NOTE: Today’s guest blog post was written by water resources intern Sam Phillips. He is starting his junior year at Iowa State University in Agricultural Engineering (Land and Water Resources option). Originally from the Manchester area, Phillips is an avid and active outdoorsman!
My whole life I have had a passion for being outdoors and exploring new places. One of my favorite ways of doing this is by paddling and fishing Iowa’s rivers. This past weekend I had the opportunity to float one of my favorites, a stretch of the Yellow River starting in Volney, Iowa.
It had recently rained and when we arrived at the put-in we could tell immediately. According to the USGS it was flowing at around 425 cubic feet per second, nearly three times faster than usual this time of year. This huge influx of water had torn massive amounts of sediment from its usual place and brought it into the river. The normally clear stream now looked murky brown.
In my classes at Iowa State and over the course of this internship I have learned about sediment being the number one pollutant in Iowa’s rivers and lakes. While Iowa is rightfully known for its world class soils, that resource becomes a hindrance when it gets misplaced into our waterways. I’ve also learned about the countless conservation practices being used by farmers and other landowners. Some I knew about before, but I never really took notice until I started thinking about their functions.
While going down the Yellow I paid much closer attention to these practices. Along the banks there was riprap (essentially large rocks) to keep water from eroding away the land and buffer strips to filter out runoff. I got out at a sandbar and looked at nearby fields. There was lots of no till and conservation till to protect topsoil from rainfall. On hills in the distance there were beautiful terraces. While these couldn’t stop the river from getting dirty temporarily, they surely will help it return to its normal clarity sooner.
A single one of these practices would not be able to stop sediment from reaching the Yellow River. However, a strong combination of conservation practices from in-field to edge-of-field all the way to the riverbank can make a huge difference.
Even though the high water prevented me from catching the fish I came for, I enjoyed seeing the trip from a new perspective!