How can we maintain healthy river ecosystem?

How can we maintain a healthy river ecosystem? The challenge Water temperature and dissolved oxygen (DO) are both fundamentally important to the biological health of rivers, and…
Water temperature and dissolved oxygen (DO) are both fundamentally important to the biological health of rivers, and therefore to the delivery of the Water Framework Directive objectives to enhance and maintain the quality of European waters. https://www.wskep.net/index.php/waterr2b/sectors/energy/temperature-modelling/