Some of the man made natural flow tanks will dry up periodically. Cattle will drain a tank then move on to another area. When it rains the tanks fill up again. Depends on how many cattle are using the area. Many ranchers went to solar wells where feasible. Some parts of New Mexico have had above average rainfall and snow for the last three years. I don’t know about the NE. Natural prairie grasses have evolved to resist drought. Too many cattle in an area can over-graze during a drought. However, pronghorn are the only prairie grazers that have evolved to eat sage. Mule deer do okay with sage. The little speed goats are short lived. When habitat conditions are favorable, there will be a higher survival rate of twins and the herd populations can recover quickly.
Handing out land owner tags is a known, failed concept. Those tags belong in the public draw. There is another way for landowner's to make money off of the pronghorn and deer that visit their land though. The landowners could sign a contract with the state to open their lands to public hunting. The ranchers could receive $5-10$ per acre per year for public hunting access only during the Pronghorn and Mule Deer seasons. That way the ranchers will have a steady annual income regardless. They actually could make more money in the long run. Putting some acres in CRP doesn’t really pay very much but open up that CRP to public hunting could be a money maker. It is a win for the hunter and the Pronghorn, Mule deer.