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About Brush CO Alternatives Analysis
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Winter 2017
Spring 2018
Summer 2018
Alternative | Benifits | Impacts | Cost elements |
---|---|---|---|
1: Detention
At a location approximately three miles north of the Morgan County Line and east of SH 71 just south of County Road D, a potential reservoir will be sized. This location was chosen after a brief investigation of topographic data in the area. AECOM will calculate the ability to detain the 100-year event, and will comment on the reservoir’s classification per the Office of the State Engineer’s requirements and additional design requirements.
|
Reduces flooding potential in Brush
Possible storage of water for agricultural or recreational uses
|
Reservoir inundation limits would cover six or more square miles of existing active farmland and insurable structures on eleven properties |
4 mile dam, with minimum dam height 34 feet at highest point
Spillway must carry the Probable Maximum Flood
Substantial property acquisition and resident relocation from 11 properties required
|
2: Channelization
Channelization will be analyzed without embankment modifications. AECOM will attempt to reduce flood considerations by increasing channel capacity for a portion of Beaver Creek. The channelization alternative without embankment modification will require bridge replacements at County Road S, two BNSF Bridges, at SH 34, and at I-76.
|
Reduces flooding potential in Brush | Substantial excavation and widening of Beaver Creek and bridges over Beaver Creek |
Construct 1.8 miles of channel improvements and expand capacity of County Road 29 Bridge, 2 BNSF Bridges, and the SH 71 Bridge
Right of way acquisitions needed to allow for substantial bridge widenings and channel widenings
|
3: Levee
Approximately 2.8 miles of levee will be modeled to prevent inundation of downtown Brush north of the Burlington Northern Santa Fe Railroad (BNSF) Rail Bridge. This levee could also offer an opportunity for a recreational trail. AECOM will comment on the probability of certifying the levees to meet 44 Code of Federal Regulations Part 65.10 (44 CFR 65.10) given the railroad tie-ins and construction costs.
|
Reduces flooding potential in Brush
Provides Beaver Creek Trail
|
Raised water surface elevations for commercial properties east of the BNSF Rail alignment |
Construct 2.8 mile levee
Raise County Road S, BNSF, County Road R, and SH 34 to Cross over Levee
|
4: Combination
Based on preliminary findings of effectiveness of alternatives 1 to 3, AECOM will prepare a fourth alternative combining the more cost effective elements of options 1 to 3.
|
TBD | TBD | TBD |