New St Pk Pass & Colorado Tiny 24Aug17

TStorms were in the forecast for the afternoon and I needed to update my state parks pass. Finding the nearest office was in Hot Sulphur Springs or Denver I headed north to the Colorado expecting to return to the Jurassic Pk after the storm blew through. I got the pass - what a goober interim solution vs prior sticker - paper stuck to sticky window. Anyway, that done I headed down to the CO access where I instantly came upon huge mayfly mating balls - I missed the emergence of these smallish BWOs or tricos and didn't really see rises to the spinners. Hmmm. I kept fishing on what appeared to be great water but only mustered several small rainbows like this. I split for Kremmling to grab a lunch and to the effluent of the Blue from GMR. It was sprinkling a bit as I arrived for lunch but hailed and rained over lunch then continued to storm - I bailed for home. Weak day on the river but I did check off a reminder item.