The only reason the dams are experiencing low water levels is because they let too much go downstream to satisfy the illegal alien populations of the southwest. Colorado is supplying plenty of water as always. The headwaters of the Colorado River is Lake Grandby, and that lake is full. Grandby is my old stomping ground. Nothing has changed there.
The population explosion of the Southwest in general has caused this but also less run off from the Rockies. I live in the high desert of Arizona but did live in SoCal for a while. SoCal was a desert before man turned it into a lush green paradise. That takes a lot of water. Around here you don’t see green grass yards like you do in SoCal. SoCal needs to get with the fact they live in the desert. Make sure the parks and zoo’s have the water they need but everything else needs to be redone in desert style landscaping.
It probably would not take a lot of weather engineering to push things just enough to cause the lack of water. We have not been getting the usual amount of rain from the monsoonal season for years.
Something else is at play. It would not surprise me one bit if the reset crowd did have a hand in it.
But Lake Granby and it's upstream waters have very little to do with the total Colorado River Basin.
This cool website - https://txpub.usgs.gov/DSS/streamer/web/ - will show you where ALL the water comes from. Zoom into Lake Powell area and then select “Upstream Trace” in the upper right, then put the cursor on Lake Powell at the area close to the dam and click. You will see every stream and river that feeds into Powell.