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FLOOD03476
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Last modified
1/25/2010 6:27:24 PM
Creation date
10/4/2006 11:48:13 PM
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Template:
Floodplain Documents
County
Mesa
Community
Grand Junction
Basin
Gunnison
Title
Grand Junction Flood Control Project
Date
3/14/1985
Prepared For
Grand Junction
Prepared By
CWCB
Floodplain - Doc Type
Project
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<br />Reach 5 <br /> <br />Extensive erosion has occurred along the lert (south) bank or the <br />river along the Audubon and Connected Lakes Park property, which <br />is threatening to wash away physical improvements to these <br />properties. It is proposed to stabilize this bank ror a distance <br />of 2800 reet using large rip-rap. Also a road wil I be raised 50 <br />Feet more or less back From the top of the river bank to protect <br />this area From a 10-year rlooding event. The design will Fix <br />the river at its present alignment and conFiguation. <br /> <br />Reach 6 <br /> <br />The present river bank in this area was originally part or a <br />gravel pit. The dike to this pit was breached by the 1983 Flood <br />causing extensive Flooding of homes on the south side or the <br />river. During the 1984 Flood, three power poles at this location <br />washed into the river. The proposal is to rip-rap this point <br />with large rock to prevent Further erosion. The rip-'rap wi 11 <br />stabilize the bank and provide permanent protection to a power <br />line and several private residences. <br /> <br />~~OJleT COlT EITIMATEI <br /> <br />1. Channel cleaning <br /> <br />station 382.50 to station 383.10 <br /> <br />Volume: <br />Cost: <br /> <br />2400' X 125' X 6' divided by 27 = <br />67,000 @ $2.50 cu yds <br />Total reach improvement cost <br /> <br />67,000 cU.yds <br />= $167,500.00 <br />167,500.00 <br /> <br />= <br /> <br />2. Rock jetties <br /> <br />station 382.60 to station 383.00 <br /> <br />I] jetties <br /> <br />4-Type A <br /> Rock = 242 cu yds @ $18 cu yd = $ 4,356.00 <br />Cut & F'i 11 " 119 cu yds @ $2.50 cu yd = 298.00 <br /> Unit total X 4 = $18,6]6.00 <br />7-Type B <br /> Rock = 255 cu yds @ $18 cu yd = $ 4,590.00 <br />Cut & Fi 11 = 89 cu yds @ $2.50 cu yd = 225.00 <br /> Unit total X 7 = $33,705.00 <br /> TOTAL REACH IMPROVEMENT COST $52,321.00 <br />
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