Here's the email, looks like they did some shocking above Beaver, but maybe not on the White and Kings entering TR.
The numbers of Walleye that run into these rivers is incredible. We collected 251 Walleye per hour a couple of nights ago on the Upper White River out of the Highway 45 Bridge (Beaver Lake Twin Bridges Access). On the Kings River, we have collected over 350 per hour and see some trophy fish. Our sampling method (electrofishing) does not collect every fish. We only get a small sample of the Walleye that are there (if we collect 75 in 10 minutes, we are probably missing another 75). We cannot net fast enough to collect all the fish.
We have seen similar numbers in the White below Beaver Lake. Also, we have observed fish that were 14 lbs. These high catch rates are corresponding with the increased popularity of the Walleye fishery in the spring. Stocking at this point is not needed in these river arms and Walleye are doing very well on their own.