Characterization of prairie pothole inundation using AnnAGNPS under varying management and drainage scenarios Kaleita, Amy Kaleita, Amy Soupir, Michelle Soupir, Michelle
dc.contributor.department Civil, Construction and Environmental Engineering
dc.contributor.department Agricultural and Biosystems Engineering 2021-06-10T21:12:31.000 2021-08-14T00:16:47Z 2021-08-14T00:16:47Z Fri Jan 01 00:00:00 UTC 2021 2023-06-06 2021-09-01
dc.description.abstract <p>Farmed <a href="" title="Learn more about prairie from ScienceDirect's AI-generated Topic Pages">prairie</a> potholes are small, isolated depressions frequently classified as semi-permanent <a href="" title="Learn more about wetlands from ScienceDirect's AI-generated Topic Pages">wetlands</a> that make up a significant portion of land area in the Des Moines Lobe (DML) of the larger Prairie Pothole Region (PPR). Historically, these depressions have been subjected to significant drainage to improve their agricultural capacity. However, many assessments of the economic return of continuing to farm these depressions suggest that continued attempts to produce conventional row crops is not profitable and has other ecological consequences beyond crop drownout. This study expands the existing discussion of land use and drainage alternatives in a watershed modeling context. This study utilized the Annualized Agricultural Non-Point Source (AnnAGNPS) model to individually simulate the long-term hydrology of 6 prairie potholes using a matrix of land use and drainage modifications. Results suggest the presence of artificial drainage is the dominant factor in prairie pothole hydrology, while retirement and no-till practices can provide moderate reductions in flood inundation. <a href="" title="Learn more about Conservation tillage from ScienceDirect's AI-generated Topic Pages">Conservation tillage</a> induces minimal change on flood metrics. Results show that average annual maximum inundated surface area is reduced by at most 50% across all simulations and the median annual days flooded could be reduced by 25 days, though this is less consistent when isolating high-precipitation years. Regardless of drainage status, in all scenarios there are, on average, more than two inundations events per year lasting 2–4 days. Longer events occur approximately once per year on average. Area inundation frequency curves suggest up to a 20% reduction in maximum pothole area inundated annually can be achieved at the 2-year return frequency. The availability of this data helps characterize the hydrology of farmed potholes more generally over a wide range of conditions, providing a reference for the prioritization of potholes for conservation or alternative management.</p>
dc.description.comments <p>This is a manuscript of an article published as Nahkala, Brady A., Amy L. Kaleita, and Michelle L. Soupir. "Characterization of prairie pothole inundation using AnnAGNPS under varying management and drainage scenarios." <em>Agricultural Water Management</em> 255 (2021): 107002. DOI: <a href="" target="_blank">10.1016/j.agwat.2021.107002</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/
dc.identifier.articleid 2502
dc.identifier.contextkey 23298020
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_pubs/1217
dc.language.iso en
dc.source.bitstream archive/|||Fri Jan 14 19:14:31 UTC 2022
dc.source.uri 10.1016/j.agwat.2021.107002
dc.subject.disciplines Agriculture
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.keywords Prairie Potholes
dc.subject.keywords AnnAGNPS
dc.subject.keywords Precision agriculture
dc.subject.keywords Targeted conservation
dc.subject.keywords Farmed wetlands
dc.title Characterization of prairie pothole inundation using AnnAGNPS under varying management and drainage scenarios
dc.type article
dc.type.genre article
dspace.entity.type Publication
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