Published January 21 2012
Diversion Discussion: Other flood control projects on Red River
Among the existing alternatives, Fargo-Moorhead’s planned diversion to the Red River would by far be the largest, most expensive flood protection project in the valley.
Here’s a look at how the current plans compare to other projects already in place along the Red River:
<•> 2010 metro-area population: 209,000 people
<•> Project: diversion channel, undergoing design and awaiting authorization and funding from Congress
<•> Capacity: 20,000 cubic feet per second, plus 39,000 acres of temporary staging and storage south of the channel to be used only during times of high water
<•> Specs: 35 miles long, about a half-mile wide, and no more than 35 feet deep
<•> Footprint: would cover about 8,000 acres, including removing about 6,900 acres of farmland from operation
<•> Level of protection: 500-year event
<•> Cost (estimated): $1.78 billion
<•> 2010 metro-area population: 753,500 people
<•> Project: Red River Floodway diversion constructed 1962-1968 and expanded 2005-2009
<•> Capacity: Originally 60,000 cfs, expanded to 140,000 cfs
<•> Specs: 30 miles long, up to 1,000 feet wide, and average depth of 30 feet
<•> Level of protection: 700-year event after expansion
<•> Cost: $63 million; expansion cost an extra $665 million
Grand Forks-East Grand Forks
<•> 2010 metro-area population: 98,000 people
<•> Project: levees, floodwalls and a 2,200-acre greenway, completed in 2007
<•> Specs: 8 miles
<•> Level of protection: 250-year event.
<•> Cost: $409 million
<•> 2010 metro-area population: 23,000
<•> Project: Minnesota-side diversion channel, completed in 2005, and permanent levee system in both cities, the final stage to be completed this year
<•> Diversion capacity: 3,500 cfs
<•> Diversion specs: 3.5 miles long, diverting the Otter Tail River to the Red
<•> Level of protection: 100- to 125-year event
<•> Cost (estimated): $62 million total: $41 million for Breckenridge and $21 million for Wahpeton
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