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All News and Pages Related to "Des Moines River"

This is why we can’t have nice things

Posted on May 30th, 2019

You may have heard that our country’s administration is in a trade dispute with China. The US has imposed tariffs of 10 to 50% on a variety of Chinese goods including steel, aluminum, solar panels and clothes washing machines. China responded by imposing a 25% tariff on US soybeans and some other US products. China […]

Drain Baby Drain

Posted on May 8th, 2019

The Landscape of Capitalism by former University of Iowa professor Robert F. Sayre (1933-2014; also, his is the featured image for the post) is an excellent short history of Iowa agriculture. I read Sayre’s essay many years ago and had all but forgotten it, but it was restored to my memory recently by a conversation […]

This is what happened

Posted on February 12th, 2019

This is What Happened (Note: the nitrate value for the Des Moines River at Des Moines was changed from 5.0 in the original posting to 3.6, based on information I received from a colleague at the University of Illinois.) Many people are curious about Iowa stream nitrate before modern agriculture became established across the landscape. They want […]

Iowa Stream Nitrate 2017: Des Moines River

Posted on July 6th, 2018

Over the next few weeks I am going to post 2017 nitrate data summaries for many Iowa watersheds. These summaries are an aggregation of IIHR and USGS water quality sensor data, Iowa DNR ambient monitoring data, and USGS discharge data. Most of this data is in the metric system, sorry if that isn’t your thing. A key […]

Raccoon and Des Moines River Nitrate: 2017 overview

Posted on April 13th, 2018

Clear back in February of 2017 I wrote this in a blog post: “January is only one of 12 months, but in fact it is not a bad predictor of where the annual average Raccoon River nitrate will settle 11 months from now. This January, nitrate levels have averaged about 6.7 mg/L. When January nitrate was between […]

April Historical Nitrate: Raccoon and Des Moines Rivers

Posted on June 8th, 2017

  Just posting some graphs of recent data here of the last two months and historical perspective.            

January and February nitrate loads: Raccoon and Des Moines Rivers

Posted on March 6th, 2017

Raccoon & D.M. River Nitrate: Historical Nuggets

Posted on February 12th, 2017

My detailed data sets for the Raccoon and Des Moines Rivers at Des Moines go back to 1974 and 1982, respectively. Here are some interesting nuggets from that data:   Largest Nitrate-N Loading Years Raccoon Des Moines year N Load (kg) Year N Load (kg) 2015 47,456,365 1991 68,891,857 1993 36,559,570 2016 65,197,500 1991 35,032,826 […]

November Nitrate, Raccoon and Des Moines Rivers

Posted on December 5th, 2016

This year the story continues to be the large loading on the Des Moines River. There is an outside shot that 2016 will be the largest year ever for N loads on the Des Moines. However cold weather in the forecast will likely result in 1991 continuing to be the largest, followed by 2016 and then […]

Raccoon and Des Moines River Nitrate: October and YTD (10/31)

Posted on December 3rd, 2016

A little late with this, but October summaries here. Looks like this year the story is going to be the Des Moines River. I will be looking at some discharge and rainfall data for this basin soon.