Hydronefrosis. Right kidney in future?

I am 25 now. My left kidney is 85% inactive.small and Moderet hydronefrosis. Right kidney is fully active normal size and modert hydronephrosis seen through out last 6 years in several check up.in ultrasound, dpt.scan. Uria Creatine also normal. No protein in urine. 6 years ago post void urine is 180 ml. But now it is 60 ml. 60 ml post void is normal? Such hydronephrosis is harmful for my right kidney? No vur no blockage seen in right one. When i got MCU and other test done 6 yers ago.Now every year i done ultrasonud and uria Creatine for cheak up Bt hydronephrosis is not reduce.it is constant neither reduce nor increased.and post void is 60 ml now. Such hydronephrosis is normal for my right kidney in future? And 60 ml post void. ??I take dynapres 0.4.mg and listen 50 daily..as per my urologist.My bp 135/85..please sir tell my problem.i am worrid for future of the prblem