It is incorrect, I have emailed about several gauges that are wrong on eddy flower. It goes like this:
Below Granite gauge - Pine Creek, Numbers, Fractions, BV Town, Milk Run
Nathrop - Brown's, Stone Bridge
Salida - Big Bend to Salida
Wellsville - Rincon to Parkdale
Parkdale - Royal Gorge
The readings I use are located on the website for Colorado's surface water conditions: Division
The reason for the difference in readings between Nathrop and Salida is that there is no major tributaries that feed the river in that area, but irrigation water is taken out in several places.