USGS Real-Time Water Data for USGS 06752260 CACHE LA POUDRE RIVER AT FORT COLLINS, CO
This link is to the Ft Collins gauge (not the canyon mouth) so I think it'll record fewer cfs than the gauge at the river mouth.
Flows above 3,000 are indeed rare (by boater standards), but you'll note the most recent really huge year (1984) peaked at more than 6,000 cfs - now that's good boating!!!
You are correct that there are diversions between the upper river (e.g., bridges) and the gauges. I think the diversions from the canyon mouth and upstream divert a maximum of about 800 cfs (but I'm not sure of this). This results in a very unreliable correlation between the cfs reading and Pineview gauge at lower levels as the diversions are turned on and off.
Originally Posted by the_dude
johng - please help me understand how there can be 3k to 4k flowing through town in "huge years" when the highest the gauge at the mouth of the canyon ever gets in most years is around 1,500 to 1,600. also, i believe there are still a few good-sized diversions between said gauge and town, so that would mean an even smaller flow through town than the reported 1,500 to 1,600. 4k would be like two arkansas rivers at peak flowing through fort collins. i sure don't see that in the summer, but maybe that's my poor memory.