FEMA Zone A (thread162-108813)
FEMA Zone A (thread162-108813)
(OP)
I have a similar situation as the above-referenced thread (a FEMA Zone A floodplain shows up on a stormwater swale through a farmer's field with a relatively small upstream drainage area). We want to develop the property and simply pipe the flow through it. Does anyone know why FEMA would include a stormwater swale in a floodplain? There are no tailwater issues as far as I know.
Would there be an easier, more "common sense" way to get the floodplain revised given the situation other than the usual LOMR process??? Even if I do a detailed analysis and show what the 100 year flows and BFE would be in the swale, I would argue that it would not belong on a FEMA FIRM map since it's only a stormwater swale. Any thoughts?
Would there be an easier, more "common sense" way to get the floodplain revised given the situation other than the usual LOMR process??? Even if I do a detailed analysis and show what the 100 year flows and BFE would be in the swale, I would argue that it would not belong on a FEMA FIRM map since it's only a stormwater swale. Any thoughts?





RE: FEMA Zone A (thread162-108813)
An interesting side note, the County (who in this case is the designated community official) did not want to sign off on the concurrence form, but FEMA said that I could submit the forms anyway. Since there is no floodway involved, the County's concurrence probably won't be necessary.
RE: FEMA Zone A (thread162-108813)
Where is the reference?
RE: FEMA Zone A (thread162-108813)
In doing some other research I noticed that the CFR Section 701.5 "Office of Surface Mining Reclamation and Enforcement, Department of the Interior" defines an intermittent stream as one that drains a watershed of at least one square mile. I know this is not directly related to FEMA but perhaps FEMA has a similar view that any watercourse that drains less than one square mile would not even be classified as an intermittent stream and should not be studied by FEMA. We'll see...