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NewGraphEnvironment / fish_passage_elk_2021_reporting

https://newgraphenvironment.github.io/fish_passage_elk_2021_reporting/
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rewrite habitat gain index section #13

Open NewGraphEnvironment opened 2 years ago

NewGraphEnvironment commented 2 years ago

right now it only discusses 22% max threshold but really we are looking at likely spawning/rearing habitat quantities.

put 15% for now but maybe we shoudl make it 8

NewGraphEnvironment commented 2 years ago

this must be addressed

For Phase 2 - habitat confirmation sites, conservative estimates of the linear quantity of habitat suitable for rearing and spawning of westslope cutthrout trout to be potentially gained by fish passage restoration, mainstem and large tributary streams (>1st order streams) segments upstream of each crossing with freshwater atlas stream layer gradients <8% and modelled at >2m wide (likely of highest value for rearing and spawning westslope cutthrout trout), below natural/manmade barriers and downstream of documented culvert barriers were measured by hand with the measure tool within QGIS [@QGIS_software]. To generate estimates of the area of habitat upstream of these sites, the length of habitat was multiplied by the upstream average channel width that was measured in the field.