"The river of the water of life is symbolic of a profuse and constant flow of life, of the continuous operation of the life-giving spirit of God in Christ and in all who are made one in Him. The glorified saints receive and appropriate this divine flow of life, and they also become a source of its life-giving properties for all men and all creation."
Much more in the link:
https://www.godfire.net/eby/Rev/rev248.html
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"The water is the life, the out-flowing of the Spirit. The banks are the earthen channel, the limits or direction of the flowing. The earth of your body and your life, precious friend of mine, is the channel through which the stream of God’s life flows! In nature there is water in every part of the atmosphere and in bodies of different magnitudes upon the earth, but a river is a concentrated and channeled current or stream of water. Can we not see by this that while God’s love, and life, and light enfold and embrace all things, and all people, the River of Life is that River, that special provision and flowing of GOD’S CONCENTRATED and CHANNELED LIFE, intensified and magnified in its movement and power. These currents of God’s Spirit which flow out through the people of God are the powers of heaven’s own divine life and have the wondrous ability to wash away the very power and effects of sin and death! Every saint of God should seek that the Lord would open his eyes to show him that those who drink deeply of Him become the channel by which God flows out to humanity!"