I think the orange markings all over the new lower section is where drainage will be added/improved after watching it over the winter.
Down lower, after the bridge that is still incomplete, I think they are trying to figure out the best way through that swamp and possibily stuck negotiating permanent access over the pipeline. Only reason I can think that the delay in completing would be so long.
Looks like Nicole's has had some recent work and maybe a bit of touching up on Lower Snake. Trail fairies or Burnaby? I'm guessing trail fairies. Mel's has had the drains cleared. Upper GJ needs some standard maintenance by Burnaby. Just the clearing of all drainage channels and restructuring some edges. Nothing big, just normal spring maintenance, but doesn't seem to be happening.
And I see deer often. But i ride up pretty early.