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I I I I I I I I I I I I I I I I I I I would be expected to be similar to thoge at No.5. There Is no visible Indication of any stab!llty problems with No. 5 alnce It was rehabilitated In 1980 other than at the toe near the outlet as described above. No property surveys were conducted and no problems are anticipated with the reservoir boundaries due to the limited area that requires construction. A visible Inspection of the site did not reveal any special drainage problems such as those noted for No.6. The potential for siltation of the batlln above Reservoir No. II Is outlined In Section A.9. above. Reservoir NO.6 would not expected to pick up more than 76 to 100 acre-feet of slit over a 100 year period. This amount Is Insignificant compared to the reservoir capacity. C. MISCELLANEOUS ALTERNATIVES I. Inlet Ditch Control Structure. 'fhe Inlet ditch to fill Reservoir No. 5 and No. 6 Is controlled by a gated concrete structure that Is In need of repair. The gate sill Is eroded and needs to be removed and replaced. A portion of the structure floor slab Is eroded and spaJJlng and needs to be chipped out to sound concrete and repaired. The structure apparently has no upstream cutoff and water runs under the structure. A cutoff needs to be Installed and the void under the slab grouted. The structure also needs an energy dissipation device to Inhibit the downstream erosion. 2. Measuring Flume. A measuring flume should be Installed below the Inlet ditch control structure to measure the volume of water diverted out of the Poudre Valley canal Into the two reservoirs. This Is required to determine the payment to the Poudre Valley Reservoir Company from North poudre for water that runs through their ditch. The flume will also help the North Poudre ditch rider set the gates at the control structure and control the quantity of water being diverted. PAGS Ii Cblpler V - No. 6 Peuiblllty