Applying the Index…
§ DTM is necessary
l A continuous hydrologic surface is created from the
DTM
“Sinks” are removed so that hydrologic flow simulations do
not become trapped in a portion of the landscape
§ Modeling constraints
l Hydrologic flow constrained by roads
Flow paths were not allowed to cross roads in our simulations
unless…
l Culverts allowed to redirect hydrologic flow through
roads