water murmurs over the roots of a nearby tree that stretches beneath a shallow forest stream

brook burble cascade chemical colorless creek cycle domestic environment flows fluids flux freshwater geology hydrological hydrology hydrosphere importance inorganic minerals murmurs necessary odorless petrology physics pollution power precipitation quality rainwater renewable resources rill rivulet rocks scarcity shallow shortages silky smooth stream stress substance tasteless transparent trickling vital water watercourse weathering