So I guess I should correct myself. I usually consider yakima to Rosa dam upper since they call prosser to the mouth the lower. I know they don't open the Rosa to CleElum portion. Since they spawn near CleElum. I believe they truck most of the fish up from the dam to the spawning grounds. But the counts are low. They get a good average of 8 to 10 thousand fish on good years. They only expect around 4,000 fish and might not get that. They call it the Rosa slaughtfest because the fish have a hard time getting over Rosa dam and they pile up below. Everybody in yakima shows up to fish 500 ft below the dam.
