Dr. Keith Harmony, Range Scientist located at the Agricultural Research Center in Hays, KS discusses drought, pasture management, pasture recovery, and some tools to help determine stocking and/or destocking rates based on precipitation and forage availability.  

Some of the tools he talks about can be located at:

GrassCast https://grasscast.unl.edu/

Rangeland Analysis Platform https://rangelands.app/

Turnout Flow Chart https://www.southeast.k-state.edu/program_areas/beef_cattle/index.html