Flowing adverbs are provided in this article. The words listed here are commonly found along with the verb flowing in sentences. This reference page helps answer the question what are some adverbs that describe or modify the verb FLOWING.
actually, ceaselessly, constantly, continually, continuously, copiously
directly, easily, freely, gently, loosely, naturally
nearly, necessarily, nilly, peacefully, perpetually, properly
quietly, rapidly, really, silently, slowly, sluggishly
smoothly, softly, steadily, strongly, sweetly, swiftly
Hope this word list had the flowing adverb you were looking for. In addition to adverbs used with flowing, other example verb adverb pairings can be found on this site.
You can help by adding more adverbs in the comments. Thanks.