01-18-2018
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18 <br /> <br /> <br />Jenny Mongeau- Clay County Commissioner <br />The commitment by Governor Dayton and Governor Burgum to help us work collectively <br />to achieve flood protection is significant. The task force had good dialog and is recommending a <br />solid set of parameters. <br />The first consensus item that task force agreed to recommend was the full period of record, <br />33,000 cfs 100 year. We also agreed to recommend allowing additional flows through town of 37- <br />foot. I believe this level is appropriate, having the ability to allow an increased flow through town of <br />up to one foot during extreme flood events should be an option outlined in an operational plan. <br />Given the previous facts of findings from the Minnesota DNR, I still have significant <br />concerns over the ability for DNR to permit a dam on the Red River. During task force discussion <br />we did not discuss modifying the proposed size of a dam, this is something that may need to be <br />looked at to make it more permittable. Location was discussed and the current alignment <br />incorporates some natural drainage into the river. An issue that I have struggled with is how the <br />percentage of physical impacts and benefits will be divided among the two states. Land that has <br />historically seen flooding during flood events are better suited areas to stage water in comparison to <br />areas that are out of the floodplain. Any plan should focus on allowing water to naturally reside in <br />lower areas. <br />In terms of how the southern embankment could be aligned in North Dakota we discussed <br />options 7A, 7B, and 7C. My recommendation is to implement a combination of options 7A and 7C. <br />Designing an embankment with limited 90-degree turns will increase structural resilience and <br />decrease overall cost. Surrounding land is within existing floodplain and keeping it as such would <br />offer reduced new impacts. The inclusion of a Western tieback was also an addition that was <br />proposed and the majority of the task force felt it would beneficial to add to the project to keep <br />water within the natural floodplain. <br />With the designed tieback levy in Minnesota a large amount of staged water will be shifted <br />onto higher ground. I have considerable concern with the amount of newly impacted properties <br />with the project. Doing so would conflict with local water ordinances in Holy Cross township and
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