This document reports a subset of results of a survey project that is focused on measuring changes in the human domain, mainly Iowa farmers’ knowledge, attitudes, and behaviors related to reduction of nutrient losses from farmland. The results presented in this document are specific to the Des Moines hydrologic unit code-6 (HUC6) watershed. The survey project, which is funded by IDALS and conducted by the ISU College of Agriculture and Life Sciences, is a five-year effort to collect data that will help stakeholders measure progress toward NRS objectives and to inform outreach and engagement strategies. The survey has three main objectives: measure farmer knowledge, attitudes, and behavior related to nutrient management and nutrient loss into waterways; identify barriers to and facilitators of behavior change that reduces nutrient loss; and measure change in these over time. The survey data will help to gauge progress toward NRS goals and help stakeholders to adjust and refine strategies for outreach and engagement activities that promote nutrient loss reduction on Iowa farms.