Greece: Starting from Nymph and Becoming Stronger

Traveling through time as a Greek nymph, the river is drying up and she is dying. Fortunately, I had a PhD in environmental engineering in my previous life, so I knew about water conservancy, hydrology, and how to revive dry rivers. But there really is a God in this world. Zeus is in the sky, Poseidon is in the sea, and Thesis is watching her from the source. There is also a deep sea monster sinking under the river. It doesn't matter. She has modern knowledge, spiritual fire, and a group of strange neighbors - the nymph from the upper reaches who has lived for three hundred years, the shadow from the lower reaches that was born from the stagnant water, and a embryo of the river god that is gestating. This is the path to godhood for an unknown river. It starts with pure water and ends with reincarnation.