FLOOD05064

• Designation Number: 205
• County: Larimer
• Community: Fort Collins
• Basin: South Platte
• Title: Master Drainageway Planning - Cooper Slough, Boxelder Creek, Fort Collins, Larimer County, Colorado
• Date: 8/1/1981
• Designation Date: 1/1/1983
• Floodplain - Doc Type: Floodplain Report/Masterplan

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Table 39. Alternative 3, Cooper Slough Reach 1 Quantity and
Cost Estimate for Channel from State Highway 14
to Boxelder Creek.

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Table 40. summary of Cost Estimates for Alternative 2
for 10-Year Design Frequency.

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Item Quantity Unit Cost
Excavation 13,360 cubic yards $ 3
Concrete 600 cubic yards 250
Fill 2,100 cubic yards 2
Seeding 106,000 square feet 0.08
Diversion
structure 1 each 2,000
Trickle channel 2,000 linear feet 34
41x12' box culvert 30 feet 600
Riprap 75 cubic yards 50
Fencing 1,000 linear feet 16
TOTAL CONSTRUCTION COST

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Engineering & contingencies (35 percent of construction cost)

Land (4 acres @ $20,000)

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Fiscal, legal and administration (5 percent of construction, engi-
neering & contingencies, & land)

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TOTAL COST

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Annual Cost: 50-year life, 7-3/8 percent

Operation and maintenance

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TOTAL ANNUAL COST

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Total
$ 40,100
150,000
4,200
8,500
2,000
68,000
lB,OOO
3,800
16,000
$292,600
102,400
80,000
23,800
$498,800
37,900
1,900
$ 39,800

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Item

Total Cost

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Channelization Cooper Slough, Reach 1

$ 790,300

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Channelization Cooper Slough, Reach 2

955,500

Pond West of Cooper Slough

950,400

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Channelization, Boxelder Creek, Reach 1

1,340,900

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TOTAL COST

$4,037,100

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Annual Cost: 50-year life, 7-3/8 percent

$ ~06,800

Operation and Maintenance

11,400

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TOTAL ANNUAL COSTS

$ 318,200

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