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NOAA-OWP / inundation-mapping

Flood inundation mapping and evaluation software configured to work with U.S. National Water Model.
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[?pt] Rating curve issue on Suwannee R. in Florida #1243

Open CarsonPruitt-NOAA opened 3 months ago

CarsonPruitt-NOAA commented 3 months ago

VLAB ticket https://vlab.noaa.gov/redmine/issues/133332

" It appears that the RFC/HAND FIM is significantly underpredicting downstream of LIKF1, which is forecast to see moderate flooding. Depicted inundation (see attached) is largely remaining confined within the channel. This continues well downstream until after the confluence with the Withlacoochee River. This may be due to a cross walking issue, or some other type of issue which is unknown at this time.

Image "

CarsonPruitt-NOAA commented 3 months ago

" The rating curves do look pretty weird in this stretch. Something that seems to be unique is the sheer number of limestone sinkholes near the channels. They are deep enough and prevalent enough that I think might be affecting our ratings in this area.

Image "

mluck commented 1 week ago

It seems like whatever the issue was, it's since been corrected. Inundation in v4.5.12.0 is not being underpredicted as in the original issue, shown below with 10-year AEP.

image
CarsonPruitt-NOAA commented 6 days ago

Can you show the reach just downstream of this? Version 4.5.2.11 is showing the above as better, but the next reach downstream still has the issue. image

mluck commented 6 days ago

10-year AEP v4.5.12.0 looks a little better. The light blue areas are added with the pit-filled REM as compared to v4.5.12.0.

image