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View Diary: Extreme weather boosts need for accurate flood maps. Federal response? Slash funding (35 comments)

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  •  I do not believe it can be done accurately (1+ / 0-)
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    Odysseus

    to the level of detail they claim to present without sending people to the location that is mapped. We're talking about needing to map elevations to +/- 5 feet in all three coordinates, better if possible. This could conceivably be done with satellites, but I am not aware of any earth satellites that can get this level of detail despite trees and buildings that is available for civilian use.

    Of course, since they can't do this, in the past, they looked at satellite imagery, guessed, and phoned it in. ;-)

    The other information that has to be gathered is the hydrological possibilities - the probability of rainfall per hour in every watershed for a 1% event, and what that means to every point in the watershed. For my little valley, which is small and at the top of its watershed, this is a pretty daunting calculation.

    Fry, don't be a hero! It's not covered by our health plan!

    by elfling on Mon May 27, 2013 at 05:43:35 PM PDT

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