Skanda Purana

Ujjain is one of the very ancient cities in India. It has Mahakal Jyotirlinga, two Shaktipeethas and numerous other temples. Skanda purana describes

Four rivers

1. Kshipra, 
2. Navanadi, 
3. Neela ganga, 
4. Gandhavati, 

eighty four Jyotirlingas,
eight Bhairavas,
eleven Rudras,
twelve Adityas,
six Vinayakas,
twenty four Devis,
ten Vishnus present in Ujjaini.

http://indiatempletour.blogspot.in/2011/01/skanda-puranam-city-of-ujjain.html