On 4/1/2011 11:24 AM, M∡rtin Koppenhoefer wrote:


2011/4/1 Nathan Edgars II <nerou...@gmail.com <mailto:nerou...@gmail.com>>
    
http://my.sfwmd.gov/portal/page/portal/xrepository/sfwmd_repository_pdf/lake_management_area_descriptions.pdf
    "The smaller S-58 water control structure located at the north end
    of Trout Lake generally acts as the drainage divide for flows
    through the KCOL. This is the case except under very high water
    conditions when water can be released northward through the C-32C
    Canal into the Lake Preston, Myrtle, and Joel LMA."



not sure if this is a case for common waterways (or if it is another
type), but sounds as if it were and if you needed 2 waterways to model
this (one for the standard, and one for the high water conditions when
water is released into another direction, if I get this right (sounds
like an overfall).

No, it's the same canal, with water flowing the other direction. This is the S-58 structure: http://www.openstreetmap.org/?node=944499871 There is normally no flow through S-58, so what little water enters the C-32C Canal south of it flows into Trout Lake. But during high water conditions, water flows north out of Trout Lake, through S-58.

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