Articles from January 2017

A snowy field covered in footprints

Is January river nitrate a predictor for the entire year?

Monday, January 30, 2017
When January nitrate was between 6 and 8 mg/L in the period of 1974-2016, annual nitrate ended up between 4.7 and 8.5, a much tighter window than the entire range of observed annual averages (0.6 to 11.7 mg/L). The overall long term annual average is 6.6 mg/L. Based on this I am predicting a below average-to-average year for Raccoon River nitrate.
Areal photo of a river

Summary of 2016 Nitrate: Raccoon and Des Moines Rivers: Corrected 2016 Loads

Friday, January 6, 2017
Summary of the 2016 Nitrate loads in the Des Moines and Raccoon Rivers.
A man walks through a flooded field

Climate change and stream nitrate

Sunday, January 1, 2017
If Iowa continues to get wetter, which many climate experts predict, relatively modest increases in precipitation could result in disproportionately large increases in nitrate-N loads.