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<br />OJj545 <br /> <br />Advantages <br /> <br />Mornine <br /> <br />1. Low dam for large capacity <br />reservoir <br />2. Large surface area and shoreline <br />for recreation <br />3. Good relocation route for U.S. <br />Highway 550 <br /> <br />DlsadvnntnRC& <br /> <br />Axis <br />1. Dike required on Dallas Creek <br />2. Pervious dam foundation requiring <br />extensive leakage prevention treatQcnt <br />3. Inundation of Ridg~ay and 2,000 acres <br />of irrlg~tcd lands <br />4. Mud flats at upper cnd of reservoir <br />during drawdown <br />5. Relocation required for Hvys 550, 62 & 23 <br />6. H1gh GeCp3ge and evaporation lOG~eG <br />7. Long feeder canal from Cow Creek <br />8. Higher construction cost than for other <br />axes <br /> <br />Dallas Confluence Axis <br />1. Higher dam required than for Moraine <br />axis <br />2. Poor foundation of pervious gravels <br />3. Inundation of Ridgway and 2.200 acres <br />of irrigated landG <br />4. Mud fl~ts at upper end during drawdow~ <br />}. Relocation required for Hwys ~50.62 & 23- <br />longer. more expensive relocation routes <br />6. High Geepage and evaporation losses <br />7. Long feeder canal fro~ Cow Creek <br />8. Higher construction cOSt than Alkali or <br />Cow Creek axes <br /> <br />1. EliQinateG Dallas dike <br />2. Greater surface area and <br />shoreline for recreatioQ <br />3. Lover construction CO&t tban <br />Moraine axie <br /> <br />Alkali <br />1. Fair daQ foundation conditions <br />2. Would not inundate Ridgvay <br />3. Only small mud flat area during <br />dravdown <br />4. Fair relocation route for Hvy SSO <br />S. Relocation of Hwys 62 & 23 not <br />required <br />6. Lov seepage and evaporation losscs <br />7. Short feeder canal from Cow Creek <br />8. Lower construction cost tban ~4raine <br />or Confluence axes <br /> <br />Cow Creek <br />1. Smaller dam volu~c than Alkali axle <br />2. Fair dam foundation conditions <br />3. Would not inundate Ridgway <br />4. Only small mud flat area during <br />drawdown <br />S. Hwy 62 and 23 relocation not <br />required <br />6. Lov seepage and cvaporation losscs <br />7. Eliminates Co~ Creek Feeder Canal <br />8. Lower construction cost than t~raine <br />or Confluence axes <br /> <br />Creek Axis <br />1. Higher dam required than for Moraine <br />or Confluence axes <br />2. Greater dam volume required than for <br />other axes <br />3. Inundates about 500 acres of irrigated <br />lands <br />4. Smaller 6urface area and recreation <br />potential than ~~ralne and Confluence <br />axes <br /> <br />Axis <br />1. Higher dac than at Moraine and <br />Confluence axes <br />2. InundateG about 600 acres of irrigated <br />land including land along Cow Creek <br />3. Smaller Gurface area and recreation <br />potential than ~~raine and Confluence <br />axes <br />4. Expensive relocation for U.S. H~y 550 <br /> <br />j <br />