I was traveling on the west side of Ubol Ratana reservour enroute to Nong Bua Lam Phu ans wanted to check the location of the buffalo conservation area and since it was nearby to check the water level at Pattaya 2.
As you can see the water level at the reservoir is still high.
The Na Wa, Phu Wiang, Water Buffalo Conservation Center seems to take up a number of villages. I was unable to find a visitor center or anything like that though there is a statue of 2 buffalo in the town square, as well as a shrine to a notable fugitive felon.
And all locations can be viewed at the Khon Kaen Province Map