Does anybody understand the differences between the Tables on pg. 10 of the Technical Manual and Pg.14 of the Users Manual. They seem to contradict each other when I plug in my values to the framework.
Ex. Technical Manual (pg.10): Reg.Flooded Marsh, min.Elev = MTL and max.Elev = Ave(MHHW, SB), My data = 0 and 1.385
Users Guide (Elevation Analysis, Pg 14): Reg.Flood.Marsh, min.Elev = 0 Meters (MTL) and max Elev. = 1.2 HTU, my data = 0 and 1.3992
Is this because the Technical Manual is referring to a different rule set for the wetlands presented in table 2 (pg 10) when there is water present at the upper end of the wetland?
Thanks for clarification!
Thanks for this inciteful question:
The original (SLAMM5) conceptual-model formulation was the half-way point between MHHW and MTL based on evaluation of various LiDAR data sets. This was "hard-wired" into the model code.
Within SLAMM6 the conceptual model for elevation ranges is flexible. However, the "half-way-point" between two elevations is not one of the input options. The conceptual model must be specified in meters, or as a function of the tide range (GT or Salt Bound). For this reason, we set the boundary to 1.2 HTU (or 120% of MHHW) which is, as your analysis shows, usually essentially the same as the half-way point between MHHW and the "salt boundary."
However, I missed making this update to the Technical Documentation on Page 10. I have fixed that now and it will be part of the next draft release later this month. Sorry about the confusion.