Hard to say for sure, but it's unlikely that the Poudre will have much water left by then. The Ark will have started flow augmentation, but this was basically a drought winter and almost all the snow has already melted, so it's not going to be high, or even a respectable medium flow either (although there is lots of fun to be had at low water...). The Taylor will be running, but at a low flow as well. The expectation is that they will continue to release 250 from Taylor Park Reservoir all summer.
III-IV options for the Ark in July include Granite, Pine Creek and Numbers. Fractions, BV town run, Browns, Parkdale and the Royal Gorge. Taylor Canyon is close, and there will be water in Shoshone near Glenwood Springs. Also Foxton on the South Platte has artificial plumbing and a good chance of flowing while your here.
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