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I I I I I II I I I I I I I I I I I I , II I Table 1. Weighted Implementation Scores PROJECT AND COMPONENTS WEIGHTED RECOMMENDED ORDER SCORE OF IMPLEMENTATION PROJECT COMPONENT PAWNEE CREEK 80 I Flood Wall and Levees Downstream ofHWY 6 53 I HWY 6 Crossing 50 2 Ring Levees 63 3 Overflow levees 54 3 PIONEER PARK DAM AND OUTFALL 74 2 CHANNEL Dam 73 I Outfall Channel 63 2 PIONEER DITCH 70 3 Channel Improvements at Sidney Avenue 39 7 North Division Detention Pond 71 I Channel Realignment 44 6 HWY 14 Crossing 56 2 Bridge Upstream ofHWY 14 47 5 Phelps Street Crossing 50 3 BNRR Crossing 50 4 Pawnee Creek: This project ranked highest among the three proposals because it provides a relatively large benefit for the cost. In addition, the project can be phased if funding is not available to complete the entire project at once. The project elements received scores ranging from 53 to 63 with the ring levees taking the highest score because of the relatively low cost. The other three components of the project received scores differing only by 4 points which suggests, that based on the factors considered, they are all important components of the overall project. In general, it makes the most sense to construct drainage improvements from downstream to upstream. The Pawnee Creek project is no exception because upstream improvements will increase flows in the lower reaches. If improvements have not been completed in the lower reaches to properly convey the increased discharges, then flooding conditions can be made worse, Therefore, it is recommended that the Pawnee Creek project be constructed starting at its downstream limit. If funds are not available to complete the entire project at one time then the project can separated into the following phases and constructed in the following order: 1. Floodwall 2. Levees Downstream ofHWY 6 3, HWY 6 Crossings and Drop Structure 4. Ring Levees and Levees Upstream ofHWY 6 11