“Juturna’s themes are fire, water, fate, divination, protection and balance. Her symbols are fire, water and fountains. During the festival of Vulcan (the god of fire and the forge), Romans wisely invoked Juturna, a fountain Goddess, to keep fire from damaging the land or homes. On another level, we can call upon Her to put out emotional fires that have gotten out of control.
Historically, Vulcanalia was a time to divine using the smoke from incense (then put out the fire with Juturna’s water). Choose your incense so it matches your question: rose or jasmine for love, mint for money-related matters, vanilla for health. The smoke may respond by creating a symbolic image or by moving in a particular direction. Movement toward your left is negative, to the right is positive and smoke circling the incense stick reflects mingled fortunes or uncertain fates. When you’re done scrying the smoke and have put the incense out, keep the mixture of ash and water. This symbolizes the balance between fire and water. Carry this with you in a sealed container, breaking it open amid aggravating situations. Releasing the contents invites Juturna’s coolheadedness to keep anger reigned in.
To internalize Juturna’s protective, balancing energies, simply stop at any water fountain today for a refreshing drink of Her water. Whisper Her name just before the water meets your lips to invoke Her presence.”
(Patricia Telesco, “365 Goddess: a daily guide to the magic and inspiration of the goddess”.)
According to the Wikipedia, “Juturna was a Goddess of fountains, wells and springs. She was a sister of Turnus and supported him against Aeneas by giving him his sword after he dropped it in battle, as well as taking him away from the battle when it seemed he would get killed. She was also the mother of Fontus by Janus.
Jupiter turned Her into a water nymph and gave Her a sacred well in Lavinium, Latium, as well as another one near the temple to Vesta in the Forum Romanum. The pool next to the second well was called Lacus Juturnae. Juturna had an affair with Jupiter but the secret was betrayed by another nymph, Larunda, whom Jupiter struck with muteness as punishment.” 
Community-2.webtv.net, “Juturna: From Princess, to Water Nymph, to Goddess“.
Daly, Kathleen N. & Marian Rengel. Greek and Roman Mythology A to Z, “Juturna“.
Lindemans, Micha F. Encyclopedia Mythica, “Juturna“.
Sabrina. Goddess A Day, “Juturna“.