Nickelodeon US is expected to announce today that Noggin and The N will become 24 hour standalone networks and will no longer share channel space.
Noggin is a daytime commercial-free pre-school network, while The N is a nighttime advertising-supported network for teenagers.
The split - which has apparently been considered for some time - will begin from December 31st.
"Having Noggin and The N as two separate channels alongside our Nicktoons network gives our core audiences of pre-schoolers, kids aged six to 11 and tweens/teens their own dedicated 24-hour services, as well as more places for us to cultivate and develop future hits," said Cyma Zarghami, president of Nickelodeon and MTVN Kids and Family Group.
"Making these highly valued channels separate and distinct will also provide us with the opportunity to explore serving audiences adjacent to these demos, and will provide demo-specific home bases for our vast programming library."
Noggin features a mix of original programming, plus Nick Jr hits like Dora the Explorer, Blue's Clues and The Backyardigans. Meanwhile, planned new programmes for The N include new seasons of Degrassi, Instant Star and Drake and Josh.