February 19, 2020, 09:46:59 PM

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Topics - Hartney

1
Hi all,

I have been running a model for the Pearl River LA/MS region.  The model runs smoothly but there is never any wetland change, even with 6m of SLR and no accretion values.  I have been able to run other models with parameters based on journal studies, including Pascagoula, and those models do show wetland change.  Some things I have double checked (based on answers to similar posts on this forum) include elevation data units, DEM/NWI date, and the NAVD88 to MTL conversion (based on the Bay Waveland Yacht Club, MS tidal station: https://tidesandcurrents.noaa.gov/datums.html?units=1&epoch=0&id=8747437&name=Bay+Waveland+Yacht+Club&state=MS ).  My accretion values are based on Louisiana's Coastwide Reference Monitoring System (CRMS).  What other parameters should I be looking at to fix the issue? At this point, it feels like I'm missing something obvious so I'm hoping for an extra set of eyes to help me brainstorm what the issue may be. 

Thank you!
2
Hello,

I am having an issue when I convert my study area dem to ascii.  The elevation range/values are different following the conversion (see image You cannot see attachments on this board.).  dem_censustract is my original dem while dem_asc is the new file after conversion. I found one person mention a similar issue on another gis forum but the question was unanswered. Has anyone else encountered this issue? Is there a work around?

Thank you!