The Diversion Authority constantly claims that there are no alternatives for the Fargo -Moorhead area plan. The Corps documents give a different story. The use of the EERC’s Waffle plan was rejected.
2.5.2 Effectiveness (View Excerpt)
According to EERC’s final report for the Waffle Project.
”The study found that flood stages in Fargo-Moorhead during the 1997 flood (nearly a 1-percent chance flood event) could have been reduced by 3.3 to 4.4 feet if the Waffle Project had been in place.”
The Corps document does not challenge the 3.3 to 4.4 foot reduction except to say
“This alternative would have a low level of effectiveness.”
The document does not say why 3-4 foot reduction has a “low level of effectiveness.”
2.5.11 Recommendation (View Excerpt)
“Flood storage should no longer be considered as a stand-alone alternative for the Fargo-Moorhead area. The flood storage concept should be retained for possible implementation to mitigate for any adverse impacts of other plans or where it can be otherwise incrementally justified.”
“The local communities should continue to seek opportunities for storage in the basin.”
“The flood storage concept should be retained for possible implementation to mitigate for any adverse impacts of other plans”
These adverse impacts are staging (flooding out others).
Fargo chose not to consider using the Waffle plan to reduce staging.
“The Waffle concept, as described in the report, does not fit any existing Corps of Engineers implementation authorities.“
So they cannot consider it as they cannot implement it themselves.
These are not reasons to reject the implementation of a combination plan of the Waffle plan, with higher in town flows, improved gate controls and off stream distributed storage. If these alternatives were used in a combination of measures we would be closer to reducing the flood risk for everybody.