A sign warning of a dam upstream is seen in high waters in the Iowa River on March 8. (Ayrton Breckenridge/The Daily Iowan) Breadcrumb Home All News 5 takeaways from Iowa water quality report that points to agriculture as nitrates source Tuesday, August 5, 2025 Des Moines Register https://www.desmoinesregister.com/story/money/agriculture/2025/08/05/why-is-iow…
