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6 <br /> <br />89-02-01-09.2. Evaluation of applications - Factors considered. All applications to <br />drain, must consider the following factors: <br />1. The water volume proposed to be drained and its impact upon the <br />watercourse into which it will be drained. <br /> The project outlets into the upstream end of a culvert in the Southeast corner <br /> of Section 13, the culvert crossing under 157th Ave SE and the downstream <br /> channel underwent an improvement in 2022 that lowered the culvert and <br /> channel inverts. The watershed contributing to the culvert remains unchanged <br /> under the project conditions and conveys approximately 43 cfs during a 10- <br /> year design event. As the project does not propose any changes or increases <br /> to the watershed or the crossing sizes, a notable change in volume conveyance <br /> capacity is not anticipated. Therefore, the proposed project will not have <br /> significant impacts on downstream watercourses. <br />2. Adverse effects that may occur to downstream landowners. This factor is <br />limited to the project's hydrologic effects, such as erosion, flood duration, <br />sustained flows impacts, and downstream water control device operation <br />impacts. <br /> The proposed changes along the project extents will not materially change the <br /> hydrologic characteristics of the area. Flows out of watershed are not expected <br /> to increase and downstream watercourses, the Durbin-Everest Channel that <br /> outlets into Swan Creek, have adequate conveyance capacities. <br />3. The engineering design and other physical aspects of the drain. <br /> The project consists of a regrade and cleanout of the existing roadside channel. <br /> The natural drainage channel consists of roughly a 6-foot bottom width and <br /> 4H:1V side slopes with a channel slope of 0.04%. The project’s purpose is to <br /> maintain positive drainage along the extents and remove high spots to prevent <br /> water from pooling along the channel. <br />4. The project’s impact on flooding problems in the project watershed. <br /> The current channel has an inconsistent slope with high spots that hold water <br /> during large storm events, the purpose of the project is to maintain positive <br /> drainage along the project extents and to improve conveyance of sheet flow for <br /> the purpose of agricultural production and protection of property. Thus, the <br /> project will reduce flooding impacts in the project watershed which will result in <br /> positive benefits to the project watershed. <br />5. The project’s impact on ponds, sloughs, streams, or lakes having recognized <br />fish and wildlife values. <br /> There are no ponds, sloughs, streams, or lakes along the project extents. The <br />project does not have significant impacts on aquatic or wildlife resources. <br />6. The project’s impact on agricultural lands. <br /> The main purpose of the project is to provide improved drainage for agricultural <br /> land. The drainage provided by the project will have a positive impact on <br /> agricultural lands. <br />7. Whether easements are required. <br /> The permittee is also the owner of the property and therefore additional <br /> easements are not necessary to complete construction of the project. <br />8. Other factors unique to the project.