on the Delaware River, retrieved w...
[Read more...]
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